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Mirobial source herbicide and its preparing method and use

A herbicide and adjuvant technology, applied in the field of pesticides, can solve the problems of rising populations of drug-resistant weeds, unsatisfactory selectivity, and herbicide-resistant weeds.

Inactive Publication Date: 2007-04-11
SHANGHAI PESTICIDE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since chemical herbicides began to be used in the 1940s, chemical herbicides have become an important means of weeding farmland to reduce labor intensity and improve work efficiency. At present, chemical herbicides occupy most of the market, but with the continuous application of chemical herbicides , has clearly exposed its disadvantages. First, the herbicide droplet drift, the volatilization of the liquid, the selectivity is not ideal, and the harm of the degradation product causes the phytotoxicity of the crops; secondly, the repeated use of the herbicide causes the population of drug-resistant weeds to increase. , the emergence of herbicide-resistant weeds and the increasingly serious environmental pollution, making the development of new herbicides more difficult and more expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the preparation of herbicidal active component

[0023] Glucose 3%, starch 5%, peanut cake powder 1%, soybean cake powder 2%, peptone 0.1%, yeast extract 0.4%, sodium chloride 0.2%, magnesium sulfate 0.5%, ammonium nitrate 0.2%, dipotassium hydrogen phosphate The proportion of 0.05% is made into a culture medium, the pH is adjusted to 7.2, and it is sterilized. Inoculate the Streptomyces Lavendulae CGMCC No.1368 strain growing on the Gaussian slant into the culture medium, and cultivate it at 28°C for 36-40 hours;

[0024] The culture is used as a seed, inoculated at a ratio of 5-20% in the fermentation broth composed of the above-mentioned culture medium, and cultured with aeration and stirring at 28° C. for 90-96 hours.

[0025] Get 10 kilograms of this fermented culture liquid, filter, obtain 1.5 kilograms of filter residues, after stirring and soaking with 4 kilograms of 80% aqueous acetone for 8 hours, filter and remove mycelia, after removing aceton...

Embodiment 2

[0026] Embodiment 2, preparation of wettable powder

[0027] Get 30 parts (weight ratio, hereinafter the same) of the tan oily matter I that obtains in embodiment 1 mix with 2 parts of sodium lignosulfonate, 4 parts of pull-off powder, 2 parts of sizing agent LS and 62 parts of diatomaceous earth, pulverize , That is, 100 parts of 30% wettable powder.

Embodiment 3

[0028] Embodiment 3, the preparation of emulsifiable concentrate

[0029] Mix 0.5 parts of I obtained in Example 1 with 10 parts of ethylene glycol, 20 parts of dimethylformamide, 28 parts of xylene and 41.5 parts of ethanol to obtain 100 parts of 0.5% emulsifiable concentrate;

[0030] 1 part of I obtained in Example 1 is mixed with 10 parts of ethylene glycol, 20 parts of dimethylformamide, 28 parts of xylene and 42 parts of ethanol to obtain 100 parts of 1% emulsifiable concentrate.

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Abstract

The invention relates to a new kind of herbicide with a effective ingredient which is primarily extracted from the metabolic of Streptomyces Lavendulae. Firstly the active herbicide ingredient is separated from the cultivated microorganism of the (Streptomyces Lavendulae) CGMCC No.1368. Then the final herbicide is formed with the selected carrier and auxiliary agent. Such herbicide is advanced in the low dosage, broad-spectrum effect and safety to the environment. It could be a high efficient herbicide both in the paddy field and glebe.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a herbicide with microbial metabolites as active ingredients, a preparation method thereof, and an application of the herbicide. Background technique [0002] Since chemical herbicides began to be used in the 1940s, chemical herbicides have become an important means of weeding farmland to reduce labor intensity and improve work efficiency. At present, chemical herbicides occupy most of the market, but with the continuous application of chemical herbicides , has clearly exposed its disadvantages. First, the herbicide droplet drift, the volatilization of the liquid, the selectivity is not ideal, and the harm of the degradation product causes the phytotoxicity of the crops; secondly, the repeated use of the herbicide causes the population of drug-resistant weeds to increase. , The emergence of herbicide-resistant weeds and the increasingly serious environmental pollution have m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/02A61P13/00
Inventor 陶黎明徐文平顾学斌旷文丰郭磊杨星陆迪生郑佳玲王磊张育雷庞鸿昌
Owner SHANGHAI PESTICIDE RES INST
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