CN102696652A - Sterilizing composite for controlling pyricularia oryzae - Google Patents
Sterilizing composite for controlling pyricularia oryzae Download PDFInfo
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- CN102696652A CN102696652A CN2012102184104A CN201210218410A CN102696652A CN 102696652 A CN102696652 A CN 102696652A CN 2012102184104 A CN2012102184104 A CN 2012102184104A CN 201210218410 A CN201210218410 A CN 201210218410A CN 102696652 A CN102696652 A CN 102696652A
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- prochloraz
- tetramycin
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Abstract
The invention belongs to the technical field of pesticides, and particularly relates to a sterilizing composite containing tetramycin and prochloraz and application of the sterilizing composite in the aspect of controlling pyricularia oryzae. The sterilizing composite has the advantages that since the tetramycin and the prochloraz are adopted for compounding, the purpose of synergy is achieved, the controlling effect on the pyricularia oryzae is further improved, the used amount of drugs is reduced, the pesticide residue is reduced, and simultaneously the sterilizing composite plays a better role in delaying the drug resistance of pathogenic bacteria.
Description
Technical field
The invention belongs to technical field of pesticides, be specifically related to a kind of tetramycin and composite bactericidal composition of Prochloraz of containing, the application aspect the control rice blast.
Background technology
Tetramycin has another name called tetramycin, 11371 antibiotic; Derive from strain actinomycetes that separate in the soil sample of Wuzhou, Guangxi; Streptomyces hygroscopicus Wuzhou subspecies (Streptomyces ahygroscopicn wuzhouensisn subsp.) do not belong to actinomycetes, streptomyces.The metabolite that in the conk process, produces is generally through the through engineering approaches fermenting and producing.These article fungicidal spectrum is wide, and three main kind of 26 kinds of known disease funguses such as mastigomycetes, sac fungi and Deuteromycotina fungi are all had extremely strong killing action.Be suitable for the control of the multiple fungal disease of various crops.Especially to fruit tree putrefaction disease, spot defoliation; Cotton yellow (withered) disease of withering; Root rot; Rice blast and banded sclerotial blight, seedling blight; Genseng and pseudo-ginseng black spot; The tealeaves tea gall; Fruit white rot of grape, the climing rot of watermelon, root rot, the rotten special efficacy of stem foot.Can obviously promote simultaneously the callus healing, promote flourishing, the aging root system recovery of weak shoot root system, improve the crop disease-resistant ability and optimize crop quality.
Prochloraz (PROCHLORAZ) is efficient, wide spectrum, low toxicity type bactericide; Have prevention protection treatment and wait multiple action, be the imidazoles bactericide, work through the biosynthesis that suppresses sterol; No systemic action, splendid for the multiple diseases preventive effect that sac fungi and imperfect fungus cause.Adopt gene induced technology, the activated plant disease-resistant gene is expressed, and quick-acting is good, and the lasting period is long, conventional control gourd, fruit and vegetable anthracnose, the leaf spot used.Also can prevent and treat bakanae disease of rice, rice blast etc.
Above-mentioned two kinds of medicaments cause drug effect obviously to descend because long-term use separately causes the drug-fast generation of germ easily; Thereby cause dosage to rise greatly, the sprinkling cycle shortens, and result of use is poor; Increased cost, the use of a large amount of agricultural chemicals makes that the germ resistance is more serious; Also environment is affected, the medicament residue of agricultural product also increases, and has influence on health and the normal existence of the mankind, animal etc.; Tetramycin and Prochloraz are carried out composite use control rice blast, do not appear in the newspapers as yet both at home and abroad.
Summary of the invention
The objective of the invention is to provide a kind of and carry out composite bactericidal composition and application thereof by tetramycin and Prochloraz to the problems referred to above; Said composition plays synergistic effect through composite; Rice blast is had good control efficiency, simultaneously the pesticide resistance that delays pathogen is had better action
Among the present invention, the weight of the tetramycin of being mentioned and the weight of Prochloraz, active ingredient etc. all refer to the weight of rolling over after hundred, i.e. the weight of active principle.
The bactericidal composition that contains tetramycin and Prochloraz of the present invention, its active ingredient consists of tetramycin and Prochloraz, and the weight ratio of described tetramycin and Prochloraz is tetramycin: Prochloraz=0.1-2: 25～50.
As preferably, the weight ratio of described tetramycin and Prochloraz is tetramycin: Prochloraz=0.1-0.5: 25-40.
The aqueous emulsion of this bactericidal composition comprises following component by weight: tetramycin 0.1-2%, Prochloraz 25-50%, emulsifier 5-15%, cosolvent 5-20%, antifreezing agent 3-7%, antifoaming agent 0.5-3%, thickener 0-2.5%, water surplus.
Said cosolvent is one or both in toluene, xylol, solvent naphtha, cyclohexanone, dimethyl formamide, ethyl acetate, acetone or the vegetable oil.
Said emulsifier is nonionic surface active agent or anionic surfactant.
Said non-ionic surface active agent is one or more in phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy polyethenoxy ether, APES, APES formaldehyde condensation products, AEO, castor oil polyoxyethylene ether, polystyrene-based phenol formaldehyde resin APEO, phenethyl phenol polyethenoxy ether phosphate or the APES phosphate; Said anion surfactant is one or more in alkyl benzene calcium sulfonate, sodium alkyl benzene sulfonate or the C8-C20 sodium alkyl sulfate.
Said antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite or the urea.
Described antifoaming agent is organic silicone oil or isooctanol.
Described thickener is one or more in xanthans, gum Arabic, carboxymethyl cellulose, CMC or the polyvinyl alcohol.
This bactericidal composition is used to prevent and treat rice blast.
Beneficial effect of the present invention is: tetramycin and two kinds of bactericide of Prochloraz are carried out composite, because the mechanism of action is different between the two, inhale bacteriostatic activity in tetramycin has; Stop germ to be invaded and expansion, Prochloraz works through the biosynthesis that suppresses sterol, makes complex preparation have protection, treatment function concurrently; Enlarged fungicidal spectrum, thereby applied widely, composite composition has synergistic effect in certain proportion; Not only control efficiency is good; Reduced dosage and drug cost, reduced harmful effect, and delayed the drug-fast generation of germ greatly environment.This bactericidal composition can be used to prevent and treat diseases such as rice blast, melon dish anthracnose, has good control efficiency.
Studied the indoor virulence of the composite mixture of tetramycin and the different proportionings of Prochloraz with the mycelial growth rate method to rice Pyricularia grisea; Experimental technique adopts the abundant method calculating co-toxicity coefficient of Sun Yun (CTC) to estimate and uses effect with; The CTC value has synergistic effect greater than 120 o'clock mixtures; Less than 80 o'clock be antagonism, have summation action in the time of between 80～120.
Concrete grammar is following:
Get the soup for preparing and place 100ml 50-60 ℃ of PDA sterilising medium; Shake up, pour in the sterilization culture dish of diameter 60mm, after the cooled and solidified; Moving respectively delivers a child grows unanimity, diameter is the bacterium cake of 4mm; As blank, all operations all carries out sterile working at superclean bench with the sterilising medium that adds the equivalent coordinative solvent, and 3 repetitions are established in every processing.Put into 27 ℃ of constant incubators and cultivate after 3-8 days, adopt the right-angled intersection method to measure colony diameter, calculate bacteriostasis rate, EC
50, relevant parameter such as CTC, the relevant calculation formula is following:
Pure amount of growth=bacterium colony average diameter-bacterium cake diameter (0.4cm)
Bacteriostasis rate=[the pure amount of growth of (contrast pure amount of growth-handle pure amount of growth) * 100/ contrast] * 100%
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
Theoretical toxicity index TTI (AB)=percentage+TI (B) * B the percentage in mixture of TI (A) * A in mixture
Co-toxicity coefficient CTC=ATI (AB)/TTI (AB) * 100
Table 1 tetramycin and Prochloraz list mixture are to the toxicity test table of rice Pyricularia grisea
Visible by table 1; Tetramycin and Prochloraz are composite; Rice Pyricularia grisea is had indoor virulence preferably, and the CTC value of three each and every one proportionings shows that all above 120 these two bactericide have good synergistic effects under this proportioning; Simultaneously can find out that also different its synergistic effects along with tetramycin and Prochloraz compound proportion also are different in composition, mixed ratio is at 0.1-0.5: synergy is comparatively remarkable between the 25-40.
Embodiment
Below in conjunction with embodiment the present invention is described further, but the present invention is not limited thereto, the formulation preparation method among the embodiment is conventional method.
Embodiment 1:25.1% tetramycin prochloraz aqueous emulsion comprises following component by weight:
Blend together even oil phase, water by the said goods formula rate; Under the high-speed stirred water is joined oil phase or oil phase is joined water, make 25.1% tetramycin prochloraz aqueous emulsion.
Embodiment 2:40.2% tetramycin prochloraz aqueous emulsion comprises following component by weight:
Blend together even oil phase, water by the said goods formula rate; Under the high-speed stirred water is joined oil phase or oil phase is joined water, make 40.2% tetramycin prochloraz aqueous emulsion.
Test Example: the test of pesticide effectiveness of the mixture control rice blast of tetramycin and the different proportionings of Prochloraz
2 kinds of mixtures that the embodiment of the invention is obtained carry out the test of pesticide effectiveness, adopt the greenhouse pot culture paddy rice, measure the control efficiency of single mixture of tetramycin and Prochloraz to rice blast.When paddy rice one leaf wholeheartedly the time, select the blade of growing way uniformity to adopt manual sprayer to carry out foliar spray and handle, inoculate pathogen after 24 hours, preserve moisture and cultivate 7d " Invest, Then Investigate " result, the result sees table 2.
The control efficiency table of table 2 pair rice blast
| Supply the reagent agent | Dosage (μ g/mL) | Disease index | Control efficiency (%) |
| Embodiment 1 product | 200 | 11.49 | 83.87 |
| Embodiment 2 products | 200 | 10.96 | 84.61 |
| 0.5% tetramycin aqua | 200 | 12.87 | 81.93 |
| 45% prochloraz aqueous emulsion | 200 | 17.42 | 75.54 |
| The clear water contrast | —— | 71.23 | —— |
Can find out that from table 2 mixture preparation of tetramycin and Prochloraz can effectively be prevented and treated rice blast, and obviously be superior to the control efficiency of single agent.
Claims (9)
1. bactericidal composition that is used to prevent and treat rice blast, its active ingredient consists of tetramycin and Prochloraz, and the weight ratio of described tetramycin and Prochloraz is tetramycin: Prochloraz=0.1-2: 25-50.
2. bactericidal composition according to claim 1 is characterized in that the weight ratio of described tetramycin and Prochloraz is tetramycin: Prochloraz=0.1-0.5: 25-40.
3. bactericidal composition according to claim 1 is characterized in that, the aqueous emulsion of said composition comprises following component by weight: tetramycin 0.1-2%; Prochloraz 25-50%, emulsifier 5-15%, cosolvent 5-20%; Antifreezing agent 3-7%; Antifoaming agent 0.5-3%, thickener 0-2.5%, water surplus.
4. bactericidal composition according to claim 3 is characterized in that, said cosolvent is one or both in toluene, xylol, solvent naphtha, cyclohexanone, dimethyl formamide, ethyl acetate, acetone or the vegetable oil.
5. bactericidal composition according to claim 3 is characterized in that, said emulsifier is nonionic surface active agent or anionic surfactant.
6. bactericidal composition according to claim 5; It is characterized in that said nonionic surface active agent is one or more in phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy polyethenoxy ether, APES, APES formaldehyde condensation products, AEO, castor oil polyoxyethylene ether, polystyrene-based phenol formaldehyde resin APEO, phenethyl phenol polyethenoxy ether phosphate or the APES phosphate; Said anionic surfactant is one or more in alkyl benzene calcium sulfonate, sodium alkyl benzene sulfonate or the C8-C20 sodium alkyl sulfate.
7. bactericidal composition according to claim 3 is characterized in that, said antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite or the urea.
8. bactericidal composition according to claim 3 is characterized in that, described antifoaming agent 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 the polyvinyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102184104A CN102696652A (en) | 2012-06-29 | 2012-06-29 | Sterilizing composite for controlling pyricularia oryzae |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102184104A CN102696652A (en) | 2012-06-29 | 2012-06-29 | Sterilizing composite for controlling pyricularia oryzae |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103583532A (en) * | 2013-11-26 | 2014-02-19 | 辽宁微科生物工程有限公司 | Tetramycin complex and application |
| CN104585196A (en) * | 2013-11-26 | 2015-05-06 | 辽宁微科生物工程有限公司 | Tetramycin compound and application thereof |
| CN104585195A (en) * | 2013-11-26 | 2015-05-06 | 辽宁微科生物工程有限公司 | Tetramycin compound and application thereof |
| CN104621147A (en) * | 2013-11-26 | 2015-05-20 | 辽宁微科生物工程有限公司 | Tetramycin compound and application |
| CN104957153A (en) * | 2015-06-22 | 2015-10-07 | 广东中迅农科股份有限公司 | Pesticide composition containing tetramycin and sedaxane |
| CN113907083A (en) * | 2021-11-22 | 2022-01-11 | 天津市农业科学院 | Compound bactericide for preventing and treating pepper anthracnose |
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| CN101263822A (en) * | 2007-11-25 | 2008-09-17 | 江苏辉丰农化股份有限公司 | Bactericial composition for preventing and controlling rice blast of rice |
| CN101632367A (en) * | 2008-07-24 | 2010-01-27 | 辽宁省微生物科学研究院 | Application of biopesticide tetramycin in preventing and controlling Magnaporthe grisea |
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2012
- 2012-06-29 CN CN2012102184104A patent/CN102696652A/en active Pending
Patent Citations (2)
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| CN101263822A (en) * | 2007-11-25 | 2008-09-17 | 江苏辉丰农化股份有限公司 | Bactericial composition for preventing and controlling rice blast of rice |
| CN101632367A (en) * | 2008-07-24 | 2010-01-27 | 辽宁省微生物科学研究院 | Application of biopesticide tetramycin in preventing and controlling Magnaporthe grisea |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103583532A (en) * | 2013-11-26 | 2014-02-19 | 辽宁微科生物工程有限公司 | Tetramycin complex and application |
| CN104585196A (en) * | 2013-11-26 | 2015-05-06 | 辽宁微科生物工程有限公司 | Tetramycin compound and application thereof |
| CN104585195A (en) * | 2013-11-26 | 2015-05-06 | 辽宁微科生物工程有限公司 | Tetramycin compound and application thereof |
| CN104621147A (en) * | 2013-11-26 | 2015-05-20 | 辽宁微科生物工程有限公司 | Tetramycin compound and application |
| CN103583532B (en) * | 2013-11-26 | 2015-08-05 | 辽宁微科生物工程有限公司 | Tetramycin complex and application |
| CN104585196B (en) * | 2013-11-26 | 2016-08-17 | 辽宁微科生物工程股份有限公司 | Tetramycin complex and application |
| CN104585195B (en) * | 2013-11-26 | 2016-08-17 | 辽宁微科生物工程股份有限公司 | Tetramycin complex and application |
| CN104957153A (en) * | 2015-06-22 | 2015-10-07 | 广东中迅农科股份有限公司 | Pesticide composition containing tetramycin and sedaxane |
| CN104957153B (en) * | 2015-06-22 | 2018-06-19 | 广东中迅农科股份有限公司 | Composition pesticide containing tetramycin and fluorine azoles ring bacterium amine |
| CN113907083A (en) * | 2021-11-22 | 2022-01-11 | 天津市农业科学院 | Compound bactericide for preventing and treating pepper anthracnose |
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Application publication date: 20121003 |