CN101653148A - Synergistic composition containing kresoxim-methyl - Google Patents
Synergistic composition containing kresoxim-methyl Download PDFInfo
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- CN101653148A CN101653148A CN200910165913A CN200910165913A CN101653148A CN 101653148 A CN101653148 A CN 101653148A CN 200910165913 A CN200910165913 A CN 200910165913A CN 200910165913 A CN200910165913 A CN 200910165913A CN 101653148 A CN101653148 A CN 101653148A
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Abstract
The invention relates to a bactericidal composition comprising the effective components of kresoxim-methyl and tolclofos-methyl. The two effective components are compounded, which can expand the bactericidal spectrum, has synergistic interaction and reduces the application quantity. The bactericidal composition is suitable for preventing and treating soil-borne diseases on crops and is especiallysuitable for preventing and treating root rot.
Description
Technical field
The present invention relates to a kind of bactericidal composition, especially contain the bactericidal composition of kresoxim-methyl.
Background technology
Root rot is a kind of common disease on field crop and economic crops produce.Its pathogenic bacteria are based on pythium (Pythium), Phytophthora (Phytophthora), Rhizoctonia (Rhizoctonia), Fusarium (Fusarium), Sclerotinia plant pathogenic fungis such as (Sclerotinia).Common root rot has tomato damping off, cucumber rhizoctonia rot, balsam pear fusarium wilt etc.Root rot cause of disease complexity is often caused jointly by two or more different classes of pathogen.When environmental condition suited, diseased plant was also easily invaded by the strong pathogen of some saprophytic property again, quickened butt rot, caused compound symptom.
Preventing and treating root rot medicament commonly used is tpn, mancozeb, metalaxyl, pcnb, carbendazim, tmtd, the mould spirit of evil etc.But these medicament mechanisms of action are all more single, use preventive effect to descend for a long time, and fungicidal spectrum is narrow, and is especially very poor to the compound symptom control efficiency of root rot.
Kresoxim-methyl: be a kind of efficient, wide spectrum, new type bactericide, belong to the outstanding kind in the methoxy acrylate series bactericidal agent.Kresoxim-methyl has good penetration and systemic action, the selectivity height, and to crop, people, animal and beneficial organism safety, environmental pollution is little.Nearly all fungi (sac fungi, basidiomycetes, mastigomycetes, imperfect fungus) disease is all shown good active.Kresoxim-methyl site of action (cytochrome b) was with all bactericide were all different in the past, thereby it is effective that sterol inhibitor (as triazole type), phenylamide, dicarboxylic dihydrazides amine, benzimidazole etc. are produced the pathogenic strains of resistance.
However, if long-term single use kresoxim-methyl still has the risk that produces resistance.In addition, the cost of its single usefulness is higher.By carrying out compositely with other effective bactericide, can improve control efficiency, reduce cost, delay pathogen simultaneously kresoxim-methyl is produced the speed of resistance, prolong its service life.
At present, containing the composition of kresoxim-methyl active ingredient control crop root rot can be at Chinese patent (200610149364.1; 200710136727.2; 200710136728.7) on check in, yet these contain kresoxim-methyl and prevent and treat the composition that is mixed of root rot and in soil, very easily run off, it is short to prevent and treat the soil-borne disease lasting period, the cost height.
Summary of the invention
The objective of the invention is to overcome the deficiency of above composition, provide a kind of and new be applicable to control, and resistance risk is low, good drug efficacy, long bactericidal composition of lasting period by rhizoctonia, sickle-like bacteria, the microbial root rot of nuclear disk or by the microbial compound symptom root rot of two or more infective pathogens.
In the bactericidal composition of the present invention; tolelofos-methyl is a kind of protectiveness organophosphorus fungicide; to the higher mammal low toxicity; to honeybee, fish safety; be suitable for preventing and treating soil-borne disease; imperfect fungus, basidiomycetes and sac fungi etc. there are very strong bactericidal activity, especially rhizoctonia solani, sclerotium germ, snow mold bacterium, white beautiful germ, didymella bryoniae etc. are had remarkable toxic action.The effect of tolelofos-methyl adsorption by soil is strong, is difficult for running off, and the lasting period reaches 50～120 days.Tolelofos-methyl and kresoxim-methyl are mixed and prevent and treat root rot, have remedied the deficiency that kresoxim-methyl easily runs off in soil.
The inventor is by a large amount of indoor and field trials, after unexpected discovery kresoxim-methyl and tolelofos-methyl are mixed in certain proportion, the microbial root rot of cause of disease such as control rhizoctonia, sickle-like bacteria, sclerotinite are had surprised synergistic effect, and the mould root rot effect that causes of, epidemic disease mould to corruption is also quite remarkable.
On the basis of above-mentioned discovery, through composition is carried out symphyogenetic quantitative analysis, formed technical scheme of the present invention, that is: a kind of composition pesticide, its active ingredient is kresoxim-methyl and tolelofos-methyl, and the mass ratio of kresoxim-methyl and tolelofos-methyl is 1: 50～50: 1.
As a kind of improvement of the present composition, in the described composition mass ratio of active ingredient kresoxim-methyl and tolelofos-methyl be preferably 1: 30～20: 1.
Bactericidal composition of the present invention can be prepared into known method and be fit to any one formulation that agricultural is used, reasonable formulation is missible oil, microemulsion, aqueous emulsion, suspending agent, wetting powder, water dispersible granules, and content of effective is 10%～90% in the preparation.
The auxiliary agent that uses in the composition of the present invention comprises that solvent, dispersant, emulsifier, stabilizing agent, antifreezing agent, wetting agent etc. and other are of value to the known substance that active ingredient is stablized and drug effect is brought into play in preparation, all be the various compositions of using or allow use in the pesticidal preparations always, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to prescription.
Product described in the invention can the finished product preparation form provide, and promptly each material mixes in the composition, and the composition of composition also can provide with single agent form, directly directly mixes in bucket or jar before the use, is diluted to required concentration then.
Bactericidal composition of the present invention can be used for preventing and treating the multiple diseases on cucumber, watermelon, pumpkin, muskmelon, beet, cucumber, capsicum, eggplant, Chinese cabbage, wild cabbage, cotton, seeding corn and other crops and the flowers, is particularly useful for preventing and treating damping off, damping off, stalk break, root rot.
Compared with prior art, beneficial effect of the present invention is: 1. composition has synergistic effect, has improved control efficiency; 2. kresoxim-methyl is different with the tolelofos-methyl mechanism of action, is mixed between the two, has reduced the single selection pressure to germ, has reduced the risk that produces resistance; 3. after drug effect improved, the consumption of active ingredient reduced, and cost descends, and has reduced residue of pesticide and environmental pollution simultaneously; 4. compare with the agent of kresoxim-methyl list, the lasting period of the present composition is longer.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention further describes with following instantiation, but the present invention is limited to these examples absolutely not.
Different pesticide active ingredients shows three kinds of type of action after mixing usually, and promptly summation action, synergistic effect and antagonism act on but which kind of is specially, and be unpredictable, has only by a large amount of tests and just can know.Compound synergic is well filled a prescription, and can improve actual control efficiency, reduces the usage amount of agricultural chemicals, helps the generation of delaying drug resistance, is the important means of resistance management.
The present composition is an active ingredient with kresoxim-methyl and tolelofos-methyl, both sterilization mechanisms are inequality, combination all has obvious role in synergism to cucumber rhizoctonia rot bacterium, balsam pear wilt, Phytophthora capsici germ between them, and be not only the simple addition of two kinds of medicament effects, this can very clearly from the result of following biologicall test example find out.
The biologicall test example
The inventor is finding that the combination of kresoxim-methyl and tolelofos-methyl has on the basis of better bactericidal action cucumber rhizoctonia rot, balsam pear wilt, capsicum epidemic disease, has carried out symphyogenetic Quantitative Study.Test is a tested object with cucumber rhizoctonia rot bacterium, balsam pear wilt, Phytophthora capsici germ.
Biologicall test example 1
Subjects is cucumber rhizoctonia rot bacterium (Rhizoctonia solani).Take by weighing the former medicine of a certain amount of kresoxim-methyl, the former medicine of tolelofos-methyl, behind a certain amount of xylene soluble kresoxim-methyl, tolelofos-methyl, add Tween-80 again and a certain amount of aqua sterilisa is made into mother liquor.On the basis of mother liquor,, prepare the dilution of 7 series respectively for examination concentration by the trial test result.According to kresoxim-methyl: tolelofos-methyl is 50: 1,40: 1,30: 1,20: 1,10: 1,1: 1,1: 10,1: 20,1: 30,1: 40,1: 50 proportioning, the soup of preparation series concentration.
Test method adopts the mycelial growth rate method.With the aqua sterilisa of an amount of dimethylbenzene and Tween-80 (CK) in contrast.Getting the 8ml soup joins in the conical flask that the hot medium of 72ml (PDA medium, 45-50 ℃) is housed, after shaking up, pour diameter 90mm glass culture dish rapidly into, each culture dish is poured band medicine medium 13ml into, and each handles 4 repetitions, level leaves standstill, and makes flat board after the cooling.Cut bacterium cake from what cultivate 2d for the examination colony edge with diameter 5mm card punch, be attached to and be with on the malicious medium with choosing one side that pin will have a mycelia, all operations all carries out sterile working at superclean bench.Be placed in 22 ± 1 ℃ the constant temperature aseptic culture case camera bellows after the processing and cultivate, take out behind the 2d.Adopt the right-angled intersection method to measure the colony diameter that each is handled respectively, calculate mean value, the mycelial growth inhibition rate of colony diameter.
Calculate toxicity regression and EC with Finney probit value method
50(mg/L).
The method that proposes according to the Sun Pei cloud calculates the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value), promptly
Actual measurement toxicity index (ATI)=standard medicament EC
50/ reagent agent EC
50* 100
The percentage composition of B in percentage composition+B medicament toxicity index * mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index * mixture
Co-toxicity coefficient (CTC)=mixture actual measurement toxicity index (the ATI)/theoretical toxicity index (TTI) of mixture.
Evaluation criterion: co-toxicity coefficient (CTC)≤80 is an antagonism, and 80＜CTC＜120 are summation action, and CTC 〉=120 are synergistic effect.
Experimental result such as following table
Table 1 kresoxim-methyl tolelofos-methyl is to the Toxicity Determination result of cucumber rhizoctonia rot bacterium
| Handle | The active ingredient mass ratio | ??EC 50(mg/L) | Co-toxicity coefficient |
| Kresoxim-methyl: tolelofos-methyl | ??1∶50 | ??2.10 | ??142.2 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶40 | ??1.80 | ??163.3 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶30 | ??0.84 | ??340.9 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶20 | ??0.76 | ??358.9 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶10 | ??0.63 | ??381.7 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶1 | ??0.32 | ??354.8 |
| Kresoxim-methyl: tolelofos-methyl | ??10∶1 | ??0.17 | ??437.0 |
| Kresoxim-methyl: tolelofos-methyl | ??20∶1 | ??0.14 | ??512.0 |
| Kresoxim-methyl: tolelofos-methyl | ??30∶1 | ??0.34 | ??208.2 |
| Kresoxim-methyl: tolelofos-methyl | ??40∶1 | ??0.37 | ??190.1 |
| Kresoxim-methyl: tolelofos-methyl | ??50∶1 | ??0.36 | ??194.7 |
| Kresoxim-methyl | ??-- | ??0.69 | ??-- |
| Tolelofos-methyl | ??-- | ??3.28 | ??-- |
The result of table 1 shows, the proportioning of kresoxim-methyl and tolelofos-methyl has synergistic effect to the cucumber rhizoctonia rot bacterium between 1: 50～50: 1 the time, and when especially proportioning was between 1: 30～20: 1, synergy was more remarkable, and co-toxicity coefficient is more than 300.By being mixed, can reaching and improve the medicament activity, reduce cost and delay the effect that the pathogen pesticide resistance produces.
Biologicall test example 2
Subjects is balsam pear wilt (Fusarium oxysporum).Take by weighing the former medicine of a certain amount of kresoxim-methyl, the former medicine of tolelofos-methyl, behind a certain amount of xylene soluble kresoxim-methyl, tolelofos-methyl, add Tween-80 again and a certain amount of aqua sterilisa is made into mother liquor.On the basis of mother liquor,, prepare the dilution of 7 series respectively for examination concentration by the trial test result.According to kresoxim-methyl: tolelofos-methyl is 50: 1,40: 1,30: 1,20: 1,10: 1,1: 1,1: 10,1: 20,1: 30,1: 40,1: 50 proportioning, the soup of preparation series concentration.
The mycelial growth rate method is adopted in test.Test, statistical method are with biologicall test example 1, and toxicity test the results are shown in Table 2.
Table 2 kresoxim-methyl tolelofos-methyl is to the Toxicity Determination result of balsam pear wilt
| Handle | The active ingredient mass ratio | ??EC 50(mg/L) | Co-toxicity coefficient |
| Kresoxim-methyl: tolelofos-methyl | ??1∶50 | ??0.76 | ??416.2 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶40 | ??0.67 | ??460.4 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶30 | ??0.63 | ??470.5 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶20 | ??0.59 | ??466.7 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶10 | ??0.42 | ??546.4 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶1 | ??0.19 | ??469.1 |
| Kresoxim-methyl: tolelofos-methyl | ??10∶1 | ??0.13 | ??425.4 |
| Kresoxim-methyl: tolelofos-methyl | ??20∶1 | ??0.12 | ??443.0 |
| Kresoxim-methyl: tolelofos-methyl | ??30∶1 | ??0.13 | ??403.4 |
| Kresoxim-methyl: tolelofos-methyl | ??40∶1 | ??0.11 | ??473.5 |
| Kresoxim-methyl: tolelofos-methyl | ??50∶1 | ??0.12 | ??432.3 |
| Kresoxim-methyl | ??-- | ??0.51 | ??-- |
| Tolelofos-methyl | ??-- | ??3.53 | ??-- |
The result of table 2 shows, the proportioning of kresoxim-methyl and tolelofos-methyl more than 400, has remarkable synergistic effect to balsam pear wilt co-toxicity coefficient between 1: 50～50: 1 the time.By being mixed, can reaching and improve the medicament activity, reduce cost and delay the effect that the pathogen pesticide resistance takes place.
Biologicall test example 3
Test material is phytophthora blight of pepper (Phytophthora capsici Leonian).Take by weighing the former medicine of a certain amount of kresoxim-methyl, the former medicine of tolelofos-methyl, behind a certain amount of xylene soluble kresoxim-methyl, tolelofos-methyl, add Tween-80 again and a certain amount of aqua sterilisa is made into mother liquor.On the basis of mother liquor,, prepare the dilution of 7 series respectively for examination concentration by the trial test result.According to kresoxim-methyl: tolelofos-methyl is 50: 1,40: 1,30: 1,20: 1,10: 1,1: 1,1: 10,1: 20,1: 30,1: 40,1: 50 proportioning, the soup of preparation series concentration.
The mycelial growth rate method is adopted in test.Test, statistical method are with biologicall test example 1, and toxicity test the results are shown in Table 3.
Table 3 kresoxim-methyl tolelofos-methyl is to the Toxicity Determination result of Phytophthora capsici germ
| Handle | The active ingredient mass ratio | ??EC 50(mg/L) | Co-toxicity coefficient |
| Kresoxim-methyl: tolelofos-methyl | ??1∶50 | ??1.42 | ??263.5 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶40 | ??1.46 | ??249.8 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶30 | ??1.63 | ??214.8 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶20 | ??1.02 | ??318.3 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶10 | ??1.24 | ??217.3 |
| Kresoxim-methyl: tolelofos-methyl | ??1∶1 | ??0.35 | ??295.5 |
| Kresoxim-methyl: tolelofos-methyl | ??10∶1 | ??0.26 | ??246.1 |
| Kresoxim-methyl: tolelofos-methyl | ??20∶1 | ??0.21 | ??292.9 |
| Kresoxim-methyl: tolelofos-methyl | ??30∶1 | ??0.25 | ??242.7 |
| Kresoxim-methyl: tolelofos-methyl | ??40∶1 | ??0.23 | ??262.0 |
| Kresoxim-methyl: tolelofos-methyl | ??50∶1 | ??0.22 | ??272.8 |
| Kresoxim-methyl | ??-- | ??0.59 | ??-- |
| Tolelofos-methyl | ??-- | ??4.19 | ??-- |
The result of table 3 shows, the proportioning of kresoxim-methyl and tolelofos-methyl more than 200, has remarkable synergistic effect to the phytophthora capsici co-toxicity coefficient between 1: 50～50: 1 the time.By being mixed, can reaching and improve the medicament activity, reduce cost and delay the effect that the pathogen pesticide resistance takes place.
Bactericidal composition of the present invention can be prepared into known method and be fit to any one formulation that agricultural is used, and reasonable formulation is missible oil, microemulsion, aqueous emulsion, suspending agent, wetting powder, water dispersible granules.Below describe with specific embodiment.
Embodiment 1:10% kresoxim-methyl tolelofos-methyl suspending agent
Kresoxim-methyl 5%
Tolelofos-methyl 5%
Sodium lignin sulfonate (dispersant) 10%
Xanthans (thickener) 2%
Bentonite (thickener) 1%
Calcium dodecyl benzene sulfonate (wetting agent) 1%
Glycerine (antifreeze) 5%
Water complements to 100%.
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding or high speed shear, obtain 10% kresoxim-methyl tolelofos-methyl suspending agent.
This embodiment is applied to prevent and treat the tomato damping off.10% kresoxim-methyl tolelofos-methyl suspending agent is pressed 75g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 90.5% and 90.7% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and 10 days, 20 days control efficiency is respectively 87.5%, 59.2% and 68.5%, 50.4% behind the medicine.The synergistic effect of the composite back of kresoxim-methyl and tolelofos-methyl is obvious, to the control efficiency of tomato damping off significantly better than single agent; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 2:21% kresoxim-methyl tolelofos-methyl suspending agent
Kresoxim-methyl 20%
Tolelofos-methyl 1%
Sodium lignin sulfonate (dispersant) 10%
Xanthans (thickener) 2%
Bentonite (thickener) 1%
Glycerine (antifreeze) 5%
Water complements to 100%.
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding or high speed shear, obtain 21% kresoxim-methyl tolelofos-methyl suspending agent.
This embodiment is applied to prevent and treat the tomato damping off.21% kresoxim-methyl tolelofos-methyl suspending agent is pressed 75g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 92.5% and 89.7% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and 10 days, 20 days control efficiency is respectively 85.5%, 61.2% and 63.5%, 53.4% behind the medicine.The synergistic effect of the composite back of kresoxim-methyl and tolelofos-methyl is obvious, to the control efficiency of tomato damping off significantly better than single agent; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 3:51% kresoxim-methyl tolelofos-methyl wetting powder
Kresoxim-methyl 1%
Tolelofos-methyl 50%
Lauryl sodium sulfate (wetting agent) 2%
Sodium lignin sulfonate (dispersant) 5%
White carbon black (filler) 10%
Kaolin (filler) complements to 100%
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of prescription, after ultrafine crusher is pulverized, promptly get 51% kresoxim-methyl tolelofos-methyl wetting powder.
This embodiment is applied to prevent and treat the balsam pear fusarium wilt.51% kresoxim-methyl tolelofos-methyl wetting powder is pressed 250g active ingredient/hectare, thin up soil spray, and the control efficiency of 10 days and 20 days is 90.6% and 95.1% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and the control efficiency of 10 days and 20 days is respectively 74.8%, 56.3% and 88.5%, 65.2% behind the medicine.It is obvious that kresoxim-methyl and tolelofos-methyl are joined the back synergistic effect, to the control efficiency of balsam pear fusarium wilt significantly better than single agent; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 4:51% kresoxim-methyl tolelofos-methyl wetting powder
Kresoxim-methyl 50%
Tolelofos-methyl 1%
Lauryl sodium sulfate (wetting agent) 2%
Sodium lignin sulfonate (dispersant) 5%
White carbon black (filler) 10%
Kaolin (filler) complements to 100%
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of prescription, after ultrafine crusher is pulverized, promptly get 51% kresoxim-methyl tolelofos-methyl wetting powder.
This embodiment is applied to prevent and treat the balsam pear fusarium wilt.51% kresoxim-methyl tolelofos-methyl wetting powder is pressed 75g active ingredient/hectare, thin up soil spray, and the control efficiency of 10 days and 20 days is 92.3% and 94.6% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and the control efficiency of 10 days and 20 days is respectively 80.8%, 66.3% and 85.5%, 63.7% behind the medicine.It is obvious that kresoxim-methyl and tolelofos-methyl are joined the back synergistic effect, to the control efficiency of balsam pear fusarium wilt significantly better than single agent; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 5:31% kresoxim-methyl tolelofos-methyl missible oil
Kresoxim-methyl 1%
Tolelofos-methyl 30%
N-Methyl pyrrolidone (cosolvent) 10%
Farming breast 1601
#(emulsifier) 5%
Farming breast 500
#(emulsifier) 5%
Dimethylbenzene (solvent) complements to 100%.
Active component, emulsifier and the solvent ratio in prescription is added in the mixing kettle successively, stir, make 31% kresoxim-methyl tolelofos-methyl missible oil.
This embodiment is applied to prevent and treat cucumber rhizoctonia rot.31% kresoxim-methyl tolelofos-methyl missible oil is pressed 250g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 90.8% and 90.2% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and 10 days, 20 days control efficiency is respectively 78.5%, 45.1% and 76.5%, 62.7% behind the medicine.The composite back synergistic effect of kresoxim-methyl and tolelofos-methyl is obvious, to the control efficiency of cucumber rhizoctonia rot significantly better than single agent, because the pharmacy effect raising obviously reduces when the amount ratio of active ingredient uses separately in the compound drug, thereby also alleviated pollution to environment; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 6:10% kresoxim-methyl tolelofos-methyl aqueous emulsion
Kresoxim-methyl 9.5%
Tolelofos-methyl 0.5%
N-Methyl pyrrolidone (solvent) 10%
Calcium dodecyl benzene sulfonate (emulsifier) 5%
Farming breast 600
#(emulsifier) 5%
Water complements to 100%
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; Under high-speed stirred, oil phase is mixed with water, make 10% kresoxim-methyl tolelofos-methyl aqueous emulsion.
This embodiment is applied to prevent and treat the compound root rot of cucumber.10% kresoxim-methyl tolelofos-methyl aqueous emulsion is pressed 75g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 92.9% and 93.4% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and 10 days, 20 days control efficiency is respectively 82.5%, 45.2% and 80.5%, 62.4% behind the medicine.The synergistic effect of the composite back of kresoxim-methyl and tolelofos-methyl is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of the compound root rot of cucumber; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 7:15% kresoxim-methyl tolelofos-methyl microemulsion
Kresoxim-methyl 10%
Tolelofos-methyl 5%
N-Methyl pyrrolidone (solvent) 10%
Isopropyl alcohol (solvent) 15%
Farming breast 500
#(emulsifier) 5%
Farming breast 1601
#(emulsifier) 5%
Water complements to 100%
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; Under agitation, oil phase is mixed with water, make 15% kresoxim-methyl tolelofos-methyl microemulsion.
This embodiment is applied to prevent and treat the compound root rot of beet.15% kresoxim-methyl tolelofos-methyl microemulsion is pressed 70g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 89.9% and 91.7% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl emulsifiable concentrate is pressed 500g active ingredient/hectare, thin up soil spray, 10 days, 20 days control efficiency is respectively 78.9%, 49.2% and 63.5%, 48.4% behind the medicine.The synergistic effect of the composite back of kresoxim-methyl tolelofos-methyl is obvious, to the control efficiency of the compound root rot of beet significantly better than single agent; Because the pharmacy effect raising obviously reduces when the amount ratio of active ingredient uses separately in the compound drug, thereby also alleviated pollution to environment; The composition preventive effect reduces the amplitude minimum after 20 days, and is longer than single agent lasting period.
Embodiment 8:90% kresoxim-methyl tolelofos-methyl water dispersible granules
Kresoxim-methyl 50%
Tolelofos-methyl 40%
Negel (dispersant) 0.5%
Sodium lignin sulfonate (dispersant) 2%
Lauryl sodium sulfate (wetting agent) 0.7%
Ammonium sulfate (disintegrant) 1.5%
Precipitated calcium carbonate (filler) complements to 100%.
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder through comminution by gas stream, add a certain amount of water mixing extruding again and make material, obtain 90% kresoxim-methyl tolelofos-methyl water-dispersible granules after the drying screening.
This embodiment is applied to prevent and treat watermelon blight.90% kresoxim-methyl tolelofos-methyl water-dispersible granules is pressed 100g active ingredient/hectare thin up soil spray, and the control efficiency of 10 days and 20 days is 93.6% and 92.1% behind the medicine.100g active ingredient/hectare pressed by 30% kresoxim-methyl wetting powder and 20% tolelofos-methyl missible oil is pressed 500g active ingredient/hectare, thin up soil spray, and the control efficiency of 7 days and 20 days is respectively 76.8%, 58.7% and 71.3%, 63.2% behind the medicine.The synergistic effect of the composite back of kresoxim-methyl and tolelofos-methyl is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of watermelon blight; The reduction amplitude minimum of composition preventive effect is longer than single agent lasting period after 20 days.
Claims (5)
1, a kind of bactericidal composition is characterized in that: active ingredient is kresoxim-methyl kind tolelofos-methyl, and the mass ratio of the two is 1: 50～50: 1.
2, bactericidal composition according to claim 1 is characterized in that: the mass ratio of kresoxim-methyl and tolelofos-methyl is preferably 1: 30～and 20: 1.
3, bactericidal composition according to claim 1 is characterized in that: to account for the gross weight percentage composition be 10%～90% to active ingredient weight in the composition.
4, according to each described bactericidal composition of claim 1-3, it is characterized in that: formulation is missible oil, microemulsion, aqueous emulsion, suspending agent, wetting powder, water dispersible granules.
5, bactericidal composition according to claim 1 is characterized in that: be applied to prevent and treat the root rot that pythium, Phytophthora, Rhizoctonia, Fusarium, Sclerotinia cause.
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| CN200910165913A CN101653148A (en) | 2009-08-12 | 2009-08-12 | Synergistic composition containing kresoxim-methyl |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361080A (en) * | 2017-08-31 | 2017-11-21 | 广西沙田仙人滩农业投资有限公司 | A kind of black scurf of potato bactericide containing tolelofos-methyl |
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2009
- 2009-08-12 CN CN200910165913A patent/CN101653148A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361080A (en) * | 2017-08-31 | 2017-11-21 | 广西沙田仙人滩农业投资有限公司 | A kind of black scurf of potato bactericide containing tolelofos-methyl |
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Application publication date: 20100224 |