CN102934633B - Bactericidal composition containing trifloxystrobin and fenbuconazole, and application thereof - Google Patents
Bactericidal composition containing trifloxystrobin and fenbuconazole, and application thereof Download PDFInfo
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Abstract
The invention relates to a bactericidal composition containing trifloxystrobin and fenbuconazole, and an application thereof, and belongs to the field of pesticide technology. The weight part ratio of trifloxystrobin to fenbuconazole is 1-40 : 60-1; and the content of efficient active components in the bactericidal composition containing trifloxystrobin and fenbuconazole is 5-80%. The bactericidal composition is used for preventing powdery mildew, venturia nashicola and banded sclerotial blight of vegetables and fruit trees. The active components trifloxystrobin and fenbuconazole of the composition do not generate conflict when being mixed with each other, has very good synergistic effect for resistant diseases, has higher control effect than that of a single dosage, is low in dosage, greatly delays the generation of disease resistance, significantly improves the control effect, and is vital means for comprehensively controlling powdery mildew, venturia nashicola and banded sclerotial blight. The bactericidal composition reduces the dosage of an organic solvent, is not easy to generate phytotoxicity, and is convenient for transportation and storage. A water-based chemical dosage form has small pollutions to environment and low cost.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of bactericidal composition that contains oxime bacterium ester and RH-7592 and application thereof.
Technical background
Oxime bacterium ester (Trifloxystrobin), structural formula is (2Z)-2-methoxyimino-2-[2-[[1-[3-(trifluoromethyl) phenyl] ethyleneimino] oxygen methyl] phenyl] methyl acetate, molecular formula: C
20h
19f
3n
2o
4.
Oxime bacterium ester class wide-spectrum bactericide is the new fungicides of a class of successfully developing as bactericide lead compound from natural products Strobilurins.Characteristics such as comparing other similar medicaments and there is more efficient, wide spectrum, protection, treat, root out, infiltration, systemic activity, resistance of rainwater washing against, lasting period are long.To Isosorbide-5-Nitrae-demethylation enzyme inhibitor, benzamides, it is effective that dicarboxyl amine and benzimidazole produce the bacterial strain of resistance, with at present existing bactericide without cross resistance.Nearly all Mycophytes (Ascomycetes, Basidiomycetes, Oomycete and Fungi Imperfecti) disease is all had to good activity as powdery mildew, rust, Ying's rot, net blotch, downy mildew, rice blast etc.Except powdery mildew, leaf spot are had special efficacy, rust, downy mildew, damping off, apple apple scab are had to good activity.
RH-7592 (Fenbuconazole), structural formula is 4-(4-chlorphenyl)-2-phenyl o-2-(1H-1,2,4-triazol-1-yl methyl) butyronitrile, molecular formula: C
19h
17c
ln
4.
RH-7592 belongs to sterol demethylation inhibitor, destroys and stop the biosynthesis of germ cell membrane important composition composition ergosterol, causes cell membrane not form, and makes germ dead, has interior suction, protection and therapeutic activity.Can stop the germ spore germinateed to be invaded and make fabric texture, suppress the elongation of mycelia, can effectively prevent and treat disease due to sac fungi, basidiomycetes and imperfect fungus, as powdery mildew, scab, banded sclerotial blight, anthracnose etc.
No matter be oxime bacterium ester or RH-7592, or other efficient germicides, single in same disease Reusability, after the regular hour, drug effect just obviously goes down, even nearly unavailable, this phenomenon, be exactly germ has produced pesticide resistance.Drug-fast generation, forces peasant to have to increase dosage and medication number of times, has just formed so again a kind of pernicious upgrading phenomenon.When germ is subject to after doses action of agricultural chemicals, a little dead, wherein insensitive individuality is just survived, and raise up seed, such offspring's pesticide resistance is just stronger, for preventing and treating the disease developing immunity to drugs in agricultural, a kind of method is to release new and the new component of existing kind without cross resistance, but new component development cost is high, construction cycle is long, and the speed forever developing immunity to drugs less than disease, additive method, if crop allocation adjustment etc. is in actual mechanical process, is difficult to play obvious effect.
Summary of the invention
The object of the invention is to propose a kind of have synergistic effect, use cost is low, preventive effect the is good bactericidal composition containing oxime bacterium ester and RH-7592.
Another object of the present invention is to provide the application of the bactericidal composition of a kind of oxime bacterium ester and RH-7592.
The present invention is achieved through the following technical solutions:
Containing a bactericidal composition for oxime bacterium ester and RH-7592, wherein oxime bacterium ester and RH-7592 ratio of weight and number are 1～40:60～1.
The described bactericidal composition containing oxime bacterium ester and RH-7592, wherein the ratio of weight and number of oxime bacterium ester and RH-7592 is 5～40:50～5.
The described bactericidal composition containing oxime bacterium ester and RH-7592, wherein the ratio of weight and number of oxime bacterium ester and RH-7592 is 10～30:40～10.
Containing a bactericidal composition for oxime bacterium ester and RH-7592, for preventing and treating powdery mildew, scab, the banded sclerotial blight of vegetables and fruit tree.
The described bactericidal composition containing oxime bacterium ester and RH-7592 can be made into wetting powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion.
The described bactericidal composition effective active component content containing oxime bacterium ester and RH-7592 is 5～80%.
When making wetting powder, composition comprises following constituent content: oxime bacterium ester 1～40%, RH-7592 1～60%, dispersant 3～12%, wetting agent 2～10%, filler 10～82%.
Oxime bacterium ester, RH-7592, dispersant, wetting agent, filler are mixed, in mixing kettle, mix, after airslide disintegrating mill is pulverized, mix again, can be made into oxime bacterium ester RH-7592 wetting powder product.
When making water dispersible granules, composition comprises following constituent content: oxime bacterium ester 1～40%, RH-7592 1～60%, dispersant 3～15%, wetting agent 2～12%, disintegrant 0～10%, filler 10～82%.
Oxime bacterium ester, RH-7592, dispersant, wetting agent, disintegrant, filler etc. are obtained to the particle diameter needing through air-flow crushing together, obtain the materials of granulating.By item quantitatively send in fluidized bed granulation dryer through granulation and dry after, make oxime bacterium ester RH-7592 water dispersible granules product.
When making suspending agent, composition comprises following constituent content: oxime bacterium ester 1～30%, RH-7592 1～50%, dispersant 3～12%, wetting agent 2～10%, defoamer 0.1～0.5%, thickener 0～2%, antifreeze 0～8%, deionized water surplus.
Dispersant, wetting agent, defoamer, thickener, antifreeze in above-mentioned formulation material are mixed through high speed shear, add oxime bacterium ester, RH-7592, in sand mill, sand milling is 1～2 hour, makes diameter of particle all below 5 microns, makes oxime bacterium ester RH-7592 suspending agent product.
While making aqueous emulsion, comprise following group component composition: oxime bacterium ester 1～30%, RH-7592 1～50%, solvent and cosolvent 5～40%, emulsifier 1～12%, antifreezing agent 0～8%, thickener 0～1%, defoamer 0.1～0.5%, deionized water surplus.
Above-mentioned formulation material is mixed, the former medicine of oxime bacterium ester, the former medicine of RH-7592, solvent, emulsifier are added together, make to be dissolved into even oil phase; Deionized water, antifreeze, thickener, defoamer are mixed, become homogeneous water.Under high-speed stirred, water is added to oil phase, can make oxime bacterium ester RH-7592 aqueous emulsion.
While making microemulsion, comprise following group component composition: oxime bacterium ester 1～30%, RH-7592 1～40%, solvent and cosolvent 5～40%, emulsifier 4～20%, antifreezing agent 1～5%, defoamer 0～0.5%, deionized water surplus.
The compound method of microemulsion: be that the former medicine of oxime bacterium ester, the former medicine of RH-7592 are dissolved in the reactor that solvent and cosolvent are housed; After emulsifier, antifreeze, defoamer, deionized water being joined in the reactor that above-mentioned solution is housed, give strong mixing and homogenize, finally obtain the as clear as crystal oxime bacterium ester RH-7592 microemulsion of outward appearance.
Described dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid glyceride APEO.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, soapberry powder.
Described solvent and cosolvent are selected from one or more in acetonitrile, DMF, ethylene glycol, propane diols, ethanol, toluene, dimethylbenzene, cyclohexanone, vegetable oil, 1-METHYLPYRROLIDONE, NOP.
Described emulsifier is selected from: agriculture breast 500
#(alkyl benzene calcium sulfonate), OP series phosphate (polyoxyethylene nonylphenol ether phosphate), 600
#phosphate (phenyl phenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate salt, alkyl biphenyl ether disulfonic acid magnesium salts, triethanolamine salt, agriculture breast 400
#(benzyl dimethyl phenol polyoxy ethyl ether), agriculture breast 600
#(phenyl phenol polyoxy ethyl ether), Nongru-700
#(alkylphenol-formaldehyde resin polyoxy ethyl ether), agriculture breast 36
#(phenethyl fluosite polyoxy ethyl ether), agriculture breast 1600
#(phenethyl phenol polyoxy ethyl polypropylene-base ether), ethylene oxide-propylene oxide block copolymer, OP series (polyoxyethylene nonylphenol ether), By series (castor oil polyoxyethylene ether), agriculture breast 33
#(alkylaryl polyoxyethylene polyoxypropylene ether), agriculture breast 34
#one or more in (alkylaryl polyoxyethylene poly-oxygen propylene aether), sapn series (sorbitol anhydride list hard fatty acids), tween series (anhydrous sorbitol fatty acid anhydride polyoxyethylene), AEO series (fatty alcohol-polyoxyethylene ether).
Described disintegrant is selected from: one or more in bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, sodium bicarbonate.
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, glycerine.
Described defoamer is selected from: one or more in silicone oil, silicone compound, C10-20 saturated fat acid compounds, C8-10 aliphatic alcohols compound.
Described thickener is selected from: one or more in xanthan gum, aluminium-magnesium silicate, polyvinyl alcohol, polyethylene glycol.
Described filler is selected from: in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, precipitated calcium carbonate one or more.
Beneficial effect of the present invention: present composition effective active composition oxime bacterium ester and RH-7592 belong to the bactericide of two kinds of different mechanisms of action, and both are mutually mixed and can produce conflict; Antagonism disease has good synergistic effect, and preventive effect is higher than single dose, and dosage is little, has greatly delayed the generation of disease drug resistance, has obviously improved control efficiency, is the important means of integrated control powdery mildew, scab, banded sclerotial blight.The present invention has reduced the usage amount of organic solvent, is difficult for producing poisoning, is convenient to transportation and storage; Water base agent type environmental pollution is little, and cost is low.
Embodiment
Below in conjunction with embodiment, to further instruction of the present invention, the percentage in embodiment is all weight percentage, but the present invention is not limited thereto.
The embodiment of the present invention is the method that adopts Toxicity Determination and field trial to combine.First by Toxicity Determination, the synergy ratio (SR) after clear and definite two kinds of medicaments are composite by a certain percentage, SR < 0.5 be antagonism, and 0.5≤SR≤1.5 are summation action, and SR > 1.5 is synergistic effect.On this basis, then carry out field trial.
implementation of an application example one: the implementation of Formulation Example.
embodiment1:70% oxime bacterium ester RH-7592 wetting powder.
Oxime bacterium ester 30%, RH-7592 40%, polycarboxylate 4%, lauryl sodium sulfate 3%, wetting and penetrating agent F 2%, white carbon 11%, kaolin supplies 100%, and mixture carries out air-flow crushing, makes 70% oxime bacterium ester RH-7592 wetting powder.
embodiment 2: 55% oxime bacterium ester RH-7592 wetting powder.
Oxime bacterium ester 25%, RH-7592 30%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt 4%, wetting and penetrating agent F 4%, white carbon 10%, attapulgite are supplied, and mixture carries out air-flow crushing, make 55% oxime bacterium ester RH-7592 wetting powder.
embodiment 3:35% oxime bacterium ester RH-7592 wetting powder.
Oxime bacterium ester 20%, RH-7592 15%, aliphatic amine polyoxyethylene ether 4%, silkworm excrement 4%, white carbon 10%, bentonite are supplied, and mixture carries out air-flow crushing, make 35% oxime bacterium ester RH-7592 wetting powder.
embodiment 4:75% oxime bacterium ester RH-7592 water dispersible granules.
Oxime bacterium ester 25%, RH-7592 50%, lignosulfonates 5%, lauryl sodium sulfate 4%, ammonium sulfate 5%, corn starch are supplied, and mix and make 75% oxime bacterium ester RH-7592 water dispersible granules.
embodiment 5:55% oxime bacterium ester RH-7592 water dispersible granules.
Oxime bacterium ester 40%, RH-7592 15%, alkyl benzene sulfonate calcium salt 6%, soapberry powder 5%, urea 3%, starch are supplied, and mix and make 55% oxime bacterium ester RH-7592 water dispersible granules.
embodiment 6:40% oxime bacterium ester RH-7592 water dispersible granules.
Oxime bacterium ester 20%, RH-7592 20%, polyoxyethylene carboxylate 5%, spaonin powder 6%, succinic acid 2%, ammonium sulfate 4%, starch are supplied, and mix and make 40% oxime bacterium ester RH-7592 water dispersible granules.
embodiment 7:50% oxime bacterium ester RH-7592 suspending agent.
Oxime bacterium ester 40%, RH-7592 10%, sodium lignin sulfonate 5%, DBSA 4%, silicone oil 0.1%, polyvinyl alcohol 0.2%, deionized water adds to 100%, mixes and makes 50% oxime bacterium ester RH-7592 suspending agent.
embodiment 8:45% oxime bacterium ester RH-7592 suspending agent.
Oxime bacterium ester 15%, RH-7592 30%, fatty acid glyceride APEO 5%, wetting and penetrating agent F 4%, silicone compound 0.1%, aluminium-magnesium silicate 0.3%, ethylene glycol 2%, deionized water add to 100%, mix and make 45% oxime bacterium ester RH-7592 suspending agent.
embodiment 9:20% oxime bacterium ester RH-7592 suspending agent.
Oxime bacterium ester 10%, RH-7592 10%, aliphatic amine polyoxyethylene ether 3%, silkworm excrement 4%, silicone compound 0.1%, polyethylene glycol 0.2%, glycerine 4%, deionized water add to 100%, mix and make 20% oxime bacterium ester RH-7592 suspending agent.
embodiment 10:36% oxime bacterium ester RH-7592 aqueous emulsion.
Oxime bacterium ester 18%, RH-7592 18%, cyclohexanone 12%, 1-METHYLPYRROLIDONE 11%, ethanol 6%, agriculture breast 500
#2%, agriculture breast 1600# 5%, Nongru-700
#2%, ethylene glycol 3%, silicone compound 0.4%, deionized water are mended to 100%, make 56% oxime bacterium ester RH-7592 aqueous emulsion.
embodiment 11:25% oxime bacterium ester RH-7592 aqueous emulsion.
Oxime bacterium ester 5%, RH-7592 20%, cyclohexanone 16%, vegetable oil 5%, agriculture breast 400
#2%, agriculture breast 36
#2%, ethylene glycol 4%, silicone compound 0.4%, deionized water supply 100%, by above-mentioned production technology, make 25% oxime bacterium ester RH-7592 aqueous emulsion.
embodiment 12:9% oxime bacterium ester RH-7592 aqueous emulsion.
Oxime bacterium ester 4%, RH-7592 5%, vegetable oil 10%, acetonitrile 3%, OP series 3%, agriculture breast 1600
#3%, ethylene glycol 4%, silicone compound 0.4%, deionized water are mended to 100%, by above-mentioned production technology, make 9% oxime bacterium ester RH-7592 aqueous emulsion.
embodiment 13:42% oxime bacterium ester RH-7592 microemulsion.
Oxime bacterium ester 22%, RH-7592 20%, NOP 8%, DMF 10%, cyclohexanone 7%, BY series 5%, 600
#phosphate 4%, agriculture breast 33
#4%, ethylene glycol 2%, silicone compound 0.2%, deionized water are mended to 100%, by above-mentioned production technology, make 42% oxime bacterium ester RH-7592 microemulsion.
embodiment 14:26% oxime bacterium ester RH-7592 microemulsion.
Oxime bacterium ester 18%, RH-7592 8%, vegetable oil 4%, 1-METHYLPYRROLIDONE 8%, triethanolamine salt 6%, tween series 10%, ethylene glycol 4%, silicone compound 0.2%, deionized water are mended to 100%, by above-mentioned production technology, make 26% oxime bacterium ester RH-7592 microemulsion.
embodiment 15:6% oxime bacterium ester RH-7592 microemulsion.
Oxime bacterium ester 2%, RH-7592 4%, cyclohexanone 4%, N, N dimethyl formamide 6%, AEO series 3%, styrene polyoxyethylene ether ammonium sulfate salt 7%, ethylene glycol 4%, silicone compound 0.2%, deionized water are mended to 100%, by above-mentioned production technology, make 6% oxime bacterium ester RH-7592 microemulsion
implementation of an application example two:oxime bacterium ester and RH-7592 are mixed to wheat powdery mildew Toxicity Determination.
Test medicine provides by Jiangxi Zhengbang Biology Chemical Industry Co., Ltd.
Test medicine is arranged respectively to 5 dose concentrations to be processed, if contrast without medicine, each concentration is processed and is repeated 4 times, with reference to < < farm-chemical indoor determination test rule bactericide > >, carry out, the incidence of routine observation inoculation blade and newborn blade, record the incidence that each is processed, and calculate disease index and protection effect thereof.Concentration-preventive effect is converted into corresponding logarithm-probit value, obtains virulence regression equation, calculate EC
50value is also calculated coefficient of synergism SR value according to Wadley formula.
Computing formula is as follows:
Disease index=Σ (the sick number of sheets * relative level numerical value at different levels)/(investigation sum * 9)
Control efficiency (%)={ 1-(CK
0* PT
1)/(CK
1* PT
0) * 100
In formula: CK
0: disease index before the dispenser of blank district
CK
1: disease index after the dispenser of blank district
PT
0: disease index before the dispenser of chemicals treatment district
PT
1: disease index after the dispenser of chemicals treatment district.
Wadley method: evaluate the synergistic effect of pharmacy mix according to coefficient of synergism (SR), SR<0.5 is antagonism, and 0.5≤SR≤1.5 are summation action, and SR>1.5 is synergistic effect.
The coefficient of synergism SR value of mixture is calculated: SR=EC
50(theoretical value)/EC(observed value)
EC
50theoretical value=(a+b)/(a/A)+(b/B) }.
Wherein: a, b are distributed as oxime bacterium ester and RH-7592 shared ratio in combination
A is the EC of oxime bacterium ester
50; B is the EC of RH-7592
50.
Result of the test is as follows.
Table 1 oxime bacterium ester, RH-7592 and composite to wheat powdery mildew toxicity test.
As shown in Table 1, oxime bacterium ester and RH-7592 are composite to wheat powdery mildew toxicity test, oxime bacterium ester virulence is lower than RH-7592 virulence, its proportioning is that 5: 1,2: 1,1: 1,1: 2,1: a 5 o'clock coefficient of synergism is respectively 1.52,1.66,2.09,1.83,1.51, all show as synergistic effect, so oxime bacterium ester and RH-7592 ratio have synergistic effect between 5: 1 to 1: 5 time, when oxime bacterium ester and RH-7592 ratio are 1: 1, synergy ratio is maximum, can be used as best proportioning.
implementation of an application example three:oxime bacterium ester, RH-7592 and the composite powdery mildew of cucumber field efficacy drug effect of preventing and treating thereof.
This experimental establishment is in Jinxian County, Jiangxi Province, test medicine is provided by Jiangxi Zhengbang Biology Chemical Industry Co., Ltd, in their early stage dispenser, dispenser in every seven days once, dispenser twice altogether, observes disease index and calculates preventive effect (preventive effect formula implementation of an application example two is already described) after 7 days, 14 days after last medicine.Result of the test is as follows.
Table 2 oxime bacterium ester, RH-7592 and the composite powdery mildew of cucumber test of pesticide effectiveness of preventing and treating thereof.
| Treatment agent | Preparation consumption | 7 days preventive effects (%) after last medicine | 14 days preventive effects (%) after last medicine |
| Embodiment 2 | 3.5 gram/acre | 81.34 | 92.33 |
| Embodiment 4 | 2.5 gram/acre | 78.42 | 91.55 |
| Embodiment 9 | 7 grams/acre | 85.65 | 95.87 |
| Embodiment 11 | 6 grams/acre | 75.21 | 88.89 |
| Embodiment 14 | 5 grams/acre | 73.34 | 87.69 |
| 25% oxime bacterium ester wetting powder | 21 grams/acre | 65.25 | 83.67 |
| 5% RH-7592 microemulsion | 45 grams/acre | 69.64 | 85.82 |
Result of the test shows, can effectively prevent the generation of powdery mildew of cucumber after oxime bacterium ester and RH-7592 are composite, and preventive effect is better than contrasting single dose, and dosage is little, test scope of medication in to crop safety.
implementation of an application example four:oxime bacterium ester, RH-7592 and the composite pear scab field control effectiveness test of preventing and treating thereof.
This experiment is carried out in Liaocheng of Shandong Province, and test medicine is provided by Jiangxi Zhengbang Biology Chemical Industry Co., Ltd, and in their early stage dispenser, once, dispenser is 2 times altogether in dispenser in every seven days, within after last medicine 7 days, 14 days, observes disease index and calculates preventive effect.Result of the test is as follows.
Table 3 oxime bacterium ester, RH-7592 and the composite pear scab test of pesticide effectiveness of preventing and treating thereof.
| Treatment agent | Extension rate | 7 days preventive effects (%) after last medicine | 14 days preventive effects (%) after last medicine |
| Embodiment 1 | 6000 times | 79.54 | 92.33 |
| Embodiment 5 | 5000 times | 75.32 | 91.55 |
| Embodiment 8 | 4500 times | 77.55 | 89.87 |
| Embodiment 10 | 4000 times | 84.21 | 98.19 |
| Embodiment 13 | 4500 times | 82.34 | 95.69 |
| 25% oxime bacterium ester wetting powder | 1500 times | 68.25 | 83.67 |
| 5% RH-7592 microemulsion | 1000 times | 71.64 | 86.82 |
Result of the test shows, after oxime bacterium ester and RH-7592 are composite, can effectively prevent and treat pear scab, has obvious synergistic effect, preventive effect is obviously better than contrasting single dose, has advantages of quick-actingly and long-acting, has greatly reduced usage amount, reduced cost, crop safety in this experimental drug scope.
implementation of an application example five:oxime bacterium ester, RH-7592 and the composite rice sheath blight disease field control effectiveness test of preventing and treating thereof.
This experimental establishment is in Rui Hong town, Yugan County, Jiangxi Province, test medicine is provided by Jiangxi Zhengbang Biology Chemical Industry Co., Ltd, in rice sheath blight disease their early stage, starts dispenser, and within every seven days, dispenser is 1 time, dispenser is 2 times altogether, within after last medicine 7 days, 14 days, observes disease index and calculates preventive effect.Result of the test is as follows.
Table 4 oxime bacterium ester, RH-7592 and the composite rice sheath blight disease field control effectiveness test of preventing and treating thereof.
| Treatment agent | Extension rate | 7 days preventive effects (%) after last medicine | 14 days preventive effects (%) after last medicine |
| Embodiment 3 | 6000 times | 83.51 | 95.93 |
| Embodiment 6 | 7000 times | 86.36 | 97.58 |
| Embodiment 7 | 8000 times | 77.89 | 88.87 |
| Embodiment 12 | 4000 times | 81.21 | 96.18 |
| Embodiment 15 | 3000 times | 82.37 | 95.89 |
| 25% oxime bacterium ester wetting powder | 2000 times | 71.28 | 82.67 |
| 5% RH-7592 microemulsion | 1000 times | 75.44 | 84.82 |
Result of the test shows, the composite rear control to rice sheath blight disease of oxime bacterium ester and RH-7592 has obvious synergistic effect, and preventive effect is all better than contrasting single dose, has advantages of quick-actingly and long-acting, in this test scope of medication, do not find that paddy rice is had to symptom of chemical damage.
Claims (3)
1. containing a bactericidal composition for oxime bacterium ester and RH-7592, it is characterized in that: active ingredient is comprised of oxime bacterium ester and RH-7592, the ratio of weight and number of described oxime bacterium ester and RH-7592 is 10～30:40～10.
2. a kind of bactericidal composition containing oxime bacterium ester and RH-7592 according to claim 1, it is characterized in that: wetting powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion, the content that wherein contains the bactericidal composition of oxime bacterium ester and RH-7592 is 5～80%.
3. according to the arbitrary described a kind of bactericidal composition containing oxime bacterium ester and RH-7592 of claim 1-2, it is characterized in that: for preventing and treating powdery mildew, scab, the banded sclerotial blight of vegetables and fruit tree.
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