Plant herbicide

A herbicide and plant technology, applied in the field of pesticides, can solve the problems of unbalanced formulation development, delayed effect of botanical pesticides, and high toxicity.

Inactive Publication Date: 2018-02-27
韦玉国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, the number of production enterprises is large and scattered. Dozens or even hundreds of enterprises with the same active ingredient herbicide have obtained registration and production qualifications in China; fourth, the registered products on different crops are uneven, and those registered in soybean, citrus, and tea The number of products is large, while the number of registered products of crops such as vegetables is relatively small, or even no medicine is available
Issues such as few created products, slow update of active ingredients, unbalanced development of dosage forms, serious homogeneity of product registration, etc. are more prominent
In addition, due to the long-term, excessive, and repeated use of herbicides, the succession of weed communities, the increase in the proportion of difficult-to-control weeds, and the growing problem of weed resistance
[0005] At present, due to the fact that botanical herbicides are still in the primary development stage in my country, some pharmacological mechanisms are still unclear and the production process is not mature enough, botanical pesticides generally have the problem of "delayed action", which is not in line with the "speed" psychology of farmers today. To adapt, most farmers still choose to use highly toxic and high residue chemical pesticides to kill weeds. In addition, the current high cost of botanical pesticides also restricts their popularization and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of herbicide for plants, by weight, the herbicide includes material composition: 3 parts of 9-carbonyl-10,11-dehydroeelanone, 5 parts of walnut quinone, 10 parts of ragweed extract, tobacco pipe grass 6 parts of extract, 1 part of azadirachtin, 1 part of triacontanol, 0.5 part of sodium pyromellitate, and 1 part of emulsifier.

[0021] Wherein, the emulsifier is selected from polyethylene glycol.

[0022] Among them, the preparation method of the ragweed extract is as follows: take the ragweed and use 90% ethanol for reflux extraction once, each time for 30 minutes, filter, combine the filtrates, recover the solvent, and let it stand at 2°C for 6 hours , centrifuge, take the supernatant, and adjust the ratio of liquid to material to 1:1 to obtain the ragweed extract.

[0023] Among them, the preparation method of the tobacco pipe grass extract is as follows: take ragweed and use petroleum ether to reflux extract once for 20 minutes each time, filter, combine the...

Embodiment 2

[0025] A kind of herbicide for plants, by weight, the herbicide includes material composition: 12 parts of 9-carbonyl-10,11-dehydroeelanone, 12 parts of walnut quinone, 18 parts of ragweed extract, tobacco pipe grass 16 parts of extract, 8 parts of azadirachtin, 4 parts of triacontanol, 3 parts of sodium pyromellitate, and 4 parts of emulsifier.

[0026] Wherein, the emulsifier is selected from sodium dodecylsulfonate.

[0027] Wherein, the preparation method of the ragweed extract is as follows: take the ragweed and carry out reflux extraction with 98% ethanol by volume fraction for 3 times, each time for 90 minutes, filter, combine the filtrate, reclaim the solvent, and let it stand for 12 hours under the environment of 8° C. , centrifuge, take the supernatant, and adjust the ratio of liquid to material to 2:1 to obtain the ragweed extract.

[0028] Wherein, the preparation method of the tobacco pipe grass extract is as follows: take ragweed and carry out reflux extraction ...

Embodiment 3

[0030] A kind of herbicide for plants, by weight, the herbicide includes material composition: 6 parts of 9-carbonyl-10,11-dehydroeelanone, 7 parts of walnut quinone, 12 parts of ragweed extract, tobacco pipe grass 9 parts of extract, 2 parts of azadirachtin, 2 parts of triacontanol, 1 part of sodium pyromellitate, and 1.5 parts of emulsifier.

[0031] Wherein, the emulsifier is selected from fatty acid polyoxyethylene ether.

[0032] Wherein, the preparation method of the ragweed extract is as follows: take the ragweed and carry out reflux extraction with 98% ethanol by volume fraction for 3 times, each time for 90 minutes, filter, combine the filtrate, reclaim the solvent, and let it stand for 12 hours under the environment of 8° C. , centrifuge, take the supernatant, and adjust the ratio of liquid to material to 2:1 to obtain the ragweed extract.

[0033] Wherein, the preparation method of the tobacco pipe grass extract is as follows: take ragweed and carry out reflux extr...

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PUM

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Abstract

The invention relates to the technical field of pesticides, in particular to a plant herbicide. The plant herbicide is prepared from the following materials in parts by weight: 3-12 parts of 9-carbonyl-10,11-dehydroageraphorone, 5-12 parts of juglone, 10-18 parts of a ragweed extract, 6-16 parts of a carpesium cernuum extract, 1-8 parts of azadirachtin, 1-4 parts of triacontanol, 0.5-3 parts of pyromellitic sodium and 1-4 parts of an emulsifying agent. The plant herbicide provided by the invention has the characteristics of rapid response, obvious weeding effect, no pesticide residue, and lowpossiblity of causing drug resistance and accumulation of toxic and side effects.

Description

【Technical field】 [0001] The invention relates to the technical field of pesticides, in particular to a plant herbicide. 【Background technique】 [0002] With the gradual advancement of my country's modern agriculture and the transformation of large-scale and intensive planting, the demand for herbicides has gradually increased, and the amount of herbicides has increased significantly, and the proportion of herbicides in pesticide products has shown an increasing trend. The current registered herbicide products in my country have the following characteristics: First, the active ingredients of the registered products are mainly old products with a high degree of similarity. The proportion of newly created herbicide products is relatively small; second, the development trend of diversification of dosage forms is not obvious, and the number of registered products with EC as dosage form has remained high in the past 6 years. Third, the number of production enterprises is large an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01N43/90A01N35/06A01N31/02A01P13/00
Inventor 韦玉国
Owner 韦玉国
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