WO2020093749A1 - Composition fongicide contenant du terpène et du chitosane, son procédé de préparation et son utilisation - Google Patents

Composition fongicide contenant du terpène et du chitosane, son procédé de préparation et son utilisation Download PDF

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WO2020093749A1
WO2020093749A1 PCT/CN2019/100741 CN2019100741W WO2020093749A1 WO 2020093749 A1 WO2020093749 A1 WO 2020093749A1 CN 2019100741 W CN2019100741 W CN 2019100741W WO 2020093749 A1 WO2020093749 A1 WO 2020093749A1
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chitosan
parts
terpene alcohol
terpineol
alcohol
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PCT/CN2019/100741
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English (en)
Chinese (zh)
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韦茂春
易芬远
王超
杨淑兰
李略
阮恒
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广西化工研究院有限公司
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Publication of WO2020093749A1 publication Critical patent/WO2020093749A1/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
    • A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/06—Oxygen or sulfur directly attached to a cycloaliphatic ring system
    • 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
    • A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/04—Oxygen or sulfur attached to an aliphatic side-chain of a carbocyclic ring system
    • 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

  • the invention belongs to the technical field of pesticides, and particularly relates to a fungicide composition containing terpene alcohol and chitosan, and a preparation method and application thereof.
  • Cucumber downy Mildew commonly known as “dried horse race” and “dry leaves”, can be damaged at the seedling stage, mainly to the leaves and stems, and tendrils and pedicels are less affected. Cucumber downy mildew is the most common and most harmful disease in cucumber cultivation. The condition is violent, the disease is serious, and the spread is fast. If it is not controlled in time, it will cause devastating losses to the cucumber.
  • Longtan Pearl Plum is a late-ripening fine breed selected from local wild plums in Tian'e County, Guangxi. It was registered as a Geographical Indication of Agricultural Products by the Ministry of Agriculture in 2010.
  • the anthracnose disease of pearl plum has been serious. The disease harms young leaves, shoots and fruits, and causes serious losses to the production of pearl plum.
  • the local medicines used to control the anthracnose of pearl plum are relatively old, such as thiophanate-methyl, carbendazim, chlorothalonil, etc. These drugs are not ideal because of the resistance, which seriously restricts Longtan pearl plum Industry development.
  • Mango is one of the famous tropical fruits. It is loved by people. Mango fruit is rich in sugar, protein and crude fiber. The vitamin A precursors carotene and vitamin C in mango are particularly high and are rare in all fruits. Mango powdery mildew is mainly harmful to inflorescence and tender leaves. The main symptom is that some scattered white powdery plaques first appear on the injured organ, and then gradually expand and combine with each other to form a white powdery mold layer, and the tissue under the mold layer gradually becomes brown and necrotic. The damaging fungus belongs to the genus Aspergillus subsp. At present, the prevention and treatment effect on mango powdery mildew is not particularly ideal, the amount of medication is large, and the cure rate is low.
  • Terpineol is an extract of Melaleuca alternifolia (Melaleuca alternifolia), a new type of botanical fungicide, which also has the function of biostimulant.
  • Melaleuca alternifolia Melaleuca alternifolia
  • fungicide a new type of botanical fungicide
  • it can also control bacterial diseases caused by Xanthomonas and Pseudomonas. Safe and harmless to bees and other beneficial insects.
  • Chitosan (Chltosan), also known as chitin and chitin, is a water-soluble product produced by the removal of acetyl groups in concentrated alkali water. Its molecular formula is (C 6 H 11 O 4 N) n . Chitosan mainly inhibits the growth of pathogens by changing the structure and function of pathogen cell membranes, and has the effect of improving crop disease resistance and immune function. In agricultural production, chitosan is an excellent plant growth regulator and broad-spectrum fungicide. It is effective for the growth and reproduction of wheat Fusarium graminearum, rice bacterial leaf blight, potato ring rot fungus, cotton corner spot pathogen, etc. Fungal spore germination has obvious inhibitory effect.
  • L-alpha-terpineol ( ⁇ - (L) -Terpineol) is a compound synthesized by Guangxi Zhuang Autonomous Region Research Institute of Chemical Industry (see Chinese patent, patent number: ZL03178548.4, authorized on December 26, 2007, the name : Preparation method of L- ⁇ -terpineol), which has good bactericidal activity, and also has good deodorizing, wetting and penetrating capabilities.
  • the Guangxi Zhuang Autonomous Region Institute of Chemical Industry has conducted a lot of research on its biological activity, and the results show that the compound can be used as a pesticide fungicide or synergist.
  • the main object of the present invention is to provide a fungicidal composition containing terpene alcohol and chitosan, which has good bactericidal effect after being mixed with terpene alcohol, chitosan and L-alpha-terpineol, and increases The effect is obvious, especially in the application of pearl plum anthracnose.
  • the fungicidal composition containing terpene alcohol and chitosan of the present invention is composed of active ingredients including the following parts by weight: 1-20 parts of terpene alcohol and 1-5 parts of chitosan.
  • the fungicidal composition containing terpene alcohol and chitosan is composed of the following parts by weight of active ingredients: 5-15 parts of terpene alcohol, 2-4 parts of chitosan, and L-alpha-pine 5-15 parts of oleyl alcohol.
  • the fungicidal composition containing terpene alcohol and chitosan is combined with an auxiliary material to make a liquid preparation, characterized in that the auxiliary material includes: 1-70 parts by weight of solvent and 1-20 parts by weight Parts of surfactant, 0-2 parts by weight of defoamer, 1-5 parts by weight of antifreeze, 0-3 parts by weight of thickener.
  • the solvent is one or more of methanol, ethanol, acetone, ethyl acetate, methyl oleate, cyclohexanone, propanol, solvent oil S100A, fatty acid methyl ester, diethylene glycol butyl ether mixture;
  • the surfactants are calcium dodecylbenzenesulfonate, phenethylphenol polyoxyethylene ether, triphenylethylphenol polyoxypropylene polyoxyethylene intercalation polymer, calcium lignosulfonate, alkylnaphthalene A mixture of one or more of sulfonate, fatty alcohol polyoxyethylene ether sulfate, polycarboxylate, polyoxyethylene sorbitan fatty acid ester, alkylphenol polyoxyethylene ether;
  • the defoamer is a mixture of one or more of silicone defoamer, phosphate defoamer, butyl phosphate, isobutyl phosphate, and higher alcohol;
  • the antifreeze is a mixture of one or more of ethylene glycol, propylene glycol, and glycerin;
  • the thickening agent is a mixture of one or more of xanthan gum, gum arabic, gelatin, polyvinyl alcohol, magnesium aluminum silicate, and sodium carboxymethyl cellulose.
  • the fungicide composition containing terpene alcohol and chitosan is combined with an auxiliary material to make a solid preparation, characterized in that the auxiliary material includes: 10-70 parts by weight of an inert filler, 1-30 Parts by weight of functional accessories;
  • the functional auxiliary materials include one or more mixtures of surfactants, binders, and disintegrants.
  • the inert filler is a mixture of one or more of attapulgite, diatomaceous earth, kaolin, white carbon, bentonite, light calcium carbonate, and talc;
  • the surfactant is calcium lignosulfonate, sodium p-hydroxyphenyl lignosulfonate, sodium dodecylbenzenesulfonate, sodium dodecylsulfate, calcium dodecylbenzenesulfonate, alkyl Naphthalene sulfonate, sodium lignin sulfonate, sodium methylene bisnaphthalene sulfonate, sodium lauryl ether sulfate, fatty alcohol polyoxyethylene ether sulfonate, polyether sodium sulfonate, phenethylphenol polyoxyethylene ether A mixture of one or more of
  • the binder is a mixture of one or more of starch, polyvinylpyrrolidone, carboxymethyl cellulose, carboxyethyl cellulose, gelatin, xanthan gum and gum arabic;
  • the disintegrant is a mixture of one or more of urea, sodium sulfate, calcium carbonate, ammonium sulfate, calcium sulfate, sodium chloride, magnesium chloride, and sodium bicarbonate.
  • preparation method of the solid preparation includes the following steps:
  • the invention also provides the application of a fungicide composition containing terpene alcohol and chitosan in the prevention and treatment of cucumber downy mildew, pearl plum anthracnose and mango powdery mildew.
  • L-alpha-terpineol Due to its better dissolving, wetting and penetrating ability, L-alpha-terpineol can enhance the adhesion and absorption of terpene alcohols and chitosan on crops, thereby improving the action rate of these fungicides, It can reduce the dosage of pesticide formulations, thereby reducing costs; compound L-terpineol with terpene alcohol and chitosan to complement each other with obvious synergistic effect, which can more effectively kill plant pathogens, especially for Cucumber downy mildew, pearl plum anthracnose and mango powdery mildew have particularly good effects;
  • the present invention further mixes the synergist L-terpineol with terpene alcohol and chitosan, two compositions that themselves have a certain synergistic effect.
  • the synergistic effect as described in Example 23, can have a very large synergistic effect, can further reduce the dosage, and can be used in combination.
  • the mechanism of action is completely different and will not produce cross-phase resistance;
  • the fungicide composition containing terpene alcohol and chitosan provided by the present invention also has better stability, improves the sterilization speed, and extends the shelf life.
  • Terpene alcohol can affect the permeability barrier of the pathogenic cell membrane structure, destroying the cell membrane and cell wall, but the effect is slow;
  • chitosan itself is a plant growth regulator that can induce crops to produce resistance factors and improve crop disease resistance;
  • L-alpha-terpineol is used alone as a fungicide, with a large dosage and a short shelf life; after the combination of the three, the effect is good and the shelf life is long, which can effectively prevent and control plant diseases.
  • Example 1 (10% terpene alcohol, chitosan, L-alpha-terpineol microemulsion)
  • Terpene alcohol, L- ⁇ -terpineol, N-methylpyrrolidone, sodium dodecylbenzene sulfonate, alkylaryl polyoxypropylene polyoxyethylene ether, propylene glycol are fully stirred and dissolved in the container to prepare uniform Oil phase.
  • the oil phase is slowly added to the water phase of the formula amount, and the mixture is stirred for 1 hour to obtain a composition microemulsion with an active ingredient content of 10%.
  • Terpene alcohol 10% chitosan 2%, L-alpha-terpineol 10%, chloroform 14%, calcium dodecylbenzenesulfonate 5%, phenethylphenol polyoxyethylene ether 3%, fatty acid glycerin Ester 2%, ethylene glycol 2%, propylene glycol 1%, the balance is water.
  • Terpene alcohol, L- ⁇ -terpineol, calcium dodecylbenzenesulfonate, phenethylphenol polyoxyethylene ether, fatty acid glyceride, ethylene glycol, propylene glycol are fully stirred and dissolved in the container to prepare a uniform Oil phase.
  • the oil phase was slowly added to the water phase of the formula amount, and the mixture was stirred for 1.5 hours to obtain a composition microemulsion with an active ingredient content of 17%.
  • Example 3 (20% terpene alcohol, chitosan, L-alpha-terpineol aqueous emulsion)
  • Terpene alcohol 9%, chitosan 1%, L-alpha-terpineol 10%, calcium dodecylbenzenesulfonate 5%, dibenzyl biphenyl polyoxyethylene ether 10%, xylene 10% , Isooctyl alcohol 0.5%, ethylene glycol 1%, sorbitol 1%, polyvinyl alcohol 1%, the balance is water.
  • Xylene, terpene alcohol, L-alpha terpineol, calcium dodecylbenzenesulfonate, dibenzyl biphenyl polyoxyethylene ether, isooctyl alcohol, ethylene glycol, sorbitol, polyvinyl alcohol in this order Add to the reaction vessel, stir evenly and dissolve completely to get the oil phase. Stir and mix the chitosan and water in the vessel to prepare a uniform water phase. Under the condition of high shear in the homogenizer (rotation speed is 4000-5000r / min), slowly add the oil phase to the water phase. After the addition is completed, continue to maintain the above rotation speed and high shear for 30min to obtain the water emulsion of the herbicidal composition.
  • Example 4 (30% terpene alcohol, chitosan, l-alpha-terpineol wettable powder)
  • Terpene alcohol 10% chitosan 1%, L-alpha-terpineol 19%, fatty alcohol polyoxyethylene ether sulfonate 2%, calcium lignosulfonate 2%, calcium dodecylbenzenesulfonate 4%, the balance is white carbon black.
  • Example 5 (40% terpene alcohol, chitosan, L-alpha-terpineol water dispersible granules)
  • Terpene alcohol 20% chitosan 2%, L-alpha-terpineol 18%, sodium lignin sulfonate 4%, alkanolamide polyoxyethylene ether sulfonate 2%, fatty alcohol polyoxyethylene ether sulfonate Sodium 2%, sulfate starch 10%, and the balance is bentonite.
  • Example 6 (30% terpene alcohol, chitosan, L-alpha-terpineol dispersible oil suspension agent)
  • Terpene alcohol 15% chitosan 1%, L-alpha-terpineol 14%, alkyl naphthalene sulfonate formaldehyde condensate 5%, castor oil polyoxyethyl ether 4%, fatty alcohol polyoxyethyl Ether 8%, xanthan gum 1%, organic bentonite 1%, the balance is methyl oleate.
  • the composition having an active ingredient content of 30% can disperse oil suspending agents.
  • Example 7 (30% terpene alcohol, chitosan, L-alpha-terpineol aqueous emulsion)
  • Terpene alcohol 8% Terpene alcohol 8%, chitosan 2%, L-alpha terpineol 20%, calcium dodecylbenzenesulfonate 3%, phenethylphenol polyoxyethylene ether 3%, solvent oil S-100A5 %, The balance is water.
  • Example 8 (29% terpene alcohol ⁇ chitosan ⁇ L-terpineol emulsifiable concentrate)
  • Terpene alcohol 11% Terpene alcohol 11%, chitosan 3%, L-alpha-terpineol 15%, calcium dodecylbenzenesulfonate 3%, phenethylphenol polyoxyethylene ether 3%, solvent oil S-100A7% , The balance is methanol.
  • Example 9 (31% terpene alcohol, chitosan, L-alpha-terpineol wettable powder)
  • Terpene alcohol 15% chitosan 5%, L-alpha-terpineol 11%, methylenebisnaphthalene sulfonate 9%, phenethylphenol polyoxyethylene ether 5%, calcium sulfate 15%, more than The amount is white carbon black.
  • Example 10 (26% terpene alcohol, chitosan, L-alpha-terpineol water dispersible granules)
  • Terpene alcohol 18%, chitosan 1%, L-alpha-terpineol 7%, polyether sulfonate 5%, lignin sulfonate 10%, gelatin 4%, ammonium sulfate 6%, light carbonic acid 5% calcium, the balance is bentonite.
  • Example 11 (11% terpene alcohol, chitosan, L-alpha-terpineol dispersible oil suspension agent)
  • Terpene alcohol 7% Terpene alcohol 7%, chitosan 3%, L-alpha-terpineol 1%, isobutyl phosphate 7%, fatty acid polyoxyethylene ether salt 4%, alkylphenol polyoxyethylene ether 5%, Gelatin 3%, ethylene glycol 4%, the balance is methyl oleate.
  • Example 12 (12% terpene alcohol ⁇ chitosan ⁇ L- ⁇ -terpineol aqueous emulsion)
  • Terpene alcohol 5% Terpene alcohol 5%, chitosan 2%, L-alpha-terpineol 5%, ethanol 2%, fatty acid methyl ester 30%, alkylphenol polyoxyethylene ether 6%, alkyl glycoside 2%, more than The amount is water.
  • Example 13 (29% terpene alcohol, chitosan, levo- ⁇ -terpineol microemulsion)
  • Example 14 (38% terpene alcohol, chitosan, L-alpha-terpineol water dispersible granules)
  • Example 15 (12% terpene alcohol, chitosan, levo- ⁇ -terpineol suspension agent)
  • Terpene alcohol 8% chitosan 2%, L-alpha-terpineol 2%, calcium lignosulfonate 2.5%, calcium dodecylbenzenesulfonate 2%, alkylphenol polyoxyethylene ether 4% , Silicone 0.02%, n-octanol 2%, ethylene glycol 4%, the balance is water.
  • Example 16 (10% terpene alcohol ⁇ chitosan suspension agent)
  • Example 17 (7% terpene alcohol ⁇ chitosan suspension agent)
  • Terpene alcohol 5% Terpene alcohol 5%, chitosan 2%, alkyl naphthalene sulfonate 5%, polycarboxylate 10%, xanthan gum 0.1%, propylene glycol 3%, the balance is water.
  • Example 18 (12% terpene alcohol ⁇ chitosan wettable powder)
  • Example 19 (18% terpene alcohol ⁇ chitosan water dispersible granules)
  • Terpene alcohol 17%, chitosan 1%, sodium lauryl sulfate 14%, sodium lauryl ether sulfate 2%, carboxyethyl cellulose 5%, urea 6%, magnesium sulfate 5%, the balance is Attapulgite.
  • Example 20 (10% terpene alcohol ⁇ chitosan emulsifiable concentrate)
  • Example 21 Indoor virulence determination of cucumber downy mildew in different ratios of terpene alcohol, chitosan and L-terpineol
  • the indoor bioassay test was conducted according to "NY / T1156.3-2006 Pesticide Indoor Bioassay Test Guideline Fungicide Part 3: Test Method for Inhibiting Cucumber Downy Mildew Pathogens", using cucumber downy mildew (Pseudoperonospora cubensis) as the test bacteria Collect fresh cucumber downy mildew leaves from Sitang Town, Nanning City, Guangxi Zhuang Autonomous Region, take them back to the laboratory, rinse the dust with clean water, keep them moisturized, and store them on the isolated leaves. Wash the sporangia on the back of the leaves with deionized water to prepare 1 ⁇ 105 ⁇ 1 ⁇ 107 sporangia / mL suspension for inoculation.
  • each leaf After the leaves are dried, cut 2 leaves with a uniform growth from each of the 3 plants treated for a total of 6 leaves; put the back of the leaves up in a Petri dish with wet filter paper, each leaf receives 4 drops of 10 ⁇ L
  • the sporangia suspension was cultured in a light incubator at 18-20 ° C and 12h light / d for 7-10 days, and the diameter of the lesion was measured and recorded according to the control disease.
  • the prevention and control effect is calculated according to the following formula:
  • a, b, c represent terpene alcohol (A), chitosan (B), L- ⁇ -terpineol (C) the proportion of three agents in the mixture; EC50 (A), EC50 ( B), EC50 (C) represents the actual observed EC50 values of A, B, and C, EC50 (th) represents the theoretical EC50 value of the three agents A, B, and C mixed according to a: b: c, EC50 (ob) It is the actual observed EC50 value after mixing the three fungicides A, B and C according to a: b: c.
  • SR> 1.5, synergism; SR ⁇ 0.5, antagonism; SR between 0.5 and 1.5 indicates additive effect.
  • Example 22 Field control effect of 20% terpene alcohol, chitosan, L-terpineol aqueous emulsion on Longtan pearl plum anthracnose
  • the experiment set up 20% terpene alcohol ⁇ chitosan ⁇ L-alpha-terpineol EW60, 90, 120, 150g ai / hm 2 , 9% terpene alcohol EC 150g ai / hm 2 , 2% chitosan liquid AS 120g ai / hm 2 , 20% L- ⁇ -terpineol EC800g ai / hm 2 and clean water blank control, a total of 8 treatments, each treatment was repeated 4 times, each 3 plants was a cell, arranged in random blocks.
  • the trial was conducted 4 times, and the pre-drug incidence base was investigated on May 3, 2017; the first, second, and third investigations after drug were on May 12, 19, and 26, 2017, respectively.
  • Three plants in each community were investigated, and each plant was surveyed for 20 leaves according to the southeast, northwest, and 100 leaves for each plant, for a total of 300 leaves. Visually grade according to grading standards, record the total number of leaves and the number of diseased leaves at all levels, and calculate the average disease index and average prevention effect.
  • Disease leaf grading method 0 level: no disease spots; 1 level: the area of disease spots accounts for less than 5% of the entire leaf area; 3 levels: the area of disease spots accounts for 6% to 15% of the entire leaf area; 5 levels: the area of disease spots It accounts for 16% to 25% of the entire leaf area; Grade 7: the lesion area accounts for 26% to 50% of the entire leaf area; Grade 9: lesion area accounts for more than 51% of the entire leaf area.
  • Example 23 (terpene alcohol, chitosan, L-alpha-terpineol compound on field control of mango powdery mildew)
  • Test method The test was set up on the mango orchard of Guoliu Village, Dongjiang Town, Baise Field, Guangxi. Mango powdery mildew occurred all year round.
  • the pesticide composition preparations of Examples 1-20 were used as the test agent.
  • Butanan solution is a control agent, with 3 mango trees per area, arranged in random blocks, and repeated 4 times per treatment.
  • Table 3 The test results are shown in Table 3:
  • Test agent Active ingredient dosage (g / hm 2 ) First prevention effect /% Second prevention effect /% Example 1 120 70.5 81.9 Example 2 120 71.6 82.6 Example 3 120 69.8 81.7 Example 4 120 74.3 88.5 Example 5 120 78.5 90.4 Example 6 120 75.4 89.6 Example 7 120 71.8 82.8 Example 8 120 69.5 80.7 Example 9 120 70.5 84.2 Example 10 120 72.5 88.6
  • Example 11 120 72.9 85.7
  • Example 12 120 69.1 83.5
  • Example 13 120 75.2 90.6
  • Example 14 120 74.6 88.1
  • Example 15 120 73.6 87.3
  • Example 16 120 67.3 80.6
  • Example 17 120 65.6 80.1
  • Example 18 120 70.1 83.4
  • 120 71.2 82.5 Example 20
  • Example 3 The results of the field efficacy test are shown in Table 3. From Table 3, it can be seen that in Example 1-20, the combination of terpene alcohol and chitosan, and the pesticide formulation compounded with L-alpha-terpineol on mango powdery mildew The second control effect is more than 80%, which is significantly better than the control agent 9% terpene alcohol emulsifiable concentrate and 2% chitosan liquid.
  • the bactericidal composition of the present invention has not been observed to cause phytotoxicity to mango crops within the scope of medication, indicating that the bactericidal composition of the present invention is also safer and worthy of popularization and application.

Abstract

L'invention concerne une composition fongicide contenant du terpène et du chitosane, qui est constituée par les ingrédients actifs suivants en parties en poids : 1 à 20 parties de terpène et 1 à 5 parties de chitosane. La composition fongicide comprend en outre 1 à 20 parties de levo-alpha-terpinéol. La présente invention a un effet synergique relativement satisfaisant par le mélange à la fois de terpène et de chitosane, a un effet synergique évident par le mélange du levo-alpha-terpinéol avec du terpène et du chitosane en raison de fonctions complémentaires, ce qui peut tuer les champignons pathogènes des plantes de manière plus efficace, et a un effet particulièrement efficace de prévention et de traitement sur le mildiou du concombre, l'anthracnose perlière de la prune et le mildiou pulvérulent de la mangue.
PCT/CN2019/100741 2018-11-08 2019-08-15 Composition fongicide contenant du terpène et du chitosane, son procédé de préparation et son utilisation WO2020093749A1 (fr)

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CN109430264A (zh) * 2018-11-08 2019-03-08 广西壮族自治区化工研究院 一种含萜烯醇、几丁聚糖的杀菌剂组合物及其制备方法和应用

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