WO2017026957A1 - Formulation d'oxadiazone sans phytotoxicité pour le riz - Google Patents

Formulation d'oxadiazone sans phytotoxicité pour le riz Download PDF

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Publication number
WO2017026957A1
WO2017026957A1 PCT/TR2016/000117 TR2016000117W WO2017026957A1 WO 2017026957 A1 WO2017026957 A1 WO 2017026957A1 TR 2016000117 W TR2016000117 W TR 2016000117W WO 2017026957 A1 WO2017026957 A1 WO 2017026957A1
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Prior art keywords
formulation
weight
oxadiazon
reactant
rice
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PCT/TR2016/000117
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English (en)
Inventor
Yildiztekin TUNCAY
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Entovest İlaç Ki̇mya Ve Teknoloji̇ Araştirma Merkezi̇ Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇
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Publication of WO2017026957A1 publication Critical patent/WO2017026957A1/fr

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    • 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
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms

Definitions

  • Rice is the basic nutritional source for 40% of the world population and a staple food providing 80% of the caloric intake of approximately 2.7 billion people. Cultivated largely in tropical and temperate regions, 90% of rice is grown and consumed by Asian countries.
  • Rice is grown with five different cultivation systems in the world depending on the water regimen. Different types of rice cultivated using these systems are irrigated rice, rain- fed lowland rice, deep-water rice, upland rice and coastal wetland rice considering the area of cultivation.
  • rice cultivation system is based on continuous irrigation; and rice is cultivated on waterlogged field in this system.
  • the surface of the field is covered in water starting from planting until there is 20 days till the harvest.
  • the height of water is increased gradually depending on the growth of the plant and kept around 15 cm during maximum growth stage.
  • Methods of planting used in irrigated rice cultivation system in the world vary depending on the economic, ecological and social conditions of countries. Such methods are direct seeding in water (by broadcasting, fertilizer distributors and airplanes), drilling in dry land, hill planting and transplanting (by hand or drilling).
  • Rice is generally grown in water-fed parcels (beds). Rice planting is performed by planting the seeds into dryland or wetland. Difference in such planting method results from several factors such as regional practices, climatologic conditions, availability or unavailability of adequate water and geographical conditions.
  • the underlying problem in weed management is that the herbicides used against the same group of weeds are applied continuously throughout years. Such non-rotation application, in combination with unchanging application method and unchanging application period, results in resistance to herbicides.
  • the present invention is a new formulation and a new method developed with oxadiazon, a different herbicide molecule, to eliminate such treat.
  • the present invention is intended to eliminate the problems experienced in the prior art of oxadiazon, which is a chemical known for weed management in paddy fields in the agriculture industry but not used due to phytotoxicity in paddy fields and accumulation in soil, through capsule suspension formulation of this molecule and to use this formulation in the relevant industry.
  • Oxadiazon is an herbicide that is a chlorophyll inhibitor and it chemical name is 5-tert-butyl-3- (2,4-dichloro-5-isopropoxyphenyl)-l,3,4-oxadiazol-2(3H)-one.
  • Oxadiazon is a highly persistent herbicide with a half life of 3-6 months. This herbicide is strongly adsorbed on soil colloids, and it is not easily degradable. Oxadiazon is not considered to be volatile.
  • oxadiazon emulsion concentrate (EC), Water-soluble Powder (WP), Granule (G) and other solid or liquid formulations "other than the capsule formulation"
  • EC emulsion concentrate
  • WP Water-soluble Powder
  • G Granule
  • other solid or liquid formulations "other than the capsule formulation” have been used in management of many weed types in cultivation of various crops aside from rice.
  • oxadiazon was mostly used on lawns and in cultivation of onion, clove and many other agricultural products.
  • Oxadiazon is an herbicide that rather has an effect on the seed.
  • solid or liquid formulations other than the oxadiazon capsule formulation subject to the invention have been used in rice cultivation, even if not commonly used.
  • the active agent is completely free at the time it reaches the area of application.
  • the product is not suitable for weed management in rice cultivation.
  • the effect of the free molecule that lasts for months means an attack dose that lasts for months; and such attack dose is harmful to the rice as much as the weed. Therefore, conventional formulation types of such products are not used unless rice farmers are completely out of solutions.
  • the oxadiazon that is found in a free state after Oxadiazon EC is applied is adsorbed on the upper colloids.
  • Oxadiazon found in the upper layers of soil contacts the rice seeds during planting the rice.
  • Oxadiazon that is strongly adsorbed on the upper layers of the soil is completely in a free state. It is in direct contact with rice seeds upon planting and such contact has an attack dose effect, which results in loss of germination strength of the rice and its inability to germinate.
  • bensulfuron methyl, penoxsulam, bispyribac Na + and other active agents from ALS group were used to manage Cyperus spp, Echinochloa spp, Digitaria sanguinalis (L.)Scop and Diplachne spp. Varying depending on the herbicides, the application period of such active agents is generally post-emergence when the rice has 2-3 to 6-8 leaves.
  • Oxadiazon Emulsion Concentrate (EC) formulation severely damaged the rice and intolerable levels of phytotoxicity were observed in the cultivation fields where oxadiazon was used.
  • the soil was leached for at least 2 times after application in order to prevent the phytotoxicity in rice; however, the observed levels of mortality of rice seeds were intolerable despite the leaching process.
  • the starting dose was increased in order to prevent the amount of oxadiazon, which was lost due to leaching and conditioning, from dropping below the effective dose, and this resulted in economic loss and unnecessary ecological pollutions.
  • this may prevent germination of the rice seeds.
  • leaching and conditioning processes are not performed using the correct techniques, high doses of oxadiazon will remain the soil and cause germination of the rice stop completely.
  • the leaching is performed generally after 4 days of applying the herbicide and the planting is performed after conditioning for 6 days.
  • the oxadiazon EC in soil reduces or completely depletes due to leaching during the conditioning after day 4 or later. This results in germination of new weed seeds in the period of 6 days.
  • only the weed seeds to germinate in the beginning are managed and the weed seeds to emerge later cannot be controlled. In other words, the effect does not last long.
  • the inventors aim at developing a method that will allow application of the capsule suspension (CS) formulations containing oxadiazon active agent without causing phytotoxicity and damage to different species of plants by drifting in the soil.
  • CS capsule suspension
  • the inventors also aim to develop a formula that will eliminate the disadvantages of the herbicides used in weed management in rice cultivation.
  • the inventors aim at developing a product that will manage the weeds and will be economical in terms of the environment, efficiency, cost and labor by means of developing a formula to manage the weeds at germination stage by using the oxadiazon active agent, to which the weeds have no resistance, prior to transplanting.
  • the formulations according to the present invention prevent use of generally petroleum-based solvents and emulsifiers that are released from rice parcels into underground and surface waters.
  • the inventors have discovered that the weed problem in rice cultivation is managed, the rice seeds are not damaged and the yield of the cultivated field is increased by using the capsule suspension form of Oxadiazon, the details of which are described below.
  • the problem that the invention aims to solve is the inability to use oxadiazon due to phytotoxicity.
  • the invention relates to the development of oxadiazon capsule formulation and the method of application of the technology developed in weed management in rice cultivation.
  • Oxadiazon CS formulation is used in management of weeds indicated in this specification, for example Echinochloa spp. and particularly Echinochloa crus-galli (L Beauv.), Cyperus spp. and particularly Cyperus difformis L., Alisma spp. and particularly Alisma plantago-aquatica L., Echinochloa spp. and particularly Echinochloa oryzoides (Ard.) F. and other narrow and large leaved weeds.
  • Echinochloa spp. and particularly Echinochloa crus-galli (L Beauv.) Cyperus spp. and particularly Cyperus difformis L.
  • Alisma spp. and particularly Alisma plantago-aquatica L. Echinochloa spp. and particularly Echinochloa oryzoides (Ard.) F. and other narrow and large leaved weeds.
  • oxadiazon emulsion concentrate (EC), Water-soluble Powder (WP), Granule (G) and other conventional formulations
  • EC emulsion concentrate
  • WP Water-soluble Powder
  • G Granule
  • other conventional formulations emulsion concentrate
  • solid or liquid formulations other than the capsule formulation of oxadiazon have been tried in rice cultivation, even if not commonly used.
  • major phytotoxicity takes place in rice during applications both before and after planting and the development of rice stops for almost one month. Therefore, rice farmers do not use the conventional formulation types of this molecule unless they are completely out of solutions.
  • the present invention has both eliminated the phytotoxicity problem and made it possible to obtain greater yields at lower doses. Such advantages have been obtained by using the capsulation formulation of the Oxadiazon molecule subject to the present invention.
  • the invention relates to the problem-free use of oxadiazon and was discovered by using the CS formulation type of Oxadiazon in weed management having integrated the formulation with a new method of application.
  • the present invention relates to the capsule suspension form of the oxadiazon molecule suitable for use in rice cultivation fields.
  • the present invention relates to the capsule suspension formulations that contain at least one inactive agent in addition to the oxadiazon.
  • the present invention comprises the encapsulation of the active agent oxadiazon with all of the conventional methods to obtain the capsule suspension formulation.
  • the table below describes the preferred percentage and contents and interfacial polymerization as the preferred technique without limiting the scope of the invention.
  • emulsifier or emulsifiers may be from ionic, anionic and nonionic groups or a combination of such groups.
  • Emulsifier used in the method of the present invention may be one or more selected from the group of amine ethoxylates, ethylene oxide (EO) / propylene oxide (PO) block polymers, ether sulfates, saturated alcohol alkoxylates, sorbitan ester ethoxylates, tributylphenol ethoxylates, phosphate esters, tristyrylphenol ethoxylates, sulfonation products, polycondensation products, nonylphenol ethoxylates, alkyl benzene sulfonates, castor oil ethoxylates, EO/PO alkoxylation products, saturated alcohol ethoxylates, olein sulfonates and sulfosuccinate.
  • EO ethylene oxide
  • PO propylene oxide
  • emulsifiers may be used in the same or different amount.
  • Preferred emulsifiers used in the formulation are tristyrylphenol ethoxylates and nonylphenol ethoxylates.
  • the preferred ratio of the emulsifier mix is 1 :1.
  • the solvent mentioned in the Table is the liquid medium in which the Oxadiazon active agent, which is in a solid state under normal conditions, is solved. Solvents, which are not soluble in water, are used within the scope of the invention.
  • the solvents that may be used in the formulation subject to the invention may be selected from the group of xylene, benzene, toluene, cyclohexane, solvesso 100, solvesso 150, solvesso 200 and exxsol series hydrocarbons in addition to herbal oils derived from oily seeds and ethyl and methyl esters thereof and herbal terpenes.
  • the solvent used in the method of the present invention may be one selected from the group mentioned above or a combination of at least two or more solvents selected from the same group. In case of using two different solvents, such solvents may be used in same or different amounts.
  • the preferred solvent used in the formulation is xylene.
  • antioxidant preservative indicated in the Table is butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA).
  • the antifreeze indicated in the Table is the glycol derivative additives that prevent freezing at low temperatures, which is an application known in water-based pesticide formulations.
  • the antifreeze used in the formulations according to the present invention may be selected from the group of ethylene glycol, monopropylene glycol, dipropylen glycol, diethylene glycol and glycerin.
  • the preferred antifreeze used in the formulation is monopropylene glycol.
  • the reactant 1 indicated in the Table is the organic compounds containing isocyanate functional group.
  • the function of the reactant 1 in the formulation is to create a polyuria capsule wall upon being polymerized in the emulsion droplets-water interface with the help of catalyzer solution after emulsification of the Oxadiazon prepared with the oil phase.
  • the reactant 1 may be selected from the group of methyl isocyanate, methylene diphenyl diisocyanate (MDI), hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI), naphthalene diisocyanate (NDI), methylene bicyclohexyl isocyanate (HMDI) or isoprene diisocyanate (IPDI).
  • MDI methylene diphenyl diisocyanate
  • HDI hexamethylene diisocyanate
  • TDI toluene diisocyanate
  • NDI naphthalene diisocyanate
  • HMDI methylene bicyclohexyl isocyanate
  • IPDI isoprene diisocyanate
  • the reactant 1 and reactant 2 indicated in the Table are the amines that create a polyurea capsule shell after they enter into polymerization reaction with the reactant 1 that is the isocyanate group.
  • the reactant 2 and reactant 3 are premixed together in water to prepare the catalyzer solution.
  • the catalyzer solution prepared is slowly added onto the Oxadiazon oil base emulsified in water to start the reaction to create the polyuria capsule shell.
  • the amines used in the synthesis of the polyuria capsule shell may be from primary, secondary or tertiary amine groups.
  • reactant 2 and reactant 3 that may be used within the scope of the present invention are selected from the group of ethylamine, ethylene diamine, diethylene triamine, triethylene tetramine, dimethylamine, trimethylamine, diethylamine, diisopropylamine, dimethylaminopropylamine, triisopropylamine.
  • Reactant 2 and reactant 3 may be the same or two different molecules selected from the abovementioned group.
  • the stabilizer indicated in the Table is the additives that may be used to adjust the viscosity of the formulation after the polymerization reaction ends.
  • the stabilizer used in the formulation of the present invention may be selected from the group of xanthan gum, guar gum, gum Arabic, carboxymethyl cellulose, methylcellulose, hydroxypropyl cellulose.
  • the preferred stabilizer used in the formulation is xanthan gum.
  • the preferred carrier indicated in the table is water.
  • Antifoam and antimicrobial preservative are the additives that are commonly used in pesticide formulations.
  • the preferred antifoam used in the formulation is silicone-based antifoam.
  • the amount of oxadiazon used is 0.001 - 85% by weight, preferably 0.1 - 70% by weight, most preferably 1 - 60% by weight and for example 20% by weight.
  • the amount of emulsifier mix used is 0.01 - 35% by weight, preferably 0.1 - 30% by weight, most preferably 3 - 15% by weight and for example 6% by weight.
  • the amount of solvent used is 1 - 60% by weight, preferably 5 - 40% by weight, most preferably 10 - 35% by weight and for example 22% by weight.
  • the amount of antimicrobial preservative used is 0.0001 - 59% by weight, preferably 0.001 - 40% by weight, most preferably 0.1 - 30% by weight and for example 0.3% by weight.
  • the amount of antifoam used is 0.001 - 60% by weight, preferably 0.1 - 40% by weight, most preferably 0.1 - 30% by weight and for example 1% by weight.
  • the amount of antifreeze used is 0.01 - 60% by weight, preferably 0.05 - 30% by weight, most preferably 0.1 - 20% by weight and for example 4% by weight.
  • the amount of reactant 1 used is 0.001 - 70% by weight, preferably 0.05 - 30% by weight, most preferably 0.1 - 20% by weight and for example 5% by weight.
  • the amount of reactant 2 used is 0.001 - 60% by weight, preferably 0.05 - 30% by weight, most preferably 0.1 - 20% by weight and for example 2% by weight.
  • the amount of reactant 3 used is 0.001 - 70% by weight, preferably 0.05 - 30% by weight, most preferably 0.1 - 20% by weight and for example 1% by weight.
  • the amount of stabilizer used is 0.0001 - 30% by weight, preferably 0.0005 - 25% by weight, most preferably 0.001 - 20% by weight and for example 0.08% by weight.
  • inactive agents found in the Oxadiazon CS formulation to be used in the method of the present invention, different inactive agents may also be used. Such additional inactive agents may be selected from the group of viscosity modifier, density modifier, distributor, suspending agent, solvent, etc.
  • the viscosity modifier may be selected from a group including but not limited to guar gum, xanthan gum, carrageenan, alginate, hydroxypropyl methylcellulose, etc.
  • the density modifier may be selected from a group including but not limited to carrageenan, pectin, gelatin, polyethylene glycol, polyvinyl alcohol, hydroxypropyl methylcellulose, carboxymethyl cellulose, etc.
  • the distributor may be selected from a group including but not limited to ammonium lauryl sulfate, sodium lauryl sulfate, sodium dodecyl sulfate, sodium stearate, polyethylene glycol, etc.
  • the solvent may be selected from a group including but not limited to water or organic solvents, for example ethanol, methanol, isopropyl, propanol, butylene, hexane, heptane, benzene, toluene, xylene, Solvesso, triethylamine, dimethylsulfoxide, dimethylformamide or a combination thereof.
  • water or organic solvents for example ethanol, methanol, isopropyl, propanol, butylene, hexane, heptane, benzene, toluene, xylene, Solvesso, triethylamine, dimethylsulfoxide, dimethylformamide or a combination thereof.
  • the present invention relates to a production method to be used to prepare the capsule suspension formulation of oxadiazon.
  • the subject production method comprises the following steps:
  • the present invention relates to a method to be employed during application of the formulations of oxadiazon capsule suspension to paddy fields.
  • the inventors have aimed to develop a method of application that allows use of oxadiazon molecule by means of encapsulation without damaging the rice in paddy fields.
  • the method according to the present invention comprises the following steps:
  • CS Oxadiazon capsule suspension
  • the soil is watered and the seeds are transplanted minimum 24 hours, preferably minimum 72- 168 hours after applying the formulation.
  • the inventors have observed that the rice seeds are not in direct contact with the encapsulated oxadiazon in high doses, and thus, germination and growth problems of the rice resulting from high doses of active agent are eliminated.
  • the oxadiazon capsules contacting the weed seeds in the soil will manage the weed seeds that will emerge gradually.
  • the present invention is also a method regarding application of the capsule suspension formulation of oxadiazon molecule in order to dispose of weeds in paddy fields comprising (i) application of capsule suspension (CS) formulation of oxadiazon to the area to be cultivated right after harrowing the soil before transplanting the rice, (ii) irrigation of the area to be cultivated at least 24 hours after applying the capsule suspension formulation of oxadiazon and (iii) transplanting the seeds minimum one (1) day, preferably four (4) days, most preferably six (6) days after irrigating the area to be cultivated.
  • CS capsule suspension
  • Oxadiazon CS is added in 20-40 liters of water per decare. The device should be calibrated for dose adjustment.
  • the soil should be irrigated minimum one (1) day, preferably four (4) days after applying the Oxadiazon CS; and the seeds should be transplanted minimum one (1) day and most preferably 6 days after the water is released.
  • Drying durations should not be kept long so that oxadiazon CS can show full performance.
  • rice seeds put in a container are soaked in water to break the coats of the seeds.
  • the said container may be a sack, wooden container, plastic container, etc. Breaking of the coats is not necessarily performed.
  • the dose of the active agent oxadiazon (for CS formulation) to be applied to the area to be cultivated may be between 5 g a.i/da and 300 g a.i/da, preferably 25 g a.i/da and 100 g a.i/da, and most preferably 30 g ai/da and 85 g a.i/da.
  • the soil may be harrowed before applying the Oxadiazon CS formulation.
  • the Oxadiazon active agent to be used within the scope of the present invention which is in the form of emulsion concentrate (EC), may also be in the form of encapsulated suspension (MC / ES / CS).
  • the Oxadiazon active agent to be used within the scope of the present invention which is in the form of microcapsule suspension (CS) that provides controlled release, may also be in the form of other formulation types that provide controlled release being microcapsule suspension for seed treatment (CF), microcapsule concentrate (MC), microcapsule + oil-in-water emulsion (ZW) mixture, microcapsule + suspension concentrate mixture (ZC) or microcapsule + suspension concentrate + oil-in-water emulsion mixture (ZE).
  • the dosage and form of the active agent which is not limited to those mentioned herein, may be in other solid or liquid formulations.
  • the present invention comprising the capsule suspension formulation of Oxadiazon, also comprises other water-based mono and multi formulations.
  • the present invention may be used in other agricultural or non-agricultural areas where phytotoxicity or effectiveness problems are experienced in use of oxadiazon molecule.
  • the invention also comprises the application in weed management for different agricultural produces and on non-agricultural areas such as lawns.
  • the present invention manages weeds, in particular Cyperus spp. and certain Echinochloa species by >90%, the yield obtained from the areas where the invention is applied is greater than that of other areas.
  • the present invention relates to a method intended for the application of capsule suspension formulation of oxadiazon for application of Oxadiazon molecule in paddy fields, comprising:
  • planting used within the scope of the present invention also stands for popped or cracked seeds.
  • Such effectiveness was obtained at a lower dose, at least 20% less than the dose of the emulsion concentrate formulation of oxadiazon.
  • the paddy field was irrigated at least 24 hours and preferably 96 hours after application of Oxadiazon CS; and the rice seeds ready to germinate were broadcasted onto the surface of the water preferably 114 hours after such process.
  • EW used within the scope of the present invention stands for the formulation of oil-in-water emulsion.
  • the abbreviation ES used within the scope of the present invention stands for the formulation of emulsion for seed treatment.
  • the abbreviation SE used within the scope of the present invention stands for the formulation of suspo-emulsion.
  • the abbreviation ME used within the scope of the present invention stands for the formulation of micro-emulsion.
  • the abbreviation MC used within the scope of the present invention stands for the formulation of micro-emulsion.
  • the abbreviation CF used within the scope of the present invention stands for the formulation of capsule suspension for seed treatment.
  • the abbreviation SC used within the scope of the present invention stands for the formulation of suspension concentrate (fluid concentrate).
  • the abbreviation CS used within the scope of the present invention stands for the formulation of capsule suspension.
  • the abbreviation ZC used within the scope of the present invention stands for the formulation composed of a mixture of CS and SC formulations.
  • the abbreviation ZE used within the scope of the present invention stands for the formulation composed of a mixture of CS and SE formulations.
  • the abbreviation ZW used within the scope of the present invention stands for the formulation composed of a mixture of CS and EW formulations.
  • At least one different active agent can also be used in addition to the oxadiazon active agent.
  • Such other active agent can be used in combination with oxadiazon at the same time or at another stage of the production.
  • Such second active agent may be one or a combination selected from the group of glyphosate, paraquat, glufosinate, butachlor, pretilachlor, fenclonine, clomazone, pendimethalin, oxadiargyl, bispyribac sodium, fenoxaprop, ethoxysulfuron, metsulfuron, chlorimuron, safener, azimsulfuron, phenoxylane.
  • the formulation according to the invention may be used in management of weeds that cause great loss in yield, including but not limited to Echinochloa crus-galli (L Beauv.) and Echinochloa spp., Cyperus difformis L. and Cyperus spp., Alisma plantago-aquatica L. and Alisma spp., and Echinochloa oryzoides (Ard.) F.
  • the application of the invention also comprises other narrow and large leaved weeds.
  • the invention was considered successful for passing the limit value of 90% at 30 g a.i/da dose. No measures such as leaching were taken after application. No negative results were obtained in germination compared to the control groups.
  • the oxadiazon formulation subject to the invention gives better results than the formulation of the prior art known for at least one type of weed.
  • a mild phytotoxicity was observed at the selectivity dose of the invention for phytotoxicity and rice germination, and such phytotoxicity ended within 7 days. At the end of day 30, no difference was observed between the paddy field on which the herbicide was not applied and the paddy field on which the selectivity dose of the invention was applied. Leaching was not performed after application of the selectivity dose.
  • the oxadiazon EC herbicide of the prior art was successful in managing certain weeds at the dose of 37.5 g a.i/da.
  • the soil was leached twice (2) after the application.
  • the rice showed growth deficiency of 15 days, and the yield loss during the harvest was 13%.
  • the dose 60 g a.i/da which is the selectivity dose for the invention, was also considered as the selectivity dose for the oxadiazon EC of the prior art; the rice did not emerge despite the leaching operation performed twice (2) after the application. Since rice will not emerge in case of any possible application of high doses by the farmer, it was concluded that application of oxadiazon EC would not be suitable for weed management in rice cultivation.
  • Tristyrylphenol ethoxylate nonylphenol ethoxylate (1 :1) 6
  • An emulsifiable oxadiazon solution is prepared by mixing the Oxadiazon with xylene, butylated hydroxytoluene and butylated hydroxyanisole and Methyl isocyanate,
  • Tristyrylphenol ethoxylate nonylphenol ethoxylate (1:1), monopropylene glycol, butylated hydroxytoluene and butylated hydroxyanisole and antifoam are added in water to prepare the water phase of the emulsion.
  • the oxadiazon solution prepared is emulsified in water phase with the help of a high-speed mixer.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
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  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La présente invention est destinée à éliminer les problèmes rencontrés auparavant avec l'oxadiazone, qui est un produit chimique connu pour la gestion des mauvaises herbes dans les rizières dans l'industrie agricole mais qui n'est pas utilisé en raison de la phytotoxicité dans les rizières et de son accumulation dans le sol, grâce à la formulation en suspension en capsule de cette molécule, et à permettre l'utilisation de cette formulation dans l'industrie concernée.
PCT/TR2016/000117 2015-08-13 2016-08-15 Formulation d'oxadiazone sans phytotoxicité pour le riz WO2017026957A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2015/10063 2015-08-13
TR2015/10063A TR201510063A2 (tr) 2015-08-13 2015-08-13 Çelti̇kte fi̇totoksi̇si̇te sorununun gi̇deri̇lmesi̇ i̇çi̇n oxadiazon molekülünün güvenli̇ formülasyonunun ve uygulama yöntemi̇ni̇n geli̇şti̇ri̇lmesi̇

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Cited By (1)

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WO2020233646A1 (fr) * 2019-05-21 2020-11-26 江苏龙灯化学有限公司 Composition herbicide contenant des microcapsules, procédé de préparation de celle-ci et utilisation de celle-ci

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2000060944A1 (fr) * 1999-04-13 2000-10-19 Aventis Cropscience S.A. Compositions herbicides pour les rizieres
US20150208653A1 (en) * 2014-01-27 2015-07-30 Monsanto Technology Llc Aqueous herbicidal concentrates

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