Classifications

• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05C—NITROGENOUS FERTILISERS
  • C05C9/00—Fertilisers containing urea or urea compounds
• • 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
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
  • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
  • A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
• • 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
  • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
  • A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05C—NITROGENOUS FERTILISERS
  • C05C5/00—Fertilisers containing other nitrates
  • C05C5/04—Fertilisers containing other nitrates containing calcium nitrate
• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
  • C05D3/00—Calcareous fertilisers
• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
  • C05F11/00—Other organic fertilisers
  • C05F11/10—Fertilisers containing plant vitamins or hormones

Definitions

• the present invention relates to an agricultural composition, in particular to a fertilizer composition.
• Plants need a range of nutrients for healthy growth. These include macronutrients such as nitrogen, phosphorus, potassium, carbon and water, secondary nutrients such as calcium, magnesium, sodium, chloride and sulphur, as well as micronutrients, which include copper, cobalt, iron, manganese, boron, molybdenum, zinc, silicon and nickel.
• macronutrients such as nitrogen, phosphorus, potassium, carbon and water
• secondary nutrients such as calcium, magnesium, sodium, chloride and sulphur
• micronutrients which include copper, cobalt, iron, manganese, boron, molybdenum, zinc, silicon and nickel.
• Calcium is important in maintaining cell wall strength and membrane integrity. Both of these properties are essential in ensuring quality of crops, in particular fruit and vegetables crops, and in providing and maintaining adequate shelf life. Due to a plant's physiology, environment or growing conditions calcium distribution in the plant can be uneven, with areas of localized insufficiency. A plant as a whole may not be calcium deficient, but some part of that plant may be low in calcium causing difficulties to that specific part of the plant. This may occur as calcium uptake and movement within a plant is erratic, with the calcium moving passively through the plant' s transpiration stream. This limits the throughput of calcium in areas with low water loss, such as those parts which are shaded or below the ground.
• auxin is a plant hormone having the chemical name indol-3-acetic acid and is also known as IAA. Areas of the plant that are high in auxin can absorb calcium more readily and act as a sink for calcium in the plant. Some tissues and organs are naturally higher in auxin than others. Seeds, new leaves or shoots, flowers and meristems are all high in auxin and can act as sinks for calcium; whereas mature leaves, roots and stems are all low in auxin content. Dependent on the physiology of the crop, the main sinks for calcium change throughout the season according to the developmental stage of the plant. Crop husbandry can also affect this.
• the applicants have now found an improved manner of administering calcium to plants and, in particular, of supplying calcium to plant tissue low in auxin. They have now found a means of allowing plants to take up and retain calcium in environments or conditions in which they would conventionally not be able to do so.
• the present invention provides an agricultural composition comprising: (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• suitable water-soluble salts of calcium include nitrates, sulphates and chlorides, with nitrates and chlorides being preferred.
• the water-soluble salt of calcium is suitably present in the composition or formulation of the present invention in an amount of up to 15%w/w, preferably from 1 to 15% w/w, more preferably 2 to 15%, e.g. 2 to 10% w/w, and most preferably from 4 to 6% w/w e.g. around 5% w/w.
• the water-soluble salt of calcium may be present as a solid powder. It may, for example, be in the form of particles or granules. In this form the water-soluble calcium salt may be coated with the auxin mimic.
• auxin mimic is used herein to mean a compound that is able to produce within a plant one or more of the effects that the plant hormone auxin naturally produces .
• weak auxin mimics are preferred, which are not sufficient to cause an undesirably strong auxin growth response.
• auxin mimics that in addition to their auxin-like properties are also able to produce within a plant one or more of the effects that the plant hormone cytokinin naturally produces.
• the auxin-like effects of such auxin mimics are counterbalanced by the cytokinin-like properties allowing increased calcium absorption without undesirable growth patterns.
• the auxin mimic may be a natural or synthetic auxin mimic.
• the auxin mimic is an aryl substituted urea.
• aryl includes optionally substituted aromatic groups which may be carbocyclic (such as phenyl) or heterocyclic in that they contain, within the ring, one or more heteroatoms such as nitrogen, oxygen or sulphur.
• An example of a heterocyclic aryl group is pyridyl .
• Suitable optional substituents for aryl groups include groups such as halo (for example chloro) , nitro, hydroxyl (for instance a phenol) and C ⁇ - ⁇ alkyl such as methyl or ethyl. The substituents should be such that the compound retains its property of being an auxin mimic.
• aryl groups are optionally substituted phenyl groups .
• the aryl substituted urea may be unsymmetrically or preferably symmetrically substituted. Examples include chloro-pyridyl- phenyl urea (CPPU) .
• the auxin mimic is preferably an unsymmetrically or a symmetrically substituted diphenyl urea (DPU) or a derivative thereof (wherein one or both of the phenyl groups is optionally substituted as described above) . Examples include diphenyl urea (DPU), 2-nitro DPU (NDPU), mono- or di- methyl DPU and mono-or di- ethyl DPU.
• the auxin mimic is most preferably diphenyl urea (DPU) , which is also known as carbanilide. DPU is particularly preferred as at low application rates it exhibits cytokinin-like properties, but at higher rates it additionally exhibits auxin-like properties.
• a suitable source of the auxin mimic is seaweed extract.
• the auxin mimic is suitably present within the composition or formulation of the present invention at a rate of up to 5%, preferably from 0.001 to 5%w/w, and more preferably from 0.005 to 5% w/w, and most preferably from 0.01 to 5%w/w.
• DPU may be present for example in an applied formulation at a rate of 10g/L.
• the auxin mimic may be present in the composition according to the invention at a concentration in the range of 20 to 2000 ppm, and preferably in the range 30 to 300 ppm, most preferably in the range of 20 to 200 pm, e.g. 50 to 100 ppm.
• the present invention is advantageous as it leads to increased cellular integrity by preventing areas of local calcium deficiency.
• Parts of the plant that are low in calcium, particularly those that are to be harvested, can be targeted using the present invention and calcium can be pulled into those parts by increasing calcium uptake by those parts.
• the present invention allows the plant' s calcium sinks to be balanced, allowing the plant to retain applied calcium where it is applied or required.
• conventional calcium fertilisers may be able to increase the calcium content of the whole plant, the present invention allows calcium uptake to be improved in those parts of the plant which are calcium deficient. Resistance to disease such as fungal disease is thereby increased.
• the present invention is useful in reducing physiological disorders associated with calcium insufficiency including blossom end rot (seen in tomato, pepper, aubergine and cucumber crops) , fruit and flower abortion, banana shape, kernel abortion (seen in maize crops) and the disorder hen and chickens (seen in grape crops) . It can also lead to improvements in shelf life by enhancing calcium absorption into the harvested parts of a plant.
• the present invention is also useful in preventing or alleviating disease or infection in plants which occur in areas of local calcium insufficiency, e.g. root diseases, stem rots, pod rots and the like. It can also lead to improvements in calcium related problems in root tubers and stolons of below ground crops.
• the present invention is particularly advantageous as it allows improved calcium uptake and thereby improved growth habit during unusually hot or cold conditions. It allows plants to absorb calcium in temperatures outside the usual range in which calcium uptake is possible. Conventional calcium fertilisers fail to be taken up in such conditions as the plants auxin production is slowed down or halted. The present invention is particularly advantageous as improvements in calcium uptake can lead to improved food quality.
• compositions of the present invention may also comprise one or more other agriculturally acceptable component.
• examples of such components include water, additional nutrient material, weak acids, plant oils, essential oils, metabolic stimulating agents, emulsifiers, thickeners, colouring agents, suspension agents, dispersion agents, carriers or excipients and wetting agents .
• the water-soluble salt of a nutrient mineral is a water-soluble salt of another secondary nutrient, such as magnesium, sodium, chloride and sulphur, or a micronutrient, in particular, copper, cobalt, iron, manganese, boron, molybdenum, zinc, silicon and nickel.
• the compositions of the present invention are particularly advantageous if they addionally comprise zinc, iron, manganese and/or boron.
• Particular examples of water- soluble nutrient salts for inclusion in the invention include nitrates, sulphates and chlorides.
• the water-soluble nutrient salt which may be present as a solid powder, is suitably present in the composition in an amount of up to 10%v/v, preferably from 5 to 10% v/v and most preferably from 4 to 6% v/v.
• compositions of the present invention are advantageous in cases where the invention is to be used to provide the required calcium supply at low temperatures as zinc can help plants tolerate cool conditions in tender areas of new growth.
• compositions of the invention may comprise additional nutritional products and/or growth stimulants used in crop nutrition, such as seaweed extract powders, humic and fulvic acid powders and amino acid powders.
• Suitable plant oils for inclusion in the compositions of the present invention include canola oil (oilseed rape oil), soybean oil, cottonseed, castor oil, linseed oil and palm oil.
• Suitable emulsifiers for use in the compositions of the present invention include any known agriculturally acceptable emulsifier.
• the emulsifier may comprise a surfactant such as: typically alkylaryl sulphonates, ethoxylated alcohols, polyalkoxylated butyl ethers, calcium alkyl benzene sulphonates, polyalkylene glycol ethers and butyl polyalkylene oxide block copolymers as are known in the art.
• Nonyl phenol emulsifiers such as Triton N57TM are particular examples of emulsifiers, which may be used in the compositions of the invention, as are polyoxyethylene sorbitan esters such as polyoxyethylene sorbitan monolaurate (sold by ICI under the trade name "TweenTM”) .
• polyoxyethylene sorbitan esters such as polyoxyethylene sorbitan monolaurate (sold by ICI under the trade name "TweenTM"
• natural organic emulsifiers may be preferred, particularly for organic farming applications.
• coconut oils such as coconut diethanolamide is an example of such an compound. Palm oil products such as lauryl stearate may also be used.
• beet molasses provides a good natural thickener, which also acts as a colourant and a source of plant sugars and hormones.
• the thickener may be present at a concentration in the range of 0.01 to 1.00% w/w, for example in the range of 0.1 to 0.9% w/w, e.g. around 0.5% w/w.
• Suitable suspension agents which may be included in the compositions of the present invention include hydrophilic colloids (such as polysaccharides, polyvinylpyrrolidone or sodium carboxymethylcellulose) and swelling clays (such as bentonite or attapulgite) .
• hydrophilic colloids such as polysaccharides, polyvinylpyrrolidone or sodium carboxymethylcellulose
• swelling clays such as bentonite or attapulgite
• Suitable wetting agents for use in the compositions of the present invention include surfactants of the cationic, anionic, amphoteric or non-ionic type, as is known in the art.
• the composition suitably comprises a weak acid.
• weak acid refers to a weak organic acid such as acetic acid, citric acid, humic acid, fulvic acid or propanoic acid.
• the amount of weak acid, which should be included in the composition is suitably in an amount of from 0.05-3%w/w, for example at about l%w/w. These relatively small quantities are sufficient to lower the pH of the composition sufficiently to provide for the advantages discussed above.
• compositions of the present invention may further comprise one or more essential oil or active components thereof.
• the compositions may suitably contain no more than 5%w/w of essential oil, more suitably no more than 3%w/w and preferably no more than 1.5%w/w of essential oil.
• the composition may contain no more than l%w/w essential oil.
• essential oil refers to natural aromatic oils, obtainable from plants.
• Particular essential oils include tagetes oil, such as the oil obtainable Tagetes erecta and thyme oil, such as the oil obtainable from Thymus vulgaris, Wintergreen oil, Rosemary oil, garlic oil, oils from Chenopodium, Erythroxylum, Eugenia, Gaultheria, Myristica, Syzygium, Xanthophyllum, Cinnamonium, Gualtheria, Gossypium and mentha.
• essential oils for inclusion in the compositions of the invention are obtainable from in a wide range of plant families including those families listed in the following Table 1. The Table also includes examples of particular species found within each of these families Table 1 Family
• Adhatoda vasica (malabar nut)
• Ageratum conzyaides (goatweed) Artemesia vulgaris (mugwort)
• Raphanus sativus (radish)
• Convulvulaceae Convulvulus arvensis (field bindweed)
• Jatropha curcus (Physic nut)
• Trigonella foenum (fenugreek)
• Hyptis spicigera black sesame
• Osimum basilicum sweet basil
• Osimum canum American basil
• Thymus vulgaris (garden thyme)
• Cinnamomum aromaticum (cassia) Luaris nobilis (sweet bay)
• Cissampelos owariensis (Pareira brava)
• Eucalyptus citriodara (lemon-scented gum) Eucalyptus globus (Blue gum tree) Eucalyptus terreticomis Psidium guajava (guava) Syzygium aromaticum (clove)
• Nigella sativa black cumin
• Citrus limon (lemon) Citrus paradisi (grapefruit)
• Lycopersicon esculentum tomato
• Nicotiana tabacum tobacco
• Withania somnifera winter cherry
• active components thereof refers to the chemicals within the essential oil which give rise to the desired activity in plants. Such activities include metabolic stimulating effects, antimicrobial effects, insect or arachnid killing or repellent effects, antiviral and viral remediation effects.
• the oils may be present alone or combinations of different oils may be included.
• essential oils When included in the compositions of the present invention they can stimulate the metabolism of the plant to which the composition is applied, thus increasing the uptake and utilization of the calcium either by root uptake or foliar absorption.
• the essential oil or active component thereof is selected as being one, which increases plant metabolic activity in a pathway that utilizes calcium. As a result, the plant will absorb more calcium to meet its requirements, and so synergy between the components of the composition can be obtained.
• wintergreen oil, or similar oils stimulates the need for calcium and conversely calcium stimulates the need for the compounds present in wintergreen oil.
• the inclusion of wintergreen oil or a similar oil, or an active component thereof, within the composition of the present invention is, therefore, advantageous.
• the main component of wintergreen oil is methyl salicylate, and so this may be used instead of wintergreen oil itself, but other salicylate compounds such as salicyclic acid or esters thereof, in particular alkyl esters such as Ci- 10 alkyl esters may be used.
• the salicylate compound used in the composition is in the form of an essential oil as these form a readily useable source of active ingredient, which is miscible with the composition.
• oils which include salicylic acid or salicylates include wintergreen oil as explained above but also oils from Chenopodium, Erythroxylum, Eugenia, Gaultheria, Myristica, Syzygium, Xanthophyllum, Cinnamonium, Gualtheria, Gossypium and mentha.
• a further example would be to incorporate into a composition of the present invention an essential oil which stimulates pathways related to auxin production.
• an essential oil which stimulates pathways related to auxin production.
• Such essential oils could work synergistically to enhance uptake of the calcium.
• compositions of the present invention Apart from essential oils and their active components there exist other agents that may be used in the compositions of the present invention to produce advantageous metabolic stimulating effects.
• agents that may be used in the compositions of the present invention to produce advantageous metabolic stimulating effects.
• the inclusion of cytokinin in the compositions of the invention may be used to increase the requirement for the calcium.
• Essential oils supplied with the calcium can also direct the flow of the calcium supplied, by stimulating local need through upregulation of activity requiring calcium in specific tissues.
• cell division increases flow of calcium to meristems, therefore, administration of a composition according to the present invention which includes an essential oil which stimulates cell division to, for example, the leaves of plants will have the effect of increasing the calcium content in the meristems .
• oils have anti microbial or insect or arthropod and nematode repellant or killing activity, and these may be included in the compositions of the present invention.
• the agricultural compositions of the present invention may be applied to plants, in particular crop plants, in any conventional manner, e.g. by soil or foliar application. They may be applied to root systems, stems, seeds, grains, tubers, flowers, fruit, etc. as required. Examples of means of application include spraying, e.g. by means of an electrostatic or other conventional sprayer, or drip irrigation methods or fertigation systems, which involve application directly to the soil, so as to allow calcium uptake through the roots.
• compositions of the present invention may be adapted for the means of application, e.g. prepared in a form suited to the required means of application.
• the compositions of the present invention may take the form of liquid or solid concentrates, which require dilution before application.
• the compositions may be formed into, for example, water dispersible granules, slow or fast release granules, soluble concentrates, oil miscible liquids, ultra low volume liquids, emulsifiable concentrates, dispersible concentrates, oil in water, and water in oil emulsions, micro-emulsions, suspension concentrates, aerosols, capsule suspensions and seed treatment formulations.
• Aerosol versions of the compositions may be prepared using a suitable propellant, for example n-butane.
• compositions of the present invention may be prepared using any conventional techniques and methods.
• Granules may be, for example, formed either by granulating a composition of the present invention alone or with one or more powdered solid diluents or carriers.
• Granules of the water-soluble calcium salt may be prepared onto which the auxin mimic, e.g. DPU, may be coated by any suitable conventional means.
• Dispersible concentrates may be prepared by mixing a composition of the present invention in water or an organic solvent, such as a ketone, alcohol or glycol ether.
• Suspension concentrates may be prepared by combining the compositions of the present invention in a suitable medium, optionally with one or more dispersing agents, to produce a suspension.
• a suitable medium optionally with one or more dispersing agents, to produce a suspension.
• One or more wetting agents may be included in the suspension and a suspending agent may be included to reduce the rate of settling.
• the present invention provides a formulation for administration to plants or to the environment of plants, the formulation comprising a composition according to the present invention and a medium in which the composition may be dispersed or dissolved.
• Suitable mediums include any known dispersants or solvents for the composition, for example water or a water miscible liquid, such as ⁇ -propanol .
• the medium is preferably such as to provide formulations that may be used in non-pressurised, hand- actuated spray pumps.
• the medium is preferably a solvent and most preferably water.
• a formulation according to the present invention may contain from 10-20% v/v of the composition of the present invention with the remainder being dispersant or solvent, e.g. water.
• the present invention provides a method for supplying calcium to plants, which method comprises applying to plants or to the environment of plants a composition or formulation according to the present invention.
• the present invention is suitable for use on most crops, but in particular can be used for the treatment of greenhouse crops, vegetables, and fruit crops.
• the present invention has the following specific uses. When applied to tubers, flowers or fruit it can alleviate or prevent blossom end rot and Bitter Pit in apples. When applied to root systems, such as bulb onions it can minimise root disease and reduce root exudates. When applied to stems, in particular Cocoa plant stems, it can minimise Black Pod and Frosty Pod. When applied to basal stem roots, e.g. those of oil palms, it can increase resistance to disease. It is also of use in the cultivation of foliage crops such as tea and of seed or grain crops such as rice, wheat or cereal.
• composition or formulation applied in any particular situation will vary depending upon a number of factors such as the nature of the crop and the level of calcium required. Typically, where the composition or formulation is in the form of a solution the amount of solution applied is sufficient to provide a solution concentration sprayed to runoff-rate of between 2ml/lt and 20ml/lt.
• the invention provides the use of a composition or formulation according to the present invention as a fertilizer, for administration to crops at a rate of from 1 to 30 litres per hectare, and preferably from 1 to 10 litres per hectare.
• compositions and formulations may be used either alone (and in this case, they may be suitable for organic growers) or in conjunction with other agrochemicals such as fungicides, insecticides or acaricides.
• a method for enhancing the uptake of calcium by- plants comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water- soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• a method for increasing cellular integrity by preventing areas of local calcium deficiency comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• a method for reducing physiological disorders associated with calcium insufficiency comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• a method for improving shelf life of a harvested crop by enhancing calcium absorption into the harvested parts of a plant comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water- soluble salt of calcium and (ii) an auxin mimic that is anaryl substituted urea.
• a method for preventing or alleviating disease or infection in plants which occur in areas of local calcium insufficiency comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• a method for improving calcium uptake and/or growth habit during unusually hot or cold conditions comprises applying to the plants or to the environment thereof a composition which comprises: (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea.
• compositions or a formulation according to the present invention as a fertilizer for administration to crops .
• the composition was prepared by adding water to a vessel, ensuring that the temperature of the water is at least 20 0 C. This was then stirred with a mixer to achieve a reasonable vortex (approx 100 - 200rpm) , upon which citric acid was added and mixed until dissolved. Thereafter, seaweed extract was added to the vessel, and again, mixing was continued until it had dissolved. Thereafter diphenylurea (DPU) in ethanol solution was added to the vessel and mixed for 10 minutes until dissolved. Next, the calcium chloride liquor was added to the vessel, and mixed until dissolved, and finally the beet molasses was added to the vessel and the solution mixed for 30 minutes before packaging.
• DPU diphenylurea
• a trial was set up to evaluate what (if any) difference the application of a formulation based on the present invention made to the growth of crops during low temperatures .
• Formulation 1 (Inventive)
• Control the same formulation without DPU incorporated
• the formulations are shown below: Formulation 1 (Inventive) Formulation 2 (Control;
• Each formulation was applied to protected strawberry plants grown in a poly-tunnel on a farm in Jordan. Application was as a foliar spray (ImI/L spray solution, sprayed to runoff) . The plants were studied during a period of poor weather conditions (abnormally cold) , and the plants were evaluated to see what difference (if any) the formulations made to the growth of the plants. Two applications of each formulation were made three weeks apart. The temperature in the day was between 8-12 0 C and the temperature at night was between -2-6 0 C (for 7 nights the temperature was below zero degrees centigrade) .
• the application of a formulation according to the present invention made a clear and obvious difference in the growth of strawberry plants during cold stress.
• the application of the control formulation did not prevent damage to the strawberry plant caused by cold stress/ such as necrosis of leaf margins, abortion of flowers and browning of developing fruit. Colour forms more slowly during cold stress conditions. Relieving cold stress can improve it.
• the Invention Formulation clearly- improved colour formulation.
• the aim of this trial was to determine the effect of the present invention on plant development in Lettuce (Lactuca sativa sp) using applications at predetermined intervals, and also to evaluate the health of the plants following application and to compare the yield of the treated plot with the control plot.
• the trial plot was divided into 4 sections. Conventional fertilizer and pesticide products were applied to the whole plot as a general treatment. The plot was divided into two
• Plot 1 comprises: PL 1 (treated with a formulation according to
• Plot 2 comprises: PL 2 (treated with a formulation according to
• the growth in the PL 1 and PL 2 zones was greater when compared with the measurements from the Control 1 and Control 2 zones.
• tip burn manifests itself as a burn at the tip of the youngest leaves, resulting from poor translocation of calcium to the affected tissues.
• Environmental factors such as high temperatures and low relative humidity and agricultural factors such as salinity (soil, water, excess nitrogen and potassium deficiency, etc.), calcium-poor soils and water stress, are directly responsible for tip burn.
• Leaves with tip burn have an unpleasant appearance and the edge of the damaged leaf is weaker and subject to rotting.
• the salinity of the water in the area in which the trial was held is very high. In Plot 1 ridge soil and plants were swept along as a result of a heavy storm during the trial.
• PLl subplot with 10% tip burn after counting the plants at random.
• Control 1 subplot with 15% tip burn after counting the plants at random.
• PL2 subplot with 10% tip burn after counting the plants at random.
• Control 2 subplot with 10% tip burn after counting the plants at random.
• Plot 1 Cutting carried out in week 51, evaluation 9 weeks later.
• PLl subplot with 80% of lettuce hearts in good condition. Of this percentage 40% are fit for consumption, the rest are suffering from rot.
• Control 1 subplot with 40% of lettuce hearts in good condition. Some of the remaining percentage were suffering from rot.
• PL2 subplot with 20% of lettuce hearts in good condition. Some of the remaining percentage were suffering from rot. Control 2: subplot with 0% lettuce hearts in good condition.
• the increase in plant growth observed in the plants treated according to the present invention is significant. It could allow the cutting date (i.e., harvesting) to be brought forward.
• the plants in Plot 1 treated according to the invention had a greater resistance to the disease Tip Burn.
• Inventive treatment is 5% Calcium with DPU (formulation according to Example 1)
• Control is 5% Calcium no DPU
• the formulation according to the present invention reduced bitter pit, a disorder caused by calcium deficiency to a greater level than with a similar formula without DPU.
• the formulation according to the invention gave twice the level of reduction of Bitter Pit in apples that is usually seen with other conventional Calcium fertilisers, despite using only one application (standard practice is 20 applications) , and having a lower calcium content (most products have>7% Ca) .
• Cucumber plants (Cucumis sativa) - variety ⁇ Edona'- were cultivated in a greenhouse according to local agricultural practices. The crop was planted at the test site at an equivalent standard plant density of 25,000 plants per hectare.
• test design was a randomised complete block with 3 replicates for each treatment.
• Each 4.8m 2 plot consisted of two rows, 2.4m in length and 2.0m apart. Twelve cucumber plants were planted in each plot. The distance in between the plots and the field edge was at least 3m.
• a reference fertiliser was applied every seven days within the drip irrigation system ( ⁇ fertigation' ) .
• the emitter spacing was 20cm and the flow rate of each emitter was IL per hour.
• the total amount of nitrogen applied over the growing season within the reference fertiliser programme was 300 kg N/ha.
• the distribution of nitrogen applied each week (from 2 weeks after planting) in the form of a reference fertiliser is summarised below.
• the test comprised treatments summarised below.
• test item for treatment 1 was applied alongside the reference fertiliser at each of the 11 application dates.
• the amount of formulated product for each plot was measured, diluted in IL of water and then carefully applied along the irrigation line using the emitter system.
• Quantitative assessments of total yield (number and weight of fruits) were made at each harvest date. Eleven successive harvests were taken between the seventh and eleventh weeks after planting.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• General Health & Medical Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Inorganic Chemistry (AREA)
• Dentistry (AREA)
• Agronomy & Crop Science (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Botany (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Fertilizers (AREA)

Priority Applications (12)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34855693

Family Applications (1)

Country Status (20)

Cited By (3)

Families Citing this family (16)

Family Cites Families (24)

• 2005
  • 2005-06-17 GB GBGB0512336.9A patent/GB0512336D0/en not_active Ceased
• 2006
  • 2006-06-15 BR BRPI0612250-7A patent/BRPI0612250B1/pt active IP Right Grant
  • 2006-06-15 HU HUE06744220A patent/HUE037999T2/hu unknown
  • 2006-06-15 MX MX2007015674A patent/MX2007015674A/es active IP Right Grant
  • 2006-06-15 AU AU2006258862A patent/AU2006258862B2/en active Active
  • 2006-06-15 CA CA2612077A patent/CA2612077C/en active Active
  • 2006-06-15 NZ NZ564742A patent/NZ564742A/en unknown
  • 2006-06-15 WO PCT/GB2006/002185 patent/WO2006134361A2/en not_active Ceased
  • 2006-06-15 ES ES06744220.2T patent/ES2653530T3/es active Active
  • 2006-06-15 CN CN2006800296362A patent/CN101243026B/zh active Active
  • 2006-06-15 JP JP2008516405A patent/JP2008543714A/ja active Pending
  • 2006-06-15 PL PL06744220T patent/PL1899283T3/pl unknown
  • 2006-06-15 EA EA200800074A patent/EA014351B1/ru not_active IP Right Cessation
  • 2006-06-15 US US11/917,268 patent/US7740680B2/en active Active
  • 2006-06-15 PT PT67442202T patent/PT1899283T/pt unknown
  • 2006-06-15 EP EP06744220.2A patent/EP1899283B1/en active Active
• 2007
  • 2007-12-19 ZA ZA200711089A patent/ZA200711089B/xx unknown
  • 2007-12-20 CR CR9620A patent/CR9620A/es not_active Application Discontinuation
• 2008
  • 2008-01-07 MA MA30550A patent/MA29614B1/fr unknown
  • 2008-01-16 EC EC2008008109A patent/ECSP088109A/es unknown

Also Published As

Similar Documents

Legal Events