CN103651391A - Bactericidal composition for preventing and treating powdery mildew of cucumbers - Google Patents
Bactericidal composition for preventing and treating powdery mildew of cucumbers Download PDFInfo
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- CN103651391A CN103651391A CN201210332500.6A CN201210332500A CN103651391A CN 103651391 A CN103651391 A CN 103651391A CN 201210332500 A CN201210332500 A CN 201210332500A CN 103651391 A CN103651391 A CN 103651391A
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- bactericidal composition
- ningnanmycin
- composition according
- azoles alcohol
- powdery mildew
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Abstract
The invention belongs to the technical field of pesticides, and specifically relates to a bactericidal composition containing ningnanmycin and hexaconazole and application of the bactericidal composition in preventing and treating powdery mildew of cucumbers. The bactericidal composition is compounded by adopting ningnanmycin and hexaconazole to achieve a synergistic effect purpose, so that prevention and treatment effect on powdery mildew of cucumbers is further improved, use amount of drugs is reduced and pesticide residue is lowered; and meanwhile, the bactericidal composition has a good effect in delaying drug resistance of pathogenic bacteria.
Description
Technical field
The invention belongs to the technical field of agricultural chemicals, be specifically related to a kind of Ningnanmycin and composite bactericidal composition of own azoles alcohol of containing, in the application preventing and treating aspect powdery mildew of cucumber.
Background technology
Ningnanmycin streptomycete 16A-6 bacterial strain is a new variant of streptomyces noursei, names as Strepcomces noursei var. xichangensis, and the antibiotic 16A-6I of its generation is the Cystosine nucleocide type antibiotics of finding first, names as Ningnanmycin.This antibiotic is a kind of low toxicity, low-residual, nothing " three cause " and accumulation problems, novel pesticide free from environmental pollution, to bacterial blight of rice relative control effect, it is 70% left and right, high reaches 90%, effect of increasing production is 10-20%, high reaches 35%, and it is all very remarkable to diseases prevention, the effect of increasing production of the powdery mildews such as wheat, vegetables, flowers in addition, also fine to small round sclerotial disease of rice, Olive peacock's eye disease, shot hole and tobacco mosaic preventive effect.
Own azoles alcohol (PROCHLORAZ) belongs to azoles fungicide, sterol demethylation inhibitor, and the disease that fungi especially Basidiomycota and Ascomycota are caused has protection and the therapeutic action of broad spectrum activity.Destroy and stop the biosynthesis of the cell membrane important composition composition ergosterol of germ, cause cell membrane not form, make germ dead.There is interior suction, protection and therapeutic activity.Especially disease Basidiomycetes and Ascomycetes being caused has excellent protection and eradicant action as powdery mildew, rust, scab, brown spot, anthracnose etc.Rice sheath blight disease is had to good preventive effect.Suitable crop and safety fruit tree be as apple, grape, banana, vegetables (melon and fruit, capsicum etc.), peanut, coffee, cereal crop and ornamental plants etc.Under recommended dose, use, to environment, crop safety.
Above-mentioned two kinds of medicaments are used separately due to long-term, easily cause the drug-fast generation of germ, cause drug effect obviously to decline, thereby cause dosage greatly to rise, the sprinkling cycle shortens, and result of use is poor, increased cost, the use of a large amount of agricultural chemicals, makes germ resistance more serious, also environment is affected, the medicament residue of agricultural product also increases, have influence on health and the normal existence of the mankind, animal etc., Ningnanmycin and own azoles alcohol are carried out to composite use and prevent and treat powdery mildew of cucumber, there is not yet report both at home and abroad.
Summary of the invention
The object of the invention is to provide a kind of for the problems referred to above and carry out composite bactericidal composition and application thereof by Ningnanmycin and own azoles alcohol, said composition plays synergistic effect by composite, powdery mildew of cucumber is had to good control efficiency, to delaying the pesticide resistance of pathogen, have good effect simultaneously
In the present invention, the Ningnanmycin of mentioning and the weight of own azoles alcohol are, the weight of active ingredient etc. all refer to the weight after folding hundred, i.e. the weight of active principle.
Bactericidal composition containing Ningnanmycin and own azoles alcohol of the present invention, its active ingredient consists of Ningnanmycin and own azoles alcohol, and the weight ratio of described Ningnanmycin and own azoles alcohol is, Ningnanmycin: own azoles alcohol=0.1-2:25～50.
As preferably, the weight ratio of described Ningnanmycin and own azoles alcohol is, Ningnanmycin: own azoles alcohol=0.1-0.5:25-40.
The aqueous emulsion of this bactericidal composition, comprises following component by weight: Ningnanmycin 0.1-2%, own azoles alcohol 25-50%, emulsifier 5-15%, cosolvent 5-20%, antifreezing agent 3-7%, defoamer 0.3-3%, thickener 0-2.5%, water surplus.
Described cosolvent is one or both in toluene, dimethylbenzene, solvent naphtha, cyclohexanone, dimethyl formamide, ethyl acetate, acetone or vegetable oil.
Described emulsifier is nonionic surface active agent or anionic surfactant.
Described non-ionic surface active agent is one or more in phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy polyethenoxy ether, alkylphenol polyoxyethylene, alkylphenol polyoxyethylene formaldehyde condensation products, fatty alcohol-polyoxyethylene ether, castor oil polyoxyethylene ether, polystyrene-based phenol formaldehyde resin APEO, phenethyl phenol polyethenoxy ether phosphate or alkylphenol polyoxyethylene phosphate; Described anion surfactant is one or more in alkyl benzene calcium sulfonate, sodium alkyl benzene sulfonate or C8-C20 sodium alkyl sulfate.
Described antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite or urea.
Described defoamer is organic silicone oil or isooctanol.
Described thickener is one or more in xanthans, gum Arabic, carboxymethyl cellulose, CMC or polyvinyl alcohol.
This bactericidal composition is used for preventing and treating powdery mildew of cucumber.
Beneficial effect of the present invention is: Ningnanmycin and two kinds of bactericide of own azoles alcohol are carried out composite, because the mechanism of action between the two is different, Ningnanmycin has prophylactic treatment activity, stop germ to be invaded and expansion, own azoles alcohol belongs to sterol demethylation inhibitor, make complex preparation have protection concurrently, treatment function, expanded fungicidal spectrum, thereby applied widely, composite composition has synergistic effect in certain proportion, not only control efficiency is good, dosage and drug cost have been reduced, reduced the harmful effect to environment, and greatly delayed the drug-fast generation of germ.This bactericidal composition, can be used to prevent and treat the diseases such as melon and land for growing field crops powdery mildew, has good control efficiency.
At indoor employing seedling pot-culture method, measure Ningnanmycin and own azoles alcohol bactericide list, the indoor virulence of mixture to powdery mildew of cucumber bacterium.At greenhouse pot culture cucumber seedling to the 2-3 leaf phase, by designer drug agent dose, carry out foliar spray processing, after 24 hours, inoculate powdery mildew of cucumber bacterium, and moisturizing is cultivated in incubator, investigation result when the blank of not dispenser is fully fallen ill, calculates control efficiency with disease index.With DPS data processing software, carry out statistical analysis, calculate the EC50 of each medicament, adopt the abundant method of Sun Yun to calculate co-toxicity coefficient (CTC) and evaluate mixed effect: mixture has synergistic effect when CTC value is greater than 120; Being less than at 80 o'clock is antagonism; In the time of between 80～120, there is summation action.
The EC50*100 of the EC50/B agent of toxicity index TI(B)=standard agent A
The EC50*100 of the EC50/AB of actual toxicity index ATI (AB)=A
The percentage of percentage+TI (B) the * B of theoretical toxicity index TTI (AB)=TI (A) * A in mixture in mixture
Co-toxicity coefficient CTC=ATI(AB)/TTI(AB) * 100
Table 1 Ningnanmycin and the toxicity test table of own azoles alcohol list mixture to powdery mildew of cucumber germ
| Reagent agent | Active ingredient weight ratio | EC50（mg/L） | Co-toxicity coefficient (CTC) |
| Ningnanmycin | —— | 1.5 | —— |
| Own azoles alcohol | —— | 450 | —— |
| Ningnanmycin: own azoles alcohol | 0.1：25 | 245.12 | 153.60 |
| Ningnanmycin: own azoles alcohol | 0.5：40 | 62.21 | 154.19 |
| Ningnanmycin: own azoles alcohol | 2：50 | 28.10 | 128.11 |
From table 1, Ningnanmycin and own azoles alcohol are composite, powdery mildew of cucumber germ is had to good indoor virulence, the CTC value of three each and every one proportionings is all over 120, show that these two bactericide have good synergistic function under this proportioning, also can find out that its synergistic effect of difference along with Ningnanmycin and own azoles alcohol compound proportion is also different in composition, mixed ratio synergy between 0.1-0.5:25-40 is comparatively remarkable simultaneously.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited thereto, and the formulation preparation method in embodiment is conventional method.
Embodiment 1:25.1% Ningnanmycin hexaconazole aqueous emulsion, comprises following component by weight:
Ningnanmycin 0.1%
Own azoles alcohol 25%
Alkyl naphthalene formaldehyde condensate sulfonates 3%
Polyoxyethylene nonylphenol ether 3%
Xanthans 0.3%
Benzoic acid 0.1%
Organosilan defoamer 0.3%
Water surplus
By the said goods formula rate, blend together even oil phase, water; Under high-speed stirred, water joined to oil phase or oil phase is joined to water, making 25.1% Ningnanmycin hexaconazole aqueous emulsion.
Embodiment 2:40.5% Ningnanmycin hexaconazole aqueous emulsion, comprises following component by weight:
Ningnanmycin 0.5%
Own azoles alcohol 40%
Alkyl naphthalene formaldehyde condensate sulfonates 3%
Polyoxyethylene nonylphenol ether 3%
Xanthans 0.3%
Benzoic acid 0.1%
Organosilan defoamer 0.3%
Water surplus
By the said goods formula rate, blend together even oil phase, water; Under high-speed stirred, water joined to oil phase or oil phase is joined to water, making 40.5% Ningnanmycin hexaconazole aqueous emulsion.
Test example: Ningnanmycin and the mixture of the different proportionings of own azoles alcohol are prevented and treated the test of pesticide effectiveness of powdery mildew of cucumber
2 kinds of mixtures that the embodiment of the present invention is obtained carry out the test of pesticide effectiveness, adopt greenhouse pot culture cucumber, the control efficiency of single mixture of mensuration Ningnanmycin and own azoles alcohol to powdery mildew of cucumber.When greenhouse pot culture cucumber seedling is to the 2-3 leaf phase, by designer drug agent dose, carry out foliar spray processing, after 24 hours, inoculate powdery mildew of cucumber bacterium, and moisturizing is cultivated in incubator, investigation result when the blank of not dispenser is fully fallen ill, calculates control efficiency with disease index.The results are shown in Table 2.
The control efficiency table of table 2 pair powdery mildew of cucumber
| Reagent agent | Dosage (μ g/mL) | Disease index | Control efficiency (%) |
| Embodiment 1 product | 200 | 11.58 | 83.74 |
| Embodiment 2 products | 200 | 10.87 | 84.74 |
| 0.5% Ningnanmycin aqua | 200 | 12.51 | 82.44 |
| 45% hexaconazole aqueous emulsion | 200 | 18.04 | 74.67 |
| Clear water contrast | —— | 71.23 | —— |
As can be seen from Table 2, the mixture preparation of Ningnanmycin and own azoles alcohol can effectively be prevented and treated powdery mildew of cucumber, and is obviously better than the control efficiency of single dose.
Claims (9)
1. for preventing and treating a bactericidal composition for powdery mildew of cucumber, its active ingredient consists of Ningnanmycin and own azoles alcohol, and the weight ratio of described Ningnanmycin and own azoles alcohol is, Ningnanmycin: own azoles alcohol=0.1-2:25-50.
2. bactericidal composition according to claim 1, is characterized in that, the weight ratio of described Ningnanmycin and own azoles alcohol is, Ningnanmycin: own azoles alcohol=0.1-0.5:25-40.
3. bactericidal composition according to claim 1, it is characterized in that, the aqueous emulsion of said composition comprises following component by weight: Ningnanmycin 0.1-2%, own azoles alcohol 25-50%, emulsifier 5-15%, cosolvent 5-20%, antifreezing agent 3-7%, defoamer 0.3-3%, thickener 0-2.5%, water surplus.
4. bactericidal composition according to claim 3, is characterized in that, described cosolvent is one or both in toluene, dimethylbenzene, solvent naphtha, cyclohexanone, dimethyl formamide, ethyl acetate, acetone or vegetable oil.
5. bactericidal composition according to claim 3, is characterized in that, described emulsifier is nonionic surface active agent or anionic surfactant.
6. bactericidal composition according to claim 5, it is characterized in that, described nonionic surface active agent is one or more in phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy polyethenoxy ether, alkylphenol polyoxyethylene, alkylphenol polyoxyethylene formaldehyde condensation products, fatty alcohol-polyoxyethylene ether, castor oil polyoxyethylene ether, polystyrene-based phenol formaldehyde resin APEO, phenethyl phenol polyethenoxy ether phosphate or alkylphenol polyoxyethylene phosphate; Described anionic surfactant is one or more in alkyl benzene calcium sulfonate, sodium alkyl benzene sulfonate or C8-C20 sodium alkyl sulfate.
7. bactericidal composition according to claim 3, is characterized in that, described antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite or urea.
8. bactericidal composition according to claim 3, is characterized in that, described defoamer is organic silicone oil or isooctanol.
9. bactericidal composition according to claim 3, is characterized in that, described thickener is one or more in xanthans, gum Arabic, carboxymethyl cellulose, CMC or polyvinyl alcohol.
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| CN201210332500.6A CN103651391A (en) | 2012-09-11 | 2012-09-11 | Bactericidal composition for preventing and treating powdery mildew of cucumbers |
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| CN201210332500.6A CN103651391A (en) | 2012-09-11 | 2012-09-11 | Bactericidal composition for preventing and treating powdery mildew of cucumbers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015160619A1 (en) * | 2014-04-16 | 2015-10-22 | Bayer Cropscience Lp | Compositions comprising ningnanmycin and a fungicide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015160619A1 (en) * | 2014-04-16 | 2015-10-22 | Bayer Cropscience Lp | Compositions comprising ningnanmycin and a fungicide |
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Application publication date: 20140326 |