EP4243593A1 - Method for increasing the yield in plants by biostimulation, in particular in field crops - Google Patents
Method for increasing the yield in plants by biostimulation, in particular in field cropsInfo
- Publication number
- EP4243593A1 EP4243593A1 EP21823631.3A EP21823631A EP4243593A1 EP 4243593 A1 EP4243593 A1 EP 4243593A1 EP 21823631 A EP21823631 A EP 21823631A EP 4243593 A1 EP4243593 A1 EP 4243593A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- agent
- plants
- active agent
- yield
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 208000005135 methemoglobinemia Diseases 0.000 description 1
- 229930182817 methionine Natural products 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- COLNVLDHVKWLRT-UHFFFAOYSA-N phenylalanine Natural products OC(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-N 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 229930195732 phytohormone Natural products 0.000 description 1
- 230000003032 phytopathogenic effect Effects 0.000 description 1
- 239000000590 phytopharmaceutical Substances 0.000 description 1
- 230000008121 plant development Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 108060006613 prolamin Proteins 0.000 description 1
- 150000004672 propanoic acids Chemical class 0.000 description 1
- DQAKJEWZWDQURW-UHFFFAOYSA-N pyrrolidonecarboxylic acid Chemical class OC(=O)N1CCCC1=O DQAKJEWZWDQURW-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 235000017709 saponins Nutrition 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 230000007226 seed germination Effects 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
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- 239000004474 valine Substances 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
Definitions
- the present invention relates to the field of plant biostimulation of field crops in order to increase the efficiency of the use of nitrogen fertilizers, and thus to improve both the yield and the quality of harvested products, in particular cereal crops, rapeseed, and more particularly bread wheat or maize by way of the mobilization of nitrogen from the roots and from the straw to the grain.
- Chemical fertilizers, in particular nitrogen (N) are one of the main inputs for increasing yield, but also one of the most costly inputs in terms of economy and the environment. Many crops require high amounts of this element to maximize yield.
- US patent US4652294 discloses a process for increasing the yields and quality of annual crops growing in neutral or alkaline soil systems, which comprises the steps of:
- “Nitrogen booster for wheat Balsamo” allows a better management of nitrogen inputs over the entire production cycle. Nitrogen application is done at the precise moment when the plant needs it most to preserve the yield potential of your crops.
- Patent CN109601282 is also known relating to a method for drip irrigation of tomatoes as well as patent application WO2019166558 relating to new nitrification inhibitors of formula (I), which are pyrazole propargyl ether compounds. This document also relates to the use of compounds of formula (I) as nitrification inhibitors, that is to say to reduce nitrification, as well as agrochemical mixtures and compositions comprising the nitrification inhibitors of formula (I).
- the invention relates according to its in the most general sense, a process for increasing the productivity of plants by supplying a solution comprising an active agent, characterized in that the said solution is a sprayable liquid solution containing no mineral nitrogenous agent, obtained by diluting the said active agent consisting of: a) a biostimulating agent b) a foliar penetration agent and in that the application is carried out by spraying said liquid solution on the plants within a limited period after the main BBCH stage 2 corresponding to vegetative development and before the main BBCH stage 9 corresponding to the start of senescence without nitrogen fertilizer during the period between these two BBCH stages.
- a solution comprising an active agent
- the said solution is a sprayable liquid solution containing no mineral nitrogenous agent, obtained by diluting the said active agent consisting of: a) a biostimulating agent b) a foliar penetration agent
- the application is carried out by spraying said liquid solution on the plants within a limited period after the main BBCH stage 2 corresponding to vegetative development and
- said active agent consists of or comprises Glutacetin®.
- said liquid solution is sprayed at a rate of 0.5 to 5 kg of active agent per Hectare.
- said active agent is prepared in the form of a premix by diluting 0.5 to 5 kilograms of dry active agent in 1 to 10 liters of water.
- This method of preparation facilitates use by the farmer, by allowing the pouring into a tank from a can, up to a liquid premix containing 0.5 to 5 kg of active ingredient in a tank of 50 to 200 liters.
- the invention also relates to an active agent for improving the yield of plants for the implementation of the abovementioned method, characterized in that it consists of: a) a biostimulation agent b) a foliar penetration agent and in that it is recommended for application without nitrogen supply, by spraying on plants, in particular cereals, in a limited period after the main BBCH stage 2 corresponding to vegetative development and before the main BBCH stage 9 corresponding to the start of senescence and preferably at stage BBCH 2 to BBCH 7.
- the active agent is prepared in the form of a liquid premix by diluting 0.5 to 5 kilograms of said in 1 to 10 liters of water without adding mineral nitrogen agent.
- said stimulating agent consists of glutamic acid and/or a glutamic acid lactam.
- said stimulating agent contains molybdenum.
- said active agent also contains a protective agent, for example a phytopathogenic agent.
- the object of the invention is to propose a solution making it possible to obtain high yields for field crops by reducing or eliminating nitrogen inputs, by an effective method making it possible to activate the nitrogen metabolism, in particular of soft wheat. , rather than increasing the doses of nitrogen fertilizer.
- the urea nitrogen is assimilated mainly by the roots in very small quantities.
- soil enzymes hydrolyze urea nitrogen into ammonium, a process that can last between a day and a week, depending on the temperature and humidity of the soil.
- the method according to the invention consists in increasing the metabolism of the plant to improve its ability to absorb and transport nitrate by supplying a foliar agent with of biostimulation.
- Glutacetin® adjuvant marketed under the BALSAMO brand.
- the sprayable solution is a solution comprising two active agents: a biostimulating agent a leaf penetration agent
- the penetrating agent in the aerial part of the plants can be a wetting agent, surfactant also called “surfactant”, or penetrant, with or without a component with a phytoeffector role such as: mineral acids and their derivatives, polymers soluble such as alkylarylpolyglycol ethers, alkylphenols, carbomethylcellulose, polyamides, ethylene derivatives regardless of their degree of oxidation or ethoxylation and polymerization, glycol derivatives.
- surfactant also called "surfactant”
- penetrant with or without a component with a phytoeffector role such as: mineral acids and their derivatives, polymers soluble such as alkylarylpolyglycol ethers, alkylphenols, carbomethylcellulose, polyamides, ethylene derivatives regardless of their degree of oxidation or ethoxylation and polymerization, glycol derivatives.
- They may also be derivatives of soaps and saponins, derivatives of seaweed, derivatives of soya, derivatives of pine or other plants, or even mineral or organic oils, methylated or not, polyethylated or not, paraffinic or not, terpenes, ketones such as methyl ethyl ketone, amines such as alkarylamines, amides, thiols, alcohols such as isopropanol, or even organic acids (humic acid, propionic acid, pyrrolidone carboxylic acid, butiric acid , citric acid, propionic acid, acetic acid, etc.) and their derivatives (sulfonated, esterified, salts, whatever their degree of hydration, etc.), or other usual substances in the field of formulation phytosanitary including the anionic, cationic and non-ionic, hydrophobic or hydrophilic forms of these substances or their derivatives.
- penetrating agents ensure a better distribution on the foliage and/or promote the crossing of the stomatal or extra stomatal cuticular barrier, for example: by a partial solubilization of the latter, and/or by a moistening of the cuticular medium thus improving its fluidity, and/or by a reduction in the hydrophobic character of the cuticle, and/or by a modification of the polarities of certain components of this barrier and/or of the spray mixture.
- penetrating agent those chosen from the group comprising: algae derivatives, terpenes, alkylarylpolyglycol ethers, methylated or polymethylated oils, citric acids, pyrrolidone carboxylic acids, propionic acids and their derivatives, or a mixture thereof.
- the biostimulation agent consists of a nutrient, an inorganic or organic chemical complex, a micro-organism, influencing the activity of nitrate reductase enzymes and/or influencing the biochemical nitrogen assimilation chain. .
- mineral elements such as calcium, sulfur, potassium, etc.
- trace elements such as molybdenum, magnesium, copper, manganese, iron, zinc, boron, chlorine, silicon, sodium, cobalt, iodine, selenium, etc...
- mineral acids such as sulfuric, nitric, etc...
- organic acids such as lactic, acetic, ketone, citric, malic, glycolic, tartaric, aspartic, glutamic, etc...
- amino acids such as tryptophan, lysine, methionine, l alanine, valine, leucine, tyrosine, phenylalanine, glutamine, proline, glycine, serine, prolamin, etc.
- enzymes such as nitrate reductase, aspartate kinase, glutamine synthetase, etc...
- metabolizing agents those selected from the group comprising: calcium, magnesium, molybdenum, betaines, acetic, citric, glycolic, glutamic, aspartic acids, proline, and their derivatives, or a mixture of these.
- the metabolizing agent and the penetrating agent are a single and unique agent associated with the protective agent in the composition of the invention.
- a cream of seaweed or other plants acids such as pyrrolidone carboxylic acid, citric acid, acetic acid, amino acids, metabolites natural or synthetic, etc.
- the solution may comprise various formulating agents, additives or vehicles generally used in the field of fertilizers or phytosanitary specialties, such as glycol and its derivatives, inert supports, diluents, solvents, binders, complexing agents, preservatives , anti-evaporants, anti-foaming agents, colorants, acid or alkaline buffers, weighting agents, stabilizing agents, protective agents such as agar, gelatin, gum, mucilage, pectin materials, various starches, glucose, lactose, sucrose, maltose, humic acids and derivatives, silica, colloidal amines, algins and alginates, polyethylene glycol including the molecules known by the English term "safener".
- the invention envisages all molecules intended to contribute to detoxification by the plant of active materials, in particular of the herbicide type.
- the first fertilization was applied at tillering (BBCH 21, 61 and 100 kgN ha -1 , respectively), the second at bolting (BBCH 31, 31 and 50 kgN ha -1 , respectively) and the rest at the flag leaf stage ( BBCH 39.60 kgN ha 1 at both sites).
- the new nitrogen requirement indicators ("bq" coefficient) to cultivate each variety of wheat with a double objective of optimal yield and grain protein content in line with market requirements were followed.
- the Glutacetin® formulation was sprayed on the same day as the last application of N (BBCH 39) to maximize N uptake in plants. 5 L ha -1 of Glutacetin® were mixed with water for spraying. The number of ears per square meter was counted on each plot of the two sites then the grains were collected using a harvester.
- the improvement in yield made it possible to increase the EUA by 4.2 and 2.2 kg kg -1 in Seine-Maritime and in Calvados, respectively, i.e. an average improvement significantly greater than the control (p ⁇ 0.05) 4.6% even though the site effect is very important for this parameter (p ⁇ 0.01).
- Glutacetin® therefore makes it possible to significantly increase the yield and the EUA when it is applied alone in foliar form at the last leaf spread stage at a rate of 5 L ha ⁇ 1 .
Abstract
The invention describes a method for increasing the productivity of plants by providing a solution comprising an active agent, characterised in that the solution is a sprayable liquid solution which does not contain a mineral nitrogen agent and which is obtained by diluting the active agent, which consists of: a) a biostimulating agent and b) a foliar penetration agent, and in that the application is carried out by spraying the liquid solution, free of nitrogen fertiliser, onto the plants for a limited period after the principal BBCH growth stage 2, which corresponds to crop development, and before the principal BBCH growth stage 9, which corresponds to the beginning of senescence, during the period between said two BBCH growth stages.
Description
PROCEDE D'AUGMENTATION DU RENDEMENT DE VEGETAUX PAR BIOSTIMULATION, METHOD FOR INCREASING THE YIELD OF PLANTS BY BIOSTIMULATION,
NOTAMMENT DE GRANDES CULTURES PARTICULARLY FIELD CROPS
Domaine de l'invention Field of the invention
[0001] La présente invention concerne le domaine de la biostimulation végétale des grandes cultures afin d'augmenter l'efficacité de l'utilisation des engrais azotés, et ainsi d'améliorer à la fois le rendement et la qualité des produits de récolte, notamment les cultures céréalières, le colza, et plus particulièrement le blé panifiable ou du maïs par voie de la mobilisation de l'azote des racines et de la paille vers le grain. The present invention relates to the field of plant biostimulation of field crops in order to increase the efficiency of the use of nitrogen fertilizers, and thus to improve both the yield and the quality of harvested products, in particular cereal crops, rapeseed, and more particularly bread wheat or maize by way of the mobilization of nitrogen from the roots and from the straw to the grain.
[0002] L'augmentation des rendements est un enjeu majeur depuis plusieurs décennies pour les programmes de recherche (sélection variétale et pratiques agronomiques notamment). Ainsi, depuis la fin de la seconde guerre mondiale, d'énormes progrès ont été réalisés sur la génétique, l'agronomie, la mécanisation et l'utilisation d'intrants tels que les fertilisants et les produits phytosanitaires. L'intensification des modes de production a permis d'augmenter les rendements de manière remarquable en France passant d'environ 20 quinta ux/hectare (q/ha) en 1945 à 70 q/ha durant les années 1990 pour le blé. Cette période correspond à la « révolution verte » qui a permis à la France et à l'Europe de devenir autosuffisante. Les rendements des grandes cultures semblent désormais se stabiliser même si les recherches visent toujours à les déplafonner. [0002] Increasing yields has been a major challenge for several decades for research programs (particularly variety selection and agronomic practices). Thus, since the end of the Second World War, enormous progress has been made in genetics, agronomy, mechanization and the use of inputs such as fertilizers and phytosanitary products. The intensification of production methods has made it possible to increase yields remarkably in France, going from about 20 quinta ux/hectare (q/ha) in 1945 to 70 q/ha during the 1990s for wheat. This period corresponds to the “green revolution” which enabled France and Europe to become self-sufficient. Yields of field crops now seem to be stabilizing even if research is still aimed at removing the ceiling.
[0003] En plus de la stagnation des rendements du blé tendre, la concentration en protéines des grains tend à diminuer depuis la « révolution verte ». En effet, il existe une forte corrélation négative entre le rendement et la teneur en protéines des blés. Ainsi, les forts rendements obtenus au cours du 20ème siècle ont eu pour conséquence une diminution de la qualité des grains récoltés. Or, la concentration en protéines des grains est un critère qualitatif majeur du blé tendre du fait de sa forte influence sur les caractéristiques boulangères de la farine. En outre, la composition du grain en protéines notamment en protéines de réserve (molécules riches en azote et en soufre) qui sont responsables des propriétés rhéologiques de la farine, influence fortement la qualité d'utilisation du grain. [0003] In addition to the stagnation of soft wheat yields, the protein concentration of grains has tended to decrease since the “green revolution”. Indeed, there is a strong negative correlation between the yield and the protein content of wheat. Thus, the high yields obtained during the 20th century resulted in a decrease in the quality of the grains harvested. However, the grain protein concentration is a major qualitative criterion of soft wheat because of its strong influence on the baking characteristics of the flour. In addition, the composition of the grain in proteins, in particular in reserve proteins (molecules rich in nitrogen and sulfur) which are responsible for the rheological properties of the flour, strongly influences the quality of use of the grain.
[0004] La fertilisation azotée joue un rôle essentiel sur la croissance des végétaux et le rendement des cultures. Elle contribue à augmenter la croissance végétale ainsi que la production agricole, tout en ayant un impact sur la qualité des produits récoltés.
[0005] Les engrais chimiques, en particulier l'azote (N), sont l'un des principaux intrants pour augmenter le rendement, mais aussi l'un des intrants les plus coûteux en termes d'économie et d'environnement. De nombreuses cultures nécessitent des quantités élevées de cet élément pour maximiser le rendement. Nitrogen fertilization plays an essential role in plant growth and crop yield. It helps to increase plant growth and agricultural production, while having an impact on the quality of harvested products. [0005] Chemical fertilizers, in particular nitrogen (N), are one of the main inputs for increasing yield, but also one of the most costly inputs in terms of economy and the environment. Many crops require high amounts of this element to maximize yield.
[0006] Néanmoins, l'utilisation des engrais azotés par les plantes peut être considérée comme relativement inefficace au vu des quantités apportées. Généralement, la plante absorbe seulement 50% de l'azote appliqué. La cause principale de cette faible efficacité d'utilisation de l'azote est liée aux pertes importantes d'azote ammoniacal par volatilisation et/ou d'azote nitrique par lixiviation lors de précipitations élevées. Les conséquences liées à ces pertes peuvent avoir un impact à deux niveaux : tout d'abord économique puisqu'une faible valorisation constitue une perte financière non négligeable pour l'exploitant agricole et enfin environnemental, avec des impacts néfastes sur l'environnement direct (émission de gaz azotés contribuant à augmenter l'effet de serre, pollution des aquifères) ou indirect (coût énergétique de fabrication des engrais). [0006] Nevertheless, the use of nitrogenous fertilizers by the plants can be considered relatively ineffective in view of the quantities provided. Generally, the plant absorbs only 50% of the nitrogen applied. The main cause of this low nitrogen use efficiency is linked to significant losses of ammoniacal nitrogen by volatilization and/or nitrate nitrogen by leaching during high rainfall. The consequences linked to these losses can have an impact at two levels: firstly economic since a low valuation constitutes a not insignificant financial loss for the farmer and finally environmental, with harmful impacts on the direct environment (emission nitrogen gases contributing to increase the greenhouse effect, pollution of aquifers) or indirect (energy cost of manufacturing fertilizers).
[0007] Dans ce contexte, l'optimisation de la nutrition azotée des grandes cultures tel que le blé est essentielle afin de déplafonner les rendements et d'améliorer la qualité des grains tout en réduisant l'impact des fertilisants sur l'environnement. L'une des voies possibles est l'ajout d'additifs aux engrais azotés qui permettait d'apporter la bonne forme d'azote, à la bonne dose, au bon moment et au bon endroit. Une telle solution a été proposée dans le brevet[0007] In this context, optimizing the nitrogen nutrition of field crops such as wheat is essential in order to remove the ceiling on yields and improve grain quality while reducing the impact of fertilizers on the environment. One of the possible ways is the addition of additives to nitrogen fertilizers which made it possible to provide the right form of nitrogen, at the right rate, at the right time and in the right place. Such a solution has been proposed in the patent
EP0784040B1 de la demanderesse. Applicant's EP0784040B1.
[0008] Parallèlement, cette voie est de plus en plus contestée car la fertilisation azotée est impliquée dans de nombreux risques environnementaux et sanitaires. Les principaux impacts environnementaux de l'azote résident dans la contamination des ressources en eaux de surface et souterraines et les émissions de gaz à effet de serre. Sur la santé humaine, les effets dépendent de l'accumulation de nitrate dans les tissus végétaux ; lorsque le nitrate est réduit en nitrite dans le corps humain, il peut provoquer une méthémoglobinémie, qui est dangereuse pour les enfants. Le nitrite peut également réagir avec plusieurs composés chimiques (amines et amides), produisant des composés N-nitreux, connus comme probablement cancérigènes pour l'homme. [0008] At the same time, this route is increasingly contested because nitrogen fertilization is involved in numerous environmental and health risks. The main environmental impacts of nitrogen are contamination of surface and ground water resources and greenhouse gas emissions. On human health, the effects depend on the accumulation of nitrate in plant tissues; when nitrate is reduced to nitrite in the human body, it can cause methemoglobinemia, which is dangerous for children. Nitrite can also react with several chemical compounds (amines and amides), producing N-nitrous compounds, known to be probably carcinogenic to humans.
[0009] Une des voies nouvelles explorée consiste à augmenter la capacité de la plante à assimiler l'azote en agissant directement sur le métabolisme de la plante.
Etat de la technique [0009] One of the new avenues explored consists in increasing the capacity of the plant to assimilate nitrogen by acting directly on the metabolism of the plant. State of the art
[0010] On connaît dans l'état de la technique le brevet américain US4652294 un procédé pour augmenter les rendements et la qualité des cultures annuelles poussant dans des systèmes de sol neutres ou alcalins, qui comprend les étapes consistant à : [0010] In the state of the art, US patent US4652294 discloses a process for increasing the yields and quality of annual crops growing in neutral or alkaline soil systems, which comprises the steps of:
(a) appliquer un engrais éthylénique réduisant le stress comprenant des cations divalents métalliques non mobiles dans le sol et un activateur d'absorption foliaire auxdites cultures annuelles au cours d'une première phase de croissance de la culture caractérisée par la germination des graines ou l'établissement des plantules, et (a) applying a stress reducing ethylenic fertilizer comprising non-mobile divalent metal cations in the soil and a foliar uptake enhancer to said annual crops during an early crop growth phase characterized by seed germination or l seedling establishment, and
(b) appliquer un engrais améliorant la translocation photosynthétique auxdites cultures annuelles pendant une troisième phase de croissance des cultures caractérisée par la reproduction ou la fructification. (b) applying a photosynthetic translocation enhancing fertilizer to said annual crops during a third phase of crop growth characterized by reproduction or fruiting.
Cette solution n'est pas satisfaisante car elle propose l'emploi d'engrais azotés, par application sur le sol, ce qui est réduit la proportion absorbée par la plante et augmente la pollution des sols. This solution is not satisfactory because it proposes the use of nitrogen fertilizers, by application to the soil, which reduces the proportion absorbed by the plant and increases soil pollution.
[0011] On connaît aussi la publication https://www.viavegetale.com/en/products/balsamo/[0011] We also know the publication https://www.viavegetale.com/en/products/balsamo/
« Nitrogen booster for wheat Balsamo allows a better management of nitrogen inputs over the entire production cycle. Nitrogen application is done at the precise moment when the plant needs it most to preserve the yield potential of your crops. “Nitrogen booster for wheat Balsamo allows a better management of nitrogen inputs over the entire production cycle. Nitrogen application is done at the precise moment when the plant needs it most to preserve the yield potential of your crops.
Its active ingredient is unique and allows nitrogen to be better uptaken and better transformed: nitrogen works better inside the plant. » Its active ingredient is unique and allows nitrogen to be better uptaken and better transformed: nitrogen works better inside the plant. »
[0012] On connaît encore le brevet CN109601282 concernant un procédé d'irrigation goutte à goutte de tomates ainsi que la demande de brevet WO2019166558 concerne de nouveaux inhibiteurs de nitrification de formule (I), qui sont des composés pyrazole propargyl éther. Ce document concerne aussi l'utilisation de composés de formule (I) comme inhibiteurs de nitrification, c'est-à-dire pour réduire la nitrification, ainsi que des mélanges et compositions agrochimiques comprenant les inhibiteurs de nitrification de formule (I). [0012] Patent CN109601282 is also known relating to a method for drip irrigation of tomatoes as well as patent application WO2019166558 relating to new nitrification inhibitors of formula (I), which are pyrazole propargyl ether compounds. This document also relates to the use of compounds of formula (I) as nitrification inhibitors, that is to say to reduce nitrification, as well as agrochemical mixtures and compositions comprising the nitrification inhibitors of formula (I).
Solution apportée par l'invention Solution provided by the invention
Afin d'améliorer le rendement des végétaux, et notamment des plantes céréalières par une amélioration de la capacité métabolique de la plante, l'invention concerne selon son
acception la plus générale un procédé d'augmentation de la productivité de végétaux par apport d'une solution comportant un agent actif caractérisé en ce que ladite solution est une solution liquide pulvérisable ne contenant pas d'agent azoté minéral, obtenue par dilution dudit agent actif constitué par : a) un agent de biostimulation b) un agent de pénétration foliaire et en ce que l'application est réalisée par pulvérisation de ladite solution liquide sur les végétaux dans une période limitée après le stade BBCH principal 2 correspondant au développement végétatif et avant le stade BBCH principal 9 correspondant au début de la sénescence sans fertilisant azoté pendant la période comprise entre ces deux stades BBCH. In order to improve the yield of plants, and in particular of cereal plants by improving the metabolic capacity of the plant, the invention relates according to its in the most general sense, a process for increasing the productivity of plants by supplying a solution comprising an active agent, characterized in that the said solution is a sprayable liquid solution containing no mineral nitrogenous agent, obtained by diluting the said active agent consisting of: a) a biostimulating agent b) a foliar penetration agent and in that the application is carried out by spraying said liquid solution on the plants within a limited period after the main BBCH stage 2 corresponding to vegetative development and before the main BBCH stage 9 corresponding to the start of senescence without nitrogen fertilizer during the period between these two BBCH stages.
[0013] De manière surprenante, l'application à un stade particulier du développement de la plante, augmente significativement la productivité, sans ajout d'azote, contrairement aux solutions de l'art antérieur où l'utilisation d'agent de biostimulation était combinée avec un apport azoté. [0013] Surprisingly, the application at a particular stage of plant development significantly increases productivity, without adding nitrogen, unlike the solutions of the prior art where the use of biostimulation agent was combined with a nitrogen supply.
[0014] Avantageusement, ledit agent actif est constitué ou comprend de la Glutacétine®. [0014] Advantageously, said active agent consists of or comprises Glutacetin®.
[0015] De préférence, ladite solution liquide est pulvérisée à raison de 0,5 à 5 kg d'agent actif par Hectare. Preferably, said liquid solution is sprayed at a rate of 0.5 to 5 kg of active agent per Hectare.
[0016] Avantageusement, ledit agent actif est préparé sous forme de prémix par dilution de 0,5 à 5 kilogrammes d'agent actif sec dans 1 à 10 litres d'eau. Ce mode de préparation facilite l'utilisation par l'agriculteur, en permettant le versement dans une citerne à partir d'un bidon, à hauteur d'un prémix liquide contenant 0,5 à 5 kg de principe actif dans une citerne de 50 à 200 litres. Advantageously, said active agent is prepared in the form of a premix by diluting 0.5 to 5 kilograms of dry active agent in 1 to 10 liters of water. This method of preparation facilitates use by the farmer, by allowing the pouring into a tank from a can, up to a liquid premix containing 0.5 to 5 kg of active ingredient in a tank of 50 to 200 liters.
[0017] L'invention concerne aussi un agent actif d'amélioration du rendement de végétaux pour la mise en œuvre du procédé susvisée caractérisée en ce qu'il est constitué par : a) un agent de biostimulation b) un agent de pénétration foliaire et en ce qu'elle est préconisée pour une application sans apport azoté, par pulvérisation sur les végétaux, notamment les céréales, dans une période limitée après le stade BBCH principal 2 correspondant au développement végétatif et avant le stade BBCH principal 9 correspondant au début de la sénescence et de préférence au stade BBCH 2 à BBCH 7. The invention also relates to an active agent for improving the yield of plants for the implementation of the abovementioned method, characterized in that it consists of: a) a biostimulation agent b) a foliar penetration agent and in that it is recommended for application without nitrogen supply, by spraying on plants, in particular cereals, in a limited period after the main BBCH stage 2 corresponding to vegetative development and before the main BBCH stage 9 corresponding to the start of senescence and preferably at stage BBCH 2 to BBCH 7.
[0018] Avantageusement, l'agent actif est préparé sous forme de prémix liquide par dilution de 0,5 à 5 kilogrammes dudit dans 1 à 10 litres d'eau sans ajout d'agent azoté minéral.
De préférence ledit agent de stimulation est constitué par de l'acide glutamique et/ou d'un lactame d'acide glutamique. Advantageously, the active agent is prepared in the form of a liquid premix by diluting 0.5 to 5 kilograms of said in 1 to 10 liters of water without adding mineral nitrogen agent. Preferably, said stimulating agent consists of glutamic acid and/or a glutamic acid lactam.
[0019] Avantageusement, ledit agent de stimulation contient du molybdène. [0019] Advantageously, said stimulating agent contains molybdenum.
[0020] Selon une variante, ledit agent actif contient en outre un agent de protection, par exemple un agent phytopathogène. According to a variant, said active agent also contains a protective agent, for example a phytopathogenic agent.
Description détaillée d'exemples non limitatifs de l'invention Detailed description of non-limiting examples of the invention
[0021] La présente invention sera mieux comprise à la lecture de la description qui suit, se référant à des exemples non limitatifs de mise en œuvre. The present invention will be better understood on reading the following description, referring to non-limiting examples of implementation.
Contexte de l'invention Background of the invention
[0022] Le but de l'invention est de proposer une solution permettant d'obtenir des rendements élevés pour les grandes cultures en réduisant ou un supprimant les apports azotés, par une méthode efficace permettant d'activer le métabolisme azoté, notamment du blé tendre, plutôt que d'augmenter les doses d'engrais azoté. The object of the invention is to propose a solution making it possible to obtain high yields for field crops by reducing or eliminating nitrogen inputs, by an effective method making it possible to activate the nitrogen metabolism, in particular of soft wheat. , rather than increasing the doses of nitrogen fertilizer.
[0023] L'azote uréique est assimilé principalement par les racines en très petites quantités. Pour être assimilé les enzymes du sol hydrolysent l'azote uréique en ammonium, processus qui peut durer entre une journée et une semaine, en fonction de la température et l'humidité du sol. The urea nitrogen is assimilated mainly by the roots in very small quantities. To be assimilated, soil enzymes hydrolyze urea nitrogen into ammonium, a process that can last between a day and a week, depending on the temperature and humidity of the soil.
[0024] Pour éviter de faire pénétrer des ajouts azotés par les feuilles, le procédé selon l'invention consiste à augmenter le métabolisme de la plante pour améliorer sa capacité à absorber et transporter le nitrate par un apport par la voie foliaire d'un agent de biostimulation. [0024] To prevent nitrogen additions from penetrating through the leaves, the method according to the invention consists in increasing the metabolism of the plant to improve its ability to absorb and transport nitrate by supplying a foliar agent with of biostimulation.
Principe actif Active ingredient
[0025] Un exemple de principe actif est la Glutacétine® adjuvant commercialisé sous la marque BALSAMO. [0025] An example of an active ingredient is Glutacetin® adjuvant marketed under the BALSAMO brand.
[0026] De façon plus générale, la solution pulvérisable est une solution comportant deux agents actifs :
un agent de biostimulation un agent de pénétration foliaire More generally, the sprayable solution is a solution comprising two active agents: a biostimulating agent a leaf penetration agent
[0027] L'agent de pénétration dans la partie aérienne des plantes peut être un agent mouillant, tensio-actif aussi désigné "surfactant", ou pénétrant, avec ou sans composante à rôle phytoeffecteur comme : les acides minéraux et leurs dérivés, des polymères solubles comme les éthers d'alkylarylpolyglycol, les alkylphenols, les carbomethylcellulose, les polyamides, les dérivés de l'éthylène quel que soit leur degré d'oxydation ou d'éthoxylation et de polymérisation, les dérivés du glycol. Il peut s'agir aussi de dérivés des savons et saponines, de dérivés d'algues, de dérivés du soja, de dérivés du pin ou d'autres végétaux, ou encore des huiles minérales ou organiques, méthylées ou non, polyéthylées ou non, paraffiniques ou non, des terpènes, des cétones comme la méthyléthylcétone, des amines comme les alkarylamines, des amides, des thiols, des alcools comme l'isopropanol, ou encore des acides organiques (acide humique, acide propionique, acide pyrrolidone carboxylique, acide butirique, acide citrique, acide propionique, acide acétique, etc...) et leurs dérivés (sulfonés, esterifiés, sels, quel que soit leur degré d'hydratation, etc...), ou autres substances usuelles dans le domaine de la formulation phytosanitaire incluant les formes anioniques, cationiques et non ioniques, hydrophobes ou hydrophiles de ces substances ou de leurs dérivés. Ces agents de pénétration assurent une meilleure répartition sur le feuillage et/ou favorisent le franchissement de la barrière cuticulaire stomatique ou extra stomatique, par exemple : par une solubilisation partielle de celle-ci, et/ou par une humectation du milieu cuticulaire améliorant ainsi sa fluidité, et/ou par une diminution du caractère hydrophobe de la cuticule, et/ou par une modification des polarités de certains composants de cette barrière et/ou de la bouillie de pulvérisation. The penetrating agent in the aerial part of the plants can be a wetting agent, surfactant also called "surfactant", or penetrant, with or without a component with a phytoeffector role such as: mineral acids and their derivatives, polymers soluble such as alkylarylpolyglycol ethers, alkylphenols, carbomethylcellulose, polyamides, ethylene derivatives regardless of their degree of oxidation or ethoxylation and polymerization, glycol derivatives. They may also be derivatives of soaps and saponins, derivatives of seaweed, derivatives of soya, derivatives of pine or other plants, or even mineral or organic oils, methylated or not, polyethylated or not, paraffinic or not, terpenes, ketones such as methyl ethyl ketone, amines such as alkarylamines, amides, thiols, alcohols such as isopropanol, or even organic acids (humic acid, propionic acid, pyrrolidone carboxylic acid, butiric acid , citric acid, propionic acid, acetic acid, etc.) and their derivatives (sulfonated, esterified, salts, whatever their degree of hydration, etc.), or other usual substances in the field of formulation phytosanitary including the anionic, cationic and non-ionic, hydrophobic or hydrophilic forms of these substances or their derivatives. These penetrating agents ensure a better distribution on the foliage and/or promote the crossing of the stomatal or extra stomatal cuticular barrier, for example: by a partial solubilization of the latter, and/or by a moistening of the cuticular medium thus improving its fluidity, and/or by a reduction in the hydrophobic character of the cuticle, and/or by a modification of the polarities of certain components of this barrier and/or of the spray mixture.
[0028] A titre d'agent de pénétration, on préfère ceux choisi dans le groupe comprenant : les dérivés des algues, les terpènes, des éthers d'alkylarylpolyglycol, les huiles méthylées ou polyméthylées, les acides citrique, pyrrolidone carboxylique, propionique et leurs dérivés, ou un mélange de ceux-ci. As a penetrating agent, those chosen from the group comprising: algae derivatives, terpenes, alkylarylpolyglycol ethers, methylated or polymethylated oils, citric acids, pyrrolidone carboxylic acids, propionic acids and their derivatives, or a mixture thereof.
[0029] L'agent de biostimulation est constitué par un élément nutritif, un complexe chimique minéral ou organique, un micro-organisme, influençant l'activité des enzymes nitrates réductases et/ou influant sur la chaîne biochimique d'assimilation de l'azote.
[0030] A titre d'exemples non limitatifs de tels agents de métabolisation, on peut citer : des éléments minéraux, comme le calcium, le soufre, le potassium, etc ..., des oligoéléments, comme le molybdène, le magnésium, le cuivre, le manganèse, le fer, le zinc, le bore, le chlore, le silicium, le sodium, le cobalt, l'iode, le sélénium, etc ..., des acides minéraux, comme l'acide sulfurique, nitrique, etc ..., des acides organiques, comme les acides lactique, acétique, cétoniques, citrique, malique, glycolique, tartrique, aspartique, glutamique, etc ..., des acides aminés, comme le tryptophane, la lysine, la méthionine, l'alanine, la valine, la leucine, la tyrosine, la phénylalanine, la glutamine, la proline, la glycine, la serine, la prolamine, etc ..., les dérivés fonctionnels des acides précédents, des enzymes, comme une nitrate réductase, aspartate kinase, glutamine synthétase, etc ... des micro-organismes, comme des bactéries, des molécules organiques complexes telles que la caséine, les bétaïnes, des phytohormones, etc ... [0029] The biostimulation agent consists of a nutrient, an inorganic or organic chemical complex, a micro-organism, influencing the activity of nitrate reductase enzymes and/or influencing the biochemical nitrogen assimilation chain. . [0030] By way of non-limiting examples of such metabolizing agents, mention may be made of: mineral elements, such as calcium, sulfur, potassium, etc., trace elements, such as molybdenum, magnesium, copper, manganese, iron, zinc, boron, chlorine, silicon, sodium, cobalt, iodine, selenium, etc..., mineral acids, such as sulfuric, nitric, etc..., organic acids, such as lactic, acetic, ketone, citric, malic, glycolic, tartaric, aspartic, glutamic, etc..., amino acids, such as tryptophan, lysine, methionine, l alanine, valine, leucine, tyrosine, phenylalanine, glutamine, proline, glycine, serine, prolamin, etc., functional derivatives of the above acids, enzymes, such as nitrate reductase, aspartate kinase, glutamine synthetase, etc... microorganisms, such as bacteria, complex organic molecules such as casein , betaines, phytohormones, etc.
[0031] Parmi ces agents de métabolisation, on préfère ceux choisis dans le groupe comprenant : le calcium, le magnésium, le molybdène, les bétaïnes, les acides acétique, citrique, glycolique, glutamique, aspartique, la proline, et leurs dérivés, ou un mélange de ceux-ci. Among these metabolizing agents, those selected from the group comprising: calcium, magnesium, molybdenum, betaines, acetic, citric, glycolic, glutamic, aspartic acids, proline, and their derivatives, or a mixture of these.
[0032] Selon une forme de réalisation toute particulière et préférée de l'invention, l'agent de métabolisation et l'agent de pénétration sont un seul et unique agent associé à l'agent de protection dans la composition de l'invention. A titre d'exemple d'une telle formulation on peut citer une crème d'algue ou d'autres végétaux, des acides tels que l'acide pyrrolidone carboxylique, l'acide citrique, l'acide acétique, les acides aminés, des métabolites naturels ou de synthèse, etc... According to a very particular and preferred embodiment of the invention, the metabolizing agent and the penetrating agent are a single and unique agent associated with the protective agent in the composition of the invention. By way of example of such a formulation, mention may be made of a cream of seaweed or other plants, acids such as pyrrolidone carboxylic acid, citric acid, acetic acid, amino acids, metabolites natural or synthetic, etc.
[0033] La solution peut comprendre divers agents de formulation, additifs ou véhicules généralement utilisés dans le domaine des engrais ou des spécialités phytosanitaires, comme le glycol et ses dérivés, des supports inertes, des diluants, des dissolvants, des liants des complexants, conservateurs, anti-évaporants, des anti-moussants, des colorants, des tampons acides ou alcalins, des alourdisseurs, des agents de stabilisation, des agents de protection tels que gélose, gélatine, gomme, mucilage, matières pectiniques, empois divers,
glucose, lactose, saccharose, maltose, acides humiques et dérivés, silice, amines colloïdales, algines et alginates, polyéthylène-glycol incluant les molécules connues sous le terme anglais "safener". L'invention envisage toutes molécules destinées à contribuer à une détoxification par la plante de matières actives, notamment de type herbicide. The solution may comprise various formulating agents, additives or vehicles generally used in the field of fertilizers or phytosanitary specialties, such as glycol and its derivatives, inert supports, diluents, solvents, binders, complexing agents, preservatives , anti-evaporants, anti-foaming agents, colorants, acid or alkaline buffers, weighting agents, stabilizing agents, protective agents such as agar, gelatin, gum, mucilage, pectin materials, various starches, glucose, lactose, sucrose, maltose, humic acids and derivatives, silica, colloidal amines, algins and alginates, polyethylene glycol including the molecules known by the English term "safener". The invention envisages all molecules intended to contribute to detoxification by the plant of active materials, in particular of the herbicide type.
Dispositif expérimental Experimental apparatus
[0034] En 2018-2019, des essais ont été conduits sur différentes variétés de blé d'hiver (Triticum aestivum L, cv. Libravo et Sacremento) semées sur deux sites différents en Normandie, France (49.512660, 0.409829 ; Seine-Maritime, et 49.26491, -0.87763 ; Calvados, respectivement). La taille des parcelles était de 24 m2 (12 mx 2 m) et trois répétitions (parcelles) ont été utilisées par traitement sur chaque site. Les parcelles ont été randomisées en trois blocs principaux. Des applications systématiques de traitements phytopharmaceutiques ont été effectuées. Les conditions météorologiques (température moyenne et précipitations totales) étaient de 11,9 à 12,4°C et de 599 à 612 mm. Les cultures précédentes (lin en Seine-Maritime, betterave dans le Calvados) et les propriétés du sol étaient très différentes dans chaque site (limon profond et limon argileux, respectivement). [0034] In 2018-2019, trials were conducted on different varieties of winter wheat (Triticum aestivum L, cv. Libravo and Sacremento) sown at two different sites in Normandy, France (49.512660, 0.409829; Seine-Maritime, and 49.26491, -0.87763; Calvados, respectively). Plot size was 24 m 2 (12 mx 2 m) and three replicates (plots) were used per treatment at each site. The plots were randomized into three main blocks. Systematic applications of phytopharmaceutical treatments have been carried out. The meteorological conditions (average temperature and total precipitation) were 11.9 to 12.4°C and 599 to 612 mm. Previous crops (flax in Seine-Maritime, beet in Calvados) and soil properties were very different at each site (deep silt and clay silt, respectively).
[0035] Sur chaque site, toutes les parcelles ont été fertilisées avec 30 kg de S ha 1 au stade du tallage (BBCH 29). La fertilisation azotée visait à reproduire les pratiques agricoles et a été calculée selon la méthode (dite « Méthode du Bilan ») décrite par le comité français COMIFER. Cette méthode mesure la quantité de N minéral dans le sol en février pour estimer l'approvisionnement total en N du sol. Avec l'estimation des besoins totaux des plantes, la méthode permet d'appliquer une dose d'azote proche de la demande de la culture (152 et 210 kgN ha 1 dans le Calvados et la Seine-Maritime, respectivement). L'urée granulé à 46% a été utilisé dans ces expérimentations pour fertiliser le blé. La première fertilisation a été appliquée au tallage (BBCH 21, 61 et 100 kgN ha -1, respectivement), la seconde à montaison (BBCH 31, 31 et 50 kgN ha -1, respectivement) et le reste au stade dernière feuille étalée (BBCH 39, 60 kgN ha 1 sur les deux sites). Pour la dernière application d'azote, les nouveaux indicateurs d'exigence d'azote (coefficient "bq") pour cultiver chaque variété de blé avec un double objectif de rendement optimal et de teneur en protéines des grains en ligne avec les exigences du marché ont été suivis. Pour le traitement biostimulant, la formulation Glutacétine® a été pulvérisée le même jour que la dernière application de N (BBCH 39) pour
maximiser l'absorption d'N dans les plantes. 5 L ha -1 de Glutacétine® ont été mélangés avec de l'eau pour la pulvérisation. Le nombre d'épis par mètre carré a été compté sur chaque parcelle des deux sites puis les grains ont été collectés à l'aide d'une moissonneuse. On each site, all the plots were fertilized with 30 kg of S ha 1 at the tillering stage (BBCH 29). Nitrogen fertilization aimed to reproduce agricultural practices and was calculated according to the method (known as the "Bilan Method") described by the French committee COMIFER. This method measures the amount of mineral N in the soil in February to estimate the total soil N supply. With the estimation of the total needs of the plants, the method makes it possible to apply a dose of nitrogen close to the demand of the crop (152 and 210 kgN ha 1 in Calvados and Seine-Maritime, respectively). 46% granulated urea was used in these experiments to fertilize wheat. The first fertilization was applied at tillering (BBCH 21, 61 and 100 kgN ha -1 , respectively), the second at bolting (BBCH 31, 31 and 50 kgN ha -1 , respectively) and the rest at the flag leaf stage ( BBCH 39.60 kgN ha 1 at both sites). For the latest nitrogen application, the new nitrogen requirement indicators ("bq" coefficient) to cultivate each variety of wheat with a double objective of optimal yield and grain protein content in line with market requirements were followed. For the biostimulant treatment, the Glutacetin® formulation was sprayed on the same day as the last application of N (BBCH 39) to maximize N uptake in plants. 5 L ha -1 of Glutacetin® were mixed with water for spraying. The number of ears per square meter was counted on each plot of the two sites then the grains were collected using a harvester.
[0036] Après la récolte du blé d'hiver, le nombre de grains par épi a été mesuré, le rendement a ensuite été calculé avec une humidité standard (15%) et l'efficience d'utilisation de l'azote (EUA) selon Moll et al. (1982) en utilisant l'équation suivante : EUA (kg kg -1) = Rendement en grains (kg ha -1) / Apport d'azote (kg ha -1). [0036] After harvesting the winter wheat, the number of grains per ear was measured, the yield was then calculated with a standard humidity (15%) and the nitrogen use efficiency (EUA) according to Moll et al. (1982) using the following equation: EUA (kg kg -1 ) = Grain yield (kg ha -1 ) / Nitrogen supply (kg ha -1 ).
Résultats Results
[0037] L'application de Glutacétine® seule en foliaire a une dose de 5 L ha 1 a permis d'augmenter le rendement 9 quintaux ha 1 en Seine-Maritime et de 3.4 quintaux ha 1 dans le Calvados. L'analyse de la variance (ANOVA) révèle un effet significatif de la Glutacétine® sur le rendement (p < 0.05) avec une amélioration moyenne de 6.2 quintaux ha -1. Ceci est principalement dû à un effet du biostimulant sur le nombre de grains par épi qui est supérieur au témoin dans les deux situations expérimentales. En moyenne, la Glutacétine® augmente ce paramètre de 11.4%, ce qui est légèrement significatif par rapport au témoin (p < 0.06). The application of Glutacetin® alone in foliar form at a dose of 5 L ha 1 made it possible to increase the yield by 9 quintals ha 1 in Seine-Maritime and by 3.4 quintals ha 1 in Calvados. The analysis of variance (ANOVA) reveals a significant effect of Glutacetin® on yield (p < 0.05) with an average improvement of 6.2 quintals ha -1 . This is mainly due to an effect of the biostimulant on the number of grains per ear which is higher than the control in the two experimental situations. On average, Glutacetin® increases this parameter by 11.4%, which is slightly significant compared to the control (p < 0.06).
[0038] [Table 1]
[0038] [Table 1]
[0039] Enfin, l'amélioration du rendement a permis d'accroitre l'EUA de 4.2 et 2.2 kg kg -1 en Seine-Maritime et dans le Calvados, respectivement, soit une amélioration moyenne significativement supérieure au témoin (p < 0.05) de 4.6% alors même que l'effet site est très important pour ce paramètre (p < 0.01).
[0040] La Glutacétine® permet donc d'augmenter significativement le rendement et l'EUA lorsqu'elle est appliquée seule en foliaire au stade dernière feuille étalée à raison de 5 L ha -1.
Finally, the improvement in yield made it possible to increase the EUA by 4.2 and 2.2 kg kg -1 in Seine-Maritime and in Calvados, respectively, i.e. an average improvement significantly greater than the control (p < 0.05) 4.6% even though the site effect is very important for this parameter (p < 0.01). [0040] Glutacetin® therefore makes it possible to significantly increase the yield and the EUA when it is applied alone in foliar form at the last leaf spread stage at a rate of 5 L ha −1 .
Claims
1. Procédé d'augmentation de la productivité de végétaux par apport d'une solution comportant un agent actif caractérisé en ce que ladite solution est une solution liquide pulvérisable ne contenant pas d'agent azoté minéral, obtenue par dilution dudit agent actif constitué par : a) un agent de biostimulation b) un agent de pénétration foliaire et en ce que l'application est réalisée par pulvérisation de ladite solution liquide sur les végétaux dans une période limitée après le stade BBCH principal 2 correspondant au développement végétatif et avant le stade BBCH principal 9 correspondant au début de la sénescence sans fertilisant azoté pendant la période comprise entre ces deux stades BBCH. 1. Method for increasing the productivity of plants by supplying a solution comprising an active agent, characterized in that said solution is a sprayable liquid solution containing no mineral nitrogenous agent, obtained by diluting said active agent consisting of: a) a biostimulant b) a foliar penetration agent and in that the application is carried out by spraying said liquid solution on the plants within a limited period after the main BBCH stage 2 corresponding to vegetative development and before the BBCH stage main 9 corresponding to the beginning of senescence without nitrogen fertilizer during the period between these two BBCH stages.
2. Procédé d'augmentation de la productivité de végétaux selon la revendication 1 caractérisé en ce que ledit agent actif est de la Glutacétine®. 2. Method for increasing plant productivity according to claim 1, characterized in that said active agent is Glutacetin®.
3. Procédé d'augmentation de la productivité de végétaux selon la revendication 1 caractérisé en ce que ladite solution liquide est pulvérisée à raison de 0,5 à 5 kg d'agent actif par Hectare. 3. Method for increasing the productivity of plants according to claim 1 characterized in that said liquid solution is sprayed at a rate of 0.5 to 5 kg of active agent per Hectare.
4. Procédé d'augmentation de la productivité de végétaux selon la revendication 1 caractérisée en ce que ledit agent actif est préparé sous forme de prémix par dilution de 0,5 à 5 kilogrammes d'agent actif sec dans 1 à 10 litres d'eau. 4. Method for increasing the productivity of plants according to claim 1 characterized in that said active agent is prepared in the form of a premix by diluting 0.5 to 5 kilograms of dry active agent in 1 to 10 liters of water .
5. Agent actif d'amélioration du rendement de végétaux pour la mise en œuvre du procédé objet de la revendication 1 caractérisé en ce qu'il est constitué par : a) un agent de biostimulation b) un agent de pénétration foliaire et en ce qu'elle est préconisée pour une application sans apport azoté, par pulvérisation sur les végétaux, notamment les céréales, dans une période limitée après le stade BBCH principal 2 correspondant au développement végétatif et avant le stade BBCH principal 9 correspondant au début de la sénescence.
Agent actif d'amélioration du rendement de végétaux selon la revendication précédente caractérisée en ce qu'il est préparé sous forme liquide par dilution de 0,5 à 5 kilogrammes dudit dans 1 à 10 litres d'eau sans ajout d'agent azoté minéral. Agent actif d'amélioration du rendement de végétaux selon la revendication 5 ou 6 caractérisé en ce que ledit agent de stimulation est constitué par de l'acide glutamique et/ou d'un lactame d'acide glutamique. Agent actif d'amélioration du rendement de végétaux selon la revendication 5 ou 6 caractérisé en ce que ledit agent de stimulation contient du molybdène. Agent actif d'amélioration du rendement de végétaux selon la revendication 4 caractérisé en ce que ledit agent actif contient en outre un agent de protection.
5. Active agent for improving the yield of plants for the implementation of the method which is the subject of claim 1, characterized in that it consists of: a) a biostimulation agent b) a foliar penetration agent and in that It is recommended for application without nitrogen supply, by spraying on plants, in particular cereals, in a limited period after the main BBCH stage 2 corresponding to vegetative development and before the main BBCH stage 9 corresponding to the start of senescence. Active agent for improving the yield of plants according to the preceding claim, characterized in that it is prepared in liquid form by diluting 0.5 to 5 kilograms of the said in 1 to 10 liters of water without adding mineral nitrogenous agent. Active agent for improving the yield of plants according to Claim 5 or 6, characterized in that the said stimulating agent consists of glutamic acid and/or of a lactam of glutamic acid. Active plant yield improver according to claim 5 or 6 characterized in that said stimulating agent contains molybdenum. Active plant yield improver according to claim 4 characterized in that said active agent further contains a protective agent.
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FR2011604A FR3118395B1 (en) | 2020-11-12 | 2020-11-12 | Process for increasing the yield of plants by biostimulation, in particular field crops |
PCT/FR2021/052001 WO2022101587A1 (en) | 2020-11-12 | 2021-11-12 | Method for increasing the yield in plants by biostimulation, in particular in field crops |
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FR409829A (en) | 1909-11-30 | 1910-05-02 | Thaddious V Elliott | Charcoal charger for fireplaces |
US4652294A (en) * | 1985-05-31 | 1987-03-24 | Professional Agricultural Management, Inc. | Foliar fertilization method and compounds |
FR2743558B1 (en) | 1996-01-15 | 1998-04-10 | Couturier Stephane | NOVEL FERTILIZER COMPOSITION FOR INCREASING THE PROTEIN CONTENT OF PLANTS |
US6331505B1 (en) | 1998-10-29 | 2001-12-18 | Emerald Bioagriculture Corporation | Method for increasing plant productivity using glutamic acid and glycolic acid |
FR3033473B1 (en) | 2015-03-11 | 2017-04-28 | Bio3G | AGRICULTURAL COMPOSITION FOR STIMULATING PLANT NITROGEN METABOLISM COMPRISING LAMINARIA GENE ALGAE EXTRACT AND GLUTAMIC ACID, METHODS AND USES THEREOF |
EP3758491A1 (en) * | 2018-02-28 | 2021-01-06 | Basf Se | Use of pyrazole propargyl ethers as nitrification inhibitors |
CN109601282B (en) * | 2018-11-29 | 2020-12-18 | 河北省农林科学院农业资源环境研究所 | High-yield facility winter-spring stubble tomato drip irrigation fertilizer and water integrated control and management method |
-
2020
- 2020-11-12 FR FR2011604A patent/FR3118395B1/en active Active
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2021
- 2021-11-12 WO PCT/FR2021/052001 patent/WO2022101587A1/en unknown
- 2021-11-12 EP EP21823631.3A patent/EP4243593A1/en active Pending
Also Published As
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FR3118395B1 (en) | 2023-06-09 |
FR3118395A1 (en) | 2022-07-01 |
WO2022101587A1 (en) | 2022-05-19 |
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