EP3664610A2 - Utilisation d'un tensioactif non ionique dérivé de polyols en tant qu'agent stimulateur de la croissance végétale ou en tant qu'adjuvant - Google Patents
Utilisation d'un tensioactif non ionique dérivé de polyols en tant qu'agent stimulateur de la croissance végétale ou en tant qu'adjuvantInfo
- Publication number
- EP3664610A2 EP3664610A2 EP18762383.0A EP18762383A EP3664610A2 EP 3664610 A2 EP3664610 A2 EP 3664610A2 EP 18762383 A EP18762383 A EP 18762383A EP 3664610 A2 EP3664610 A2 EP 3664610A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nonionic surfactant
- polyols
- use according
- water
- surfactant derived
- 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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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
Definitions
- nonionic surfactant derived from polyols as a plant growth stimulating agent or as an adjuvant
- the invention relates to the use of at least one nonionic surfactant derived from polyols as an agent for stimulating plant growth, in particular with regard to germination and / or root growth (including the root architecture).
- the invention also relates to the use of at least one nonionic surfactant derived from polyols as an adjuvant for phytosanitary products.
- said polyol derivative is a sugar derivative.
- the present invention provides a solution to this problem through the use of at least one nonionic surfactant derived from polyols as a plant growth stimulating agent.
- plant growth stimulating agent means a compound which exerts a stimulating activity on the seeds and / or the roots of a plant.
- a biostimulant is also defined as: "A material that contains a substance (s) and / or micro-organism (s) whose function, when applied to plants or the rhizosphere, is to stimulate natural processes to improve / to promote nutrient absorption, nutrient efficiency, tolerance to abiotic stress, and crop quality, regardless of the nutrient content of the biostimulant. "(EBIC, 2014).
- biostimulant definitions encompass the stimulation of abiotic stress resistance properties.
- Biocontrol products also concern the protection of plants against stress biotic. However, these applications on biotic and / or abiotic stresses are outside the scope of the invention.
- the invention therefore relates to the use of at least one nonionic surfactant derived from polyols as a plant growth stimulating agent having an activity on the seeds and / or the roots of a plant.
- said polyol derivative is a sugar derivative.
- said nonionic surfactant derived from polyols stimulates or promotes germination and / or root growth and / or vertical rooting of a plant.
- seeds one or more seeds
- roots one or more root (s).
- promoting root growth is meant that said nonionic surfactant derived from polyols stimulates or promotes root elongation and / or rootlet formation.
- the application of at least one nonionic surfactant derived from polyols may allow a root elongation, coupled with a vertical anchoring of the roots.
- this root growth can favor the production of auxin (phytohormone involved in the processes of division, d elongation and differentiation in plants) and facilitate its transport in the apex of the plant, resulting in a better anchoring of the plant to the soil.
- auxin phytohormone involved in the processes of division, d elongation and differentiation in plants
- the plant can benefit from a greater amount of water and a larger supply of nutrients, which also improves its growth.
- the use of at least one nonionic surfactant derived from polyols makes it possible to improve the efficiency of the nutrients, that is to say the use of nutrients by the plant. This use also makes it possible to improve the yield of seed or fruit plants, the yield being calculated by the ratio of the weight of seeds or fruits harvested on the sown surface.
- these activities of stimulation or improvement can be related, in particular, to the root growth, and in particular to the formation of the rootlets and / or to the vertical anchoring of the roots (root architecture).
- These phenomena allow the plant to fetch nutrients, especially minerals, in deep parts, especially the hard parts, from the soil, and / or accumulate nutrient reserves necessary for the development of seeds and / or fruits.
- DE3234610 discloses the use of glycerol derivatives as plant growth regulators. However, the application DE3234610 does not describe a nonionic surfactant derived from sugar.
- the application EP1570735 describes a composition comprising any one of the organic compounds 1), 2) and 3) defined in paragraph [001 1], and in particular a glycerol derivative 3), as agent for promoting plant growth.
- This promotion agent is combined, in particular, with a fertilizer, a surfactant which may be nonionic (paragraph [0043]) and a chelant.
- said surfactants are used as an additive in the composition (emulsifier, solubilizer, dispersant, etc.) and not as an agent having an activity with respect to the growth of the plant.
- EP2183959 discloses the use of a sugar derivative surfactant to impart to plants abiotic stress resistance (s), such as salt or osmotic stress, drought, or temperature, or still resistance to biotic stress.
- abiotic stress resistance such as salt or osmotic stress, drought, or temperature
- the examples in this application relate only to resistance to abiotic stress (es).
- the stress tolerance is measured by comparing the fresh weight of the untreated (control) plants with that of the treated plants. No measurements are made on the seeds or the root system.
- EP2183959 does not disclose or suggest a specific stimulatory activity of a sugar derivative surfactant with respect to germination and / or root growth and / or vertical anchoring of roots.
- nonionic surfactant derived from polyols is carried out in an amount sufficient to stimulate or promote germination and / or root growth, and / or vertical rooting of a plant.
- the nonionic surfactant derived from polyols is preferably used in a composition in the form of a monophasic solution, or an emulsion, in particular in the form of an aqueous monophasic solution.
- said nonionic surfactant derived from polyols is used in a range from about 0.01% to about 80% by weight of nonionic surfactant derived from polyols relative to the total weight of the composition, more preferably about From about 0.05% to about 30%, and even more preferably from about 0.5% to about 3%.
- nonionic surfactants derived from polyols used as stimulating agent for plant growth as defined above or as an adjuvant are, as indicated above, preferably non-organic surfactants.
- ionic derivatives derived from sugars and may be chosen especially from sugar and fatty acid esters, alkylmonoglucosides, alkylpolyglucosides, alkylmonoglucoside and fatty acid esters, alkylpolyglucoside esters and of fatty acid (s) and N-alkylglucamides.
- sugar is meant a mono or polysaccharide, preferably sucrose, sorbitan, or glucose, more preferably sucrose or glucose.
- fatty acid is meant a carboxylic acid comprising a saturated or unsaturated hydrocarbon chain in which the number of carbon atoms of the hydrocarbon chain, including the carbon atom of the carboxylic acid function, is between 6 and 26 preferably, between 8 and 20, more preferably between 10 and 18.
- the fatty acid is chosen from stearic acid, lauric acid, palmitic acid, and oleic acid, preferably lauric or stearic acid.
- the sugar ester and fatty acid (s) is chosen from sucrose esters, sorbitan esters, and glucose esters, more preferably the sugar and fatty acid ester (s) is chosen from sorbitan laurate, sucrose palmitate, glucose stearate, and sucrose stearate, even more preferably sugar ester and fatty acid (s) is sucrose stearate, also called sucrose stearate.
- alkyl By an “alkyl” group is meant a linear or branched, saturated or unsaturated hydrocarbon chain.
- alkylmonoglucoside is meant a molecule formed by the reaction of a glucose unit with an alcohol.
- the alkyl group of the alcohol comprises from 6 to 26 carbon atoms, more preferably from 8 to 20 carbon atoms, even more preferably from 10 to 18 carbon atoms.
- the alkylmonoglucoside is chosen from decylglucoside, laurylglucoside and cetearyl glucoside, preferably the alkylmonoglucoside is decylglucoside.
- alkylpolyglucoside is meant a molecule formed by the reaction of several glucose units, linked together by a glycosidic linkage, with an alcohol.
- the alkylpolyglucoside consists of 2 to 6 units of glucose, more preferably 3 to 5 units of glucose.
- the The alkyl group of the alcohol comprises from 6 to 26 carbon atoms, more preferably from 8 to 20 carbon atoms, even more preferably from 10 to 18 carbon atoms.
- Alkylglucoside and fatty acid esters are, for example, methylglucose dioleate or methylglucose sesquistearate.
- N-alkylglucamide denotes a compound whose nitrogen atom is substituted by an alkyl group comprising from 1 to 5 carbon atoms, preferably from 1 to 3 carbon atoms, more preferably 1 carbon atom.
- the amide portion of N-alkylglucamide comprises from 6 to 26 carbon atoms, more preferably from 8 to 20 carbon atoms, even more preferably from 10 to 18 carbon atoms.
- the N-alkylglucamide is N-lauroyl-N-methylglucamide.
- the nonionic surfactant derived from polyols is ethoxylated or unethoxylated.
- "Surfactant derived from ethoxylated polyols” denotes a surfactant derived from polyols as defined above, the free hydroxyl functions of which have reacted with ethylene oxide, resulting in groups of the -O (C2H 4 ) n OH type, n being between 1 and 15, preferably between 3 and 12, more preferably between 5 and 10.
- the use of the nonionic surfactant derived from polyols is carried out in an amount sufficient to stimulate or promote germination and / or root growth, in particular the formation of rootlets, and / or the vertical rooting of a plant (root architecture).
- the said nonionic surfactant derived from polyols may be used in combination with nutrients, one or more fertilizers, one or more growth regulators and / or biocontrol products.
- the use of the nonionic surfactant derived from polyols may be supplemented by the use of one or more substances which are intended to prevent the action of plant pests (elicitors, fungicides, fungicides, bactericides, bacteriostats, insecticides, acaricides, parasiticides, nematicides, taupicides, repellent for birds or game), simultaneously or sequentially.
- the use of the nonionic surfactant derived from polyols can be made in combination with the use of one or more substances that are intended to destroy unwanted plants or slow down their growth (herbicides, antidicotyledons).
- nonionic surfactant derived from polyols also makes it possible to promote water absorption and / or water retention in the leaves, roots and integuments, spreading on the surface of the plants (aerial parts and to increase the contact surface, the passage of molecules through the middle lamella or to increase the contact time with the active or nutritive substances, or to limit the evaporation of water by the leaves, such as described below.
- the use of the nonionic surfactant derived from polyols can be made in pre or post emergence, on the seed, the seedling (juvenile stage prior to flowering), the flowering plant (before , during or after pollination), the plant after fertilization, the fruiting plant, the fruit, the flowers, the leaves, the stems, the roots or in the soil, and / or the culture medium, before or after sowing .
- emergence is meant the emergence of a seedling from the soil.
- the nonionic surfactant derived from polyols is applied to the seed. It is possible to treat plants grown in the field or plants under glass or plants grown above ground.
- nonionic surfactant derived from polyols according to the invention can be made on any type of plant, the plant being chosen from the Dicotyledons or Monocotyledons and more particularly in the group comprising cereals and cereal products, root and tuber crops, saccharifIER), leguminous plants, nut plants, oleaginous or oleaginous plants, vegetable culture plants , fruit trees, aromatic plants and spices, flowering plants, industrial crop plants for the production of a raw material for processing, etc.
- Examples of cereals and cereal products are wheat, rapeseed, or corn.
- Examples of root and tuber crops are manioc, sweet potato, yam, colocase, macabo, potato, Jerusalem artichoke, crosne, jicama, beet, nasturtium, carrot, celeriac, tuberous chervil, kohlrabi, barren conopod, radish, dahlia, ginger, ginseng, tuberous glycine, helianthi, hoffe, maca, turnip, parsnip , tuberous parsley, earth pear, horseradish, rutabaga, salsify, Spanish scolyme, scorzonera, or ulluco.
- sacchar is meant a plant producing sugar; for example, sugar beet or sugar cane.
- legumes examples include lentils, split peas, peas, chickpeas, beans, beans, soybeans, peanuts, clover, carob, licorice, or alfalfa.
- Examples of nut plants are nuts, almonds, or hazelnuts.
- oleaginous or oleaginous plants examples are rapeseed or sunflower.
- Examples of vegetable crops are tomato, or zucchini.
- Examples of fruit trees are strawberry, cherry, or banana.
- Examples of aromatic plants and spices are parsley, or cinnamon.
- Examples of floral plants are chrysanthemum, rose bush, or Buddieja davidii.
- Examples of industrial crop plants for producing a raw material for processing are flax or cotton.
- the plant is selected from soybean, corn, parsley, strawberry and Buddieja davidii (also called butterfly tree), more preferably, the plant is selected from corn and parsley.
- the present invention also relates to a method for stimulating germination and / or root growth, and / or vertical anchoring of the roots of a plant! comprising applying at least one nonionic surfactant derived from polyols as described above.
- the step of applying the nonionic surfactant derived from polyols may be carried out after emergence or before emergence.
- the nonionic surfactant derived from polyols may be applied by spraying, watering the plant, adding to a culture medium in hydroponics, immersing the seed and / or coating the seed, preferably by seed immersion.
- the invention also relates to the use of at least one nonionic surfactant derived from polyols, as described above, as an adjuvant.
- said polyol derivative is a sugar derivative.
- adjuvant is meant a compound or a preparation devoid of phytopharmaceutical activity that is added to plant protection products to enhance their physical, chemical and / or biological properties.
- Plant protection product or plant protection product means an active substance or a composition comprising one or more active substances, which is intended in particular for:
- the active substances may be either of natural origin or derived from synthetic chemistry, which may be mimetics of natural substances, such as pheromones.
- Adjuvants are not phytopharmaceutical products, they have no protective action against bio-aggressors such as plant protection products, but they facilitate their role by improving their performance (retention and / or spreading) and can reduce the harmful effects like runoff or drift.
- phytosanitary products require a particular preparation depending on the mode of treatment, the treated surface and the treated crop.
- the solution of phytosanitary product (s) prepared is called phytosanitary solution.
- slurry a solution of phytosanitary product (s).
- the activity of a compound or preparation as an adjuvant requires that said compound or preparation has at least one of the following functions: - Spreading activity: Allows the retention and spreading of the droplets of the slurry by decreasing the surface tension on the surface thereof.
- - Penetrating activity Promotes the penetration of the phytosanitary product.
- - Retention activity Promotes the maintenance of the droplets of the porridge on the leaf at the moment of impact.
- Adhesiveness Promotes the maintenance of the porridge after the impact. Provides better resistance to leaching and evaporation.
- - Humectant activity Helps maintain hygrometry on the surface of the sheet: avoids the crystallization of the active ingredient and the evaporation of the slurry.
- Acidifying activity Some active substances are rapidly degraded in a basic medium (pH> 7) which reduces their effectiveness. Acidifiers help maintain the pH between 5 and 7.
- Solubilizing activity promotes the miscibility of immiscible substances with each other.
- Remanence activity allows the reactivation of the molecules during a new exposure to water.
- Bio-compatibility property does not interfere with different strains of microorganisms (bacteria, yeast or fungi).
- - Property of spontaneous solubility soluble indifferently in water and in oil.
- said nonionic surfactant derived from polyols has one or more activity (s) chosen from the following:
- the ability of said nonionic surfactant derived from polyols to combine several or all of these functions simultaneously makes it possible to effectively and significantly reduce the use of plant protection products while increasing their level of effectiveness.
- the invention thus meets an ecological vision by ensuring a stronger environmental safety, a better effectiveness of the active substances and the modulation of doses.
- the invention also relates to a phytopharmaceutical treatment method, comprising the administration to a plant of a nonionic surfactant derived from polyols as defined above as an adjuvant of a phytopharmaceutical product.
- a nonionic surfactant derived from polyols as a plant growth promoter exerting activity on the seeds and / or roots of a plant apply also as part of its use as an adjuvant.
- Figure 1 Effect of sucrose stearate on soybean germination: percentage of sprouts treated or untreated (control) versus time (days).
- Figure 2 Effect of sucrose stearate on germination of maize seeds: percentage of sprouts treated or untreated (control) as a function of time (days).
- Figure 3 Effect of sucrose stearate on germination of parsley seeds: percentage of sprouts treated or untreated (control) as a function of time (days).
- Figure 4 Effect of sucrose stearate on the ability of parsley seeds to absorb water. Percentage of water absorbed as a function of sucrose stearate concentration compared to untreated seeds (control).
- Figure 5 Effect of sucrose stearate on root growth of parsley: on the left the percentage of root size between 100 and 120 mm and between 120 and 140 mm is measured in comparison with that of untreated plants (control) on the right the average diameter of the pivot is measured in comparison with that of the untreated (control) plants, below the average weight of the pivot is measured in comparison with that of the untreated plants (control).
- Figure 6 Effect of sucrose stearate on parsley root capacity to absorb water. Two days after watering, the roots are removed, weighed and placed at 42 ° C. After 30 minutes, 1 hour 30 minutes, 2 hours, 4 hours and 48 hours, the weight of The roots are raised and the amount of water retained is calculated as a percentage of the initial weight.
- Figure 7 Effect of sucrose stearate on the spreading of an aqueous solution on a sheet: the number and size of the drops on the upper surface of the sheet are compared after spraying water (control) or solution comprising 0.75% sucrose stearate.
- Figure 8 Effect of sucrose stearate on the evaporation of water on the leaf surface. The weight of the leaf is noted before the treatment, 1 min after, then every 5 min. The percentage of water retained is calculated based on initial weight on leaves treated with 3% sucrose stearate or water (control).
- Figure 9 Effect of sucrose stearate on the calcium content of the leaves. After seven days of treatment with a water solution (control) or 3% sucrose stearate, the leaves are harvested and analyzed for calcium content.
- Figure 10 Effect of sucrose stearate on the protein content of parsley. After 23 days of treatment with a water solution (control) or 0.75% sucrose stearate the leaves are cut and an analysis of the amount of protein is carried out.
- Figure 11 Effect of sucrose stearate on root growth on maize seeds: comparison of untreated (control) seeds to treated seeds after two days.
- Figure 12 Effect of sucrose stearate on vertical root anchorage of parsley seeds (field trials): comparison of untreated (control) seeds with treated seeds after 12 weeks.
- Figure 13 Effect of sucrose stearate (treated lot) and sorbitan laurate (Sub4 lot) on germination of maize seeds: percentage of sprouts treated (treated batch and Sub4) or untreated (control) after one and two days.
- FIG 14 Effect of Sucrose Stearate (Processed Lot) and Sucrose Palmitate (Subi Lot) on Germination of Corn Seeds: Percentage treated sprouts (processed and untreated) or untreated (control) after one and two days.
- Figure 15 Effect of sucrose stearate (treated batch) and glucose stearate (Sub7 lot) on germination of maize seeds: percentage of sprouts treated (treated batch and Sub7) or untreated (control) after one and two days.
- Figure 16 Effect of sucrose stearate (treated lot) and polyethoxylated sorbitan laurate (Lot Sub2) on germination of maize seeds: percentage of sprouts treated (treated lot and Sub2) or untreated (control) after one and two days.
- Figure 17 Effect of sucrose stearate (treated batch) and decyl glucoside (Sub3 batch) on germination of maize seeds: percentage of germinated seeds treated (batch treated and Sub3) or untreated (control) after one and two days .
- Figure 18 Effect of sucrose stearate (treated lot) and N-lauroyl-N-methyl-glucamide (Sub6 lot) on germination of maize seeds: percentage of sprouts treated (treated batch and Sub6) or untreated ( control) after one and two days.
- Figure 19 Effect of sucrose stearate (treated batch) and methylglucose dioleate (Sub5 lot) on germination of maize seeds: percentage of germinated seeds treated (treated batch and Sub5) or untreated (control) after one and two days.
- Figure 20 Effect of sucrose stearate on the penetration of a colored aqueous solution: comparison of the steps before treatment, the deposition of treatment, after 2 hours of application and after wiping.
- FIG. 21 Effect of sucrose stearate on the limitation of drift: comparison of the size of the droplets following the spraying of an aqueous solution comprising sucrose stearate (batch treated) and an aqueous solution containing none (batch control), according to different increasing pressures applied (a, b and c).
- Figure 22 Effect of sucrose stearate on tackiness of a solution on a leaf: comparison of untreated leaves (control lot) to treated leaves before and after spraying the solution, then after leaching.
- Figure 23 Effect of sucrose stearate on foam formation: comparison of a control solution with a treated solution before stirring, immediately after stirring, and 1 h after stirring.
- Figure 24 Effect of sucrose stearate on solubilization: comparison of a control solution with a treated solution.
- Figure 25 Effect of sucrose stearate on the change in pH: pH as a function of the concentration of a solution according to the invention comprising 2.5% sucrose stearate.
- Figure 26 Effect of sucrose stearate on homogenization: comparison of a control mixture with a mixture comprising sucrose stearate (batch treated). Left: after a passage in the oven (45 ° C) for 24h, right: after centrifugation for 20 minutes at 4000 rpm.
- Figure 27 Effect of sucrose stearate on the remanence: comparison of the color of the rinsing water obtained after 1, 2, 3 and 4 rinses of a control solution and a solution comprising sucrose stearate (treated).
- Figure 28 Effect of sucrose stearate on the remanence: measurement of the color of the rinsing water at 630 nm (OD) as a function of the number of rinses for the control batch and the batch treated.
- Figure 29 Solubility of sucrose stearate in water (Lot A) or in oil (Lot B) after centrifugation for 5 min at 4000 rpm.
- Figure 30 Effect of sucrose stearate on the decrease in the concentration of phytosanitary products on wheat: comparison at the beginning of the heading of a batch without sucrose stearate (reference control) with a batch comprising (treated).
- Figure 31 Effect of sucrose stearate on the decrease in the concentration of phytosanitary products on maize: comparison to the 12-14-leaf stage of a batch without sucrose stearate (reference control) with a batch comprising (treated).
- Example 1 Use of a sugar ester as a stimulating substance for the germination of soya beans.
- the sugar ester used is sucrose stearate.
- soybeans The treatment of soybeans consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 99.25% water and 0.75% sucrose stearate (lot treated ). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Four batch repetitions of 15 seeds are deposited on Petri dishes containing a medium composed of 2% Agar Agar and 98% water. The Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted.
- Example 2 Use of a sugar ester as a substance stimulating the germination of corn seeds.
- the sugar ester used is sucrose stearate.
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 99.25% water and 0.75% sucrose ester (treated batch). ). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Four batch repetitions of 16 seeds are deposited on Petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- Example 3 Use of a sugar ester as a substance stimulating germination of parsley seeds.
- the sugar ester used is sucrose stearate.
- parsley seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 99.25% water and 0.75% sucrose ester (treated batch). ). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 48 seeds are deposited on petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- the Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted.
- sucrose stearate by immersion of the parsley seeds increases the kinetics of germination by an average of 10%.
- Example 4 Effect of a sugar ester on the ability of seeds to absorb water.
- the sugar ester used is sucrose stearate.
- parsley seeds The treatment of parsley seeds consists of immersing 1 g of parsley seeds in:
- the sugar ester used is sucrose stearate.
- the seeds are sown mechanically (sowing) on planks of four rows each next to each other to minimize variations in soil quality, sunshine and temperature.
- the diameter of the pivot of the treated plants is on average 30% greater compared to the control
- the weight of the pivot of the treated plants is on average 70% greater compared to the control.
- sucrose stearate on the seeds allows better root growth on parsley plants grown in the field.
- Example 6 Effect of a sugar ester on the capacity of the roots to absorb water.
- the sugar ester used is sucrose stearate.
- Potted parsley plants are grown in a climatic chamber under the following conditions: 23 ° C and a photoperiod of 16h / 8h.
- a pot of parsley contains between 20 and 25 feet of parsley.
- the treatment of parsley plants consists of watering the pots with:
- the amount of water absorbed increases linearly with the amount of sucrose stearate applied during the treatment (0.05 and 0.15%).
- sucrose stearate in watering facilitates the absorption of water by the roots. This can be explained by root growth and in particular the modification of the root architecture.
- Example 7 Effect of a sugar ester on the spreading of an aqueous solution on a sheet.
- the sugar ester used is sucrose stearate.
- Strawberry plants are grown in a climatic chamber under the following conditions: 23 ° C and a photoperiod of 16h / 8h.
- sucrose stearate The effect of sucrose stearate is observed by the number and size of the drops on the upper surface of the leaf.
- sucrose stearate spray With the application of sucrose stearate spray the solution is distributed homogeneously on the sheet, the spreading drops is optimized. In addition, a much larger passage of the solution on the underside was observed, compared to the control lot.
- sucrose stearate increases the contact surface and thus optimizes phytosanitary treatments.
- EXAMPLE 8 Effect of a sugar ester on the evaporation of water on the surface of the leaves
- the sugar ester used is sucrose stearate, a solution of which is applied by spraying on leaves detached from Buddieja davidii placed flat on a support.
- the treatment consists in spraying on the detached leaves:
- the weight of the leaf is noted before the treatment, 1 min after, then every 5 min.
- the percentage of water retained is calculated based on the initial weight.
- the amount of water retained by the treated leaves is 3 to 8 times greater than the water retained by the control leaves.
- sucrose stearate by spraying limits the evaporation of an aqueous solution on the leaves and thus increases the contact time.
- the invention therefore has a humectant effect by promoting the maintenance of hydromethane on the surface of the sheet.
- Example 9 Effect of a sugar ester on the calcium content of the leaves (improved penetration).
- the sugar ester used is sucrose stearate.
- Potted parsley plants are grown in a climatic chamber under the following conditions: 23 ° C and a photoperiod of 16h / 8h.
- the application of the invention is by watering in the bins (180 ml) every three days and spraying on the leaves twice a day for seven days: - water (batch control)
- the leaves are harvested and analyzed for calcium.
- the treatment with the invention allows a 17% decrease in the level of calcium in the leaves.
- Spray application and watering of sucrose stearate decreases the amount of leaf calcium, a key element in the rigidity of the middle lamella, which increases the permeability of the middle lamella. Therefore, the application of a sugar ester according to the invention allows a better penetration of the products applied to the plant.
- EXAMPLE 10 Effect of a sugar ester on the protein content of parsley (improvement of the efficiency of nutrients).
- the sugar ester used is sucrose stearate.
- Potted parsley plants are grown in a climatic chamber under the following conditions: 23 ° C and a photoperiod of 16h / 8h.
- the treatment of parsley plants consists of watering the pots every three days with: - 40 ml of water (batch control)
- Each batch consists of four pots. After 23 days of treatment the leaves are cut and an analysis of the amount of protein is carried out. The results are shown in Figure 10. The batch treated with sucrose stearate allows a 56% increase in the amount of protein compared to the control lot.
- sucrose stearate in the water of irrigation allows a more important protein synthesis, which shows a better assimilation of the nitrogen.
- Example 11 Effect of a sugar ester on root growth.
- the sugar ester used is sucrose stearate.
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control lot) or in a solution composed of 97.5% water and 2.5% sucrose stearate (batch treated ). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Four batch repetitions of 16 seeds are deposited on Petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- the Petri dishes are kept at room temperature and in the dark.
- Example 12 Effect of a sugar ester on the vertical anchorage of the root (field trials).
- the sugar ester used is sucrose stearate.
- the treatment consists of an immersion for 1 hour of NOVAS parsley seeds:
- the seeds are then dried in a heating tunnel at 45 ° C for 1 h.
- the seeds are sown mechanically (sowing) on planks of four rows each next to each other to minimize variations in soil quality, sunshine and temperature.
- Example 13 Use of sorbitan laurate as a substance stimulating the germination of corn seeds. Sorbitan laurate (Sub4) was used in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Sub4). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- the Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted. Results after one day and two days (J1 and J2 respectively) are shown in Figure 13.
- Example 14 Use of sucrose palmitate as a substance stimulating the germination of corn seeds.
- Sucrose palmitate (Subi) was used in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Subi). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- the Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted. Results after one day and two days (D1 and D2 respectively) are shown in Figure 14.
- Example 15 Use of glucose stearate as a substance stimulating the germination of corn seeds. Glucose stearate (Sub7) was used in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Sub7). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water. The Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted.
- Example 16 Use of polyethoxylated sorbitan laurate as a substance stimulating the germination of corn seeds.
- Polyethoxylated sorbitan laurate (Sub2) was used, the latter also being called polysorbate 20, in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Sub2). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water. The Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted.
- Example 17 Use of decyl glucoside as a substance stimulating the germination of corn seeds.
- Decyl glucoside (Sub3) was used in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Sub3). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- Example 18 Use of N-lauroyl-N-methylglucamide as a substance stimulating the germination of corn seeds.
- N-lauroyl-N-methylglucamide (Sub6) was used in comparison with treatment with water alone (control), or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, Sub6). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water. Results after one day and two days (D1 and D2 respectively) are shown in Figure 18.
- Example 19 Use of methylglucose dioleate as a substance stimulating the germination of corn seeds.
- Methylglucose dioleate (Sub5) was used in comparison with treatment with water alone (control) or with sucrose stearate (treated).
- Treatment of maize seeds consists of immersing them for 1 hour in a solution comprising water alone (control batch) or in a solution composed of 98.25% water and 0.75% of a nonionic surfactant. polyol derivative (batch treated, sub5). The seeds are then dried in a heating tunnel at 45 ° C for one hour. Two batch repetitions of 16 seeds are placed on petri dishes containing a medium composed of 2% Agar Agar and 98% water.
- the Petri dishes are kept at room temperature and in the dark. Every day the number of sprouts (with a radicle) is counted. Results after one day and two days (D1 and D2 respectively) are shown in Figure 19.
- the sugar ester used is sucrose stearate.
- Example 21 Effect of a sugar ester on the penetration of the slurry.
- the sugar ester used is sucrose stearate.
- Rapeseed a plant known to have a thick cuticle, was chosen to test the effectiveness of the invention as a penetrating agent. A dye in aqueous solution was deposited on a rapeseed sheet, then left for 2 hours and then wiped. Two solutions were tested:
- Treated a solution comprising 97.5% water and 2.5% sucrose stearate. Snapshots were taken at each step and are shown in Figure 20.
- the use of the sugar ester according to the invention makes it possible to increase the capacity of an aqueous solution to penetrate into the cuticle, which shows that it can be used as a penetrating agent.
- Example 22 Effect of a sugar ester on the limitation of drift.
- the sugar ester used is sucrose stearate.
- two solutions were sprayed with a conventional slot-type nozzle:
- sucrose stearate (batch treated). Increasing pressures (2, 4 and 8 bar) were used to test different conditions ( Figure 21: a, b and c respectively). The higher the pressure, the more the drops are numerous and fine.
- the use of the sugar ester according to the invention allows an increase in the size of the drops.
- the use of the sugar ester according to the invention therefore makes it possible to limit drift by promoting the increase in the size of the drops or droplets.
- Example 23 Effect of a sugar ester on the tackiness of a solution on the sheet
- the sugar ester used is sucrose stearate.
- a solution is applied by spraying on detached leaves of Buddleja davidii placed flat on a support.
- the treatment consists in spraying on the detached leaves:
- the leaves are then left at room temperature until complete evaporation of the sprayed solutions. 14 grams of water are then sprayed on the leaves held vertically to simulate rain. The titanium residues on the sheet are then observed.
- EXAMPLE 24 Effect of a sugar ester on the formation of the foam during the preparation of the slurry.
- the sugar ester used is sucrose stearate.
- treated batch a solution composed of 98% of water, 1% of foaming agent (cocamidopropyl betaine) and 1% of sucrose stearate.
- the two solutions are then stirred in an equivalent manner, photos are taken before, immediately after stirring and 1 h after stirring.
- the results are shown in FIG. 23.
- the results show that the use of a sugar ester according to the invention makes it possible to reduce the volume of foam obtained immediately after stirring by 30%.
- the invention prevents the formation of foam during the preparation of phytosanitary slurries.
- the sugar ester used is sucrose stearate.
- Example 26 Effect of a sugar ester on the change of the pH of the slurry.
- the sugar ester used is sucrose stearate.
- a solution at pH 9.4 was prepared on the one hand, and a solution composed of 97.5% of water, 2.5% sucrose stearate was prepared secondly.
- the solution comprising sucrose stearate (solution according to the invention) was added to the solution at pH 9.4 with different concentrations: 0.1%, 0.5%, 1%, 2%, 3%, 5% and 10%.
- the pH was measured after each addition of the invention.
- the sugar ester used is sucrose stearate.
- batch treated mixture comprising 5% of sunflower oil and 95% of a solution composed of 97.5% water and 2.5% sucrose stearate.
- control batch has two phases while the batch treated has a single phase, including after centrifugation.
- Example 28 Effect of a sugar ester on the remanence of the slurry at the leaf surface.
- the sugar ester used is sucrose stearate.
- results are shown in FIG. 27.
- the results show that, on the batch, the remanence of the slurry disappears at the 2nd rinse, whereas on the treated batch the presence of slurry remains present even after the 4th rinse.
- the sugar ester used is sucrose stearate.
- the method consists of:
- the dishes are then put in the oven at 25 ° C for 5 days. A measurement of the inhibition diameter is carried out each day.
- the tested solutions are:
- -Treated 1% a solution consisting of 99% water and 1% sucrose stearate
- -Treated 3% a solution composed of 97% water and 3% sucrose stearate
- -Treated 10% a solution composed of 90% water and 10% sucrose stearate
- Example 30 Solubility of a sugar ester.
- the sugar ester used is sucrose stearate.
- sucrose stearate was mixed with water (Lot A) or with sunflower oil (Lot B). After mixing, both solutions were centrifuged for 5 min at 4000 rpm. A photo was taken after centrifugation and is shown in Figure 29.
- Example 31 Effect of a sugar ester on the reduction of phytosanitary products on wheat.
- Priaxor® contains two active ingredients: fluxapyroxad (belonging to the family of SDHI) and pyraclostrobin (belonging to the strobilurin family), and Relmer® Pro comprises the active substance metconazole (belonging to the family of triazoles). Two tests were carried out:
- the bins were then removed from the climatic chamber and placed near a field with more than 50% wheat feet with Septoria. After 1 day, the tanks are returned to climatic chamber under controlled conditions.
- the sugar ester used is sucrose stearate.
- the bins were then removed from the climatic chamber and placed near a field with more than 50% maize feet affected by helminthosporiosis. After 1 day, the tanks are returned to climatic chamber under controlled conditions.
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- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
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Abstract
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FR1757557A FR3069756B1 (fr) | 2017-08-07 | 2017-08-07 | Tensioactif non ionique comme biostimulant |
PCT/FR2018/052033 WO2019030456A2 (fr) | 2017-08-07 | 2018-08-07 | Utilisation d'un tensioactif non ionique dérivé de polyols en tant qu'agent stimulateur de la croissance végétale ou en tant qu'adjuvant |
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EP (1) | EP3664610A2 (fr) |
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CA (1) | CA3072122A1 (fr) |
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EP3664612A1 (fr) | 2017-08-07 | 2020-06-17 | Elicit Plant | Composition a base de polyol(s) et de sterol(s) pour usage dans le domaine agricole |
FR3109262B1 (fr) | 2020-04-20 | 2023-03-31 | Elicit Plant | Procede de traitement preventif d’une plante cultivee pour limiter la perte de matiere seche liee a un stress abiotique et/ou biotique |
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JPS5157556A (en) * | 1974-11-07 | 1976-05-20 | Dai Ichi Kogyo Seiyaku Co Ltd | Inenoseiikukairyo oyobi zoshuzai |
DE3234610A1 (de) * | 1982-09-16 | 1984-03-22 | Schering AG, 1000 Berlin und 4709 Bergkamen | Benzylaetherderivate des glycerins, verfahren zur herstellung dieser verbindungen sowie diese enthaltende mittel mit wachstumsregulatorischer wirkung fuer pflanzen |
ES2429897T3 (es) * | 2000-04-28 | 2013-11-18 | Kao Corporation | Agente activador de plantas |
AU2008292339B2 (en) * | 2007-08-31 | 2012-07-26 | Kao Corporation | Method for imparting stress tolerance to plant |
CN103070167B (zh) * | 2010-03-30 | 2014-11-26 | 湖州紫金生物科技有限公司 | 一种鼠李糖脂作为助剂的应用 |
WO2011132197A1 (fr) * | 2010-04-20 | 2011-10-27 | Chetan Balar | Composé efficace pour l'augmentation de la croissance reproductrice de plantes cultivées, de plantes végétales, de plantes à épices, de plantes à fleurs et de jardinage associées |
CN106889068A (zh) * | 2017-03-03 | 2017-06-27 | 山东本源生态农业科技有限公司 | 一种促进植物生根发芽的调节剂、及其制备方法和应用 |
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- 2018-08-07 EP EP18762383.0A patent/EP3664610A2/fr active Pending
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CA3072122A1 (fr) | 2019-02-14 |
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