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Soil fumigant compounded from dimethyl disulfide, nitrochloroform and lythidathion

A technology of dimethyl disulfide and chloropicrin, used in herbicides, algaecides, biocides, fungicides, etc., can solve the problem of weak broad-spectrum, poor nematode effect, and poor effect of pathogenic fungi and bacteria. problems, to achieve the effect of convenient application and crop safety

Active Publication Date: 2014-09-24
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of a single agent is not obvious, and the broad spectrum is not strong. For example, DMDS has a good effect on soil-borne nematodes, but it has a poor effect on pathogenic fungi and bacteria. Chloropicrin has a strong effect on pathogenic fungi and bacteria. Good effect, but less effective against nematodes

Method used

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  • Soil fumigant compounded from dimethyl disulfide, nitrochloroform and lythidathion
  • Soil fumigant compounded from dimethyl disulfide, nitrochloroform and lythidathion
  • Soil fumigant compounded from dimethyl disulfide, nitrochloroform and lythidathion

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Embodiment 1

[0019] The reagents used in this example are:

[0020] Dimethyl disulfide (DMDS, Shanghai Yuanji Chemical Co., Ltd.)

[0021] Chloropicrin (Dalian Dyestuff Chemical Co., Ltd.)

[0022] Thiazophos (Shanghai Yuanji Chemical Co., Ltd.)

[0023] The soil samples for testing are:

[0024] Tomatoes have been planted in Gu'an for more than five years, and soil samples with pathogenic bacteria and nematodes are carried in the greenhouse. The soil moisture is 18.71%, the soil bulk density is 0.86:, the texture of the soil is 81.824% of sand, 16.221% of silt, and 1.955% of clay. The fumigation time is 15 days, and the soil temperature during fumigation is 20°C-28°C.

[0025] The evaluation indicators and methods are:

[0026] Meloidogyne incognita., by centrifugation;

[0027] Fusarium spp., isolated by Komada method;

[0028] Phytophthora spp., isolated by Masago method;

[0029] Pyrenochaeta;

[0030] Verticillium dahliae;

[0031] Abutilon theophrasti, using vernier caliper...

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Abstract

The invention discloses a soil fumigant compounded from dimethyl disulfide, nitrochloroform and lythidathion and application of the soil fumigant, belonging to the technical field of pesticides for soil. The soil fumigant comprises the following active ingredients in percent by weight: 40-70 percent of dimethyl disulfide, 25-55 percent of nitrochloroform and 0.1-5 percent of lythidathion. The soil fumigant disclosed by the invention is capable of effectively controlling soil-borne pathogenic fungus, eelworms and weeds, so as to be broad in spectrum. The soil fumigant disclosed by the invention has a remarkable synergism for root-knot nematodes, fusarium fungi, phytophthora fungi, basidium fungi, colletotrichum fungi, cylindrocarpon fungi, pyrenochaeta fungi, rhizoctonia fungi and verticillium dahliae fungi, as well as field weeds, and is convenient to apply and safe in crops; meanwhile, three chemicals all have no residue in soil and are safe in crops.

Description

technical field [0001] The invention belongs to the technical field of soil pesticides, and specifically relates to a soil fumigant compounded with dimethyl disulfide, chloropicrin and thiazophos and its application in preventing and controlling root-knot nematodes and soil-borne diseases. Background technique [0002] Soil disinfection technology is a technology that can efficiently and quickly kill pathogenic bacteria, fungi, weeds, nematodes and underground pests in the soil and inhibit their growth. With the further expansion of greenhouse cultivation area and the continuous cultivation of high value-added crops, the problem of soil-borne diseases has become more and more prominent, often resulting in reduced production and lower product quality. Therefore, soil disinfection technology is one of the important measures that can effectively control soil-borne diseases. [0003] Traditional methods of preventing and controlling soil-borne diseases include disease-resistant...

Claims

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Application Information

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IPC IPC(8): A01N57/32A01N25/18A01P3/00A01P5/00A01P13/00A01N41/12A01N47/08
Inventor 王秋霞曹坳程颜冬冬毛连纲李园欧阳灿彬刘鹏飞沈锦郭美霞
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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