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Marigold straw biological organic pesticide and application thereof in prevention and treatment of root-knot nematodes

A technology of organic pesticides and straw biology, applied in the field of crop disease prevention and control, can solve the problems of high toxicity of chemical agents and high ecological risks, achieve good ecological and economic benefits, and achieve the effect of prevention and control

Active Publication Date: 2017-10-24
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Tomato root-knot nematode is an important soil-borne disease of greenhouse vegetables. According to statistics, tomato root-knot nematode causes tomato production to decrease by more than 30% every year, and tomato root-knot nematode has become resistant to many chemical agents. At the same time, the high toxicity of chemical agents , the ecological risk caused by easy residue is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Marigold straw bio-organic pesticide and its preparation

[0016] The marigold stalk bio-organic pesticide provided in this example is made by stacking and fermenting the VT inoculum, marigold stalk, rapeseed meal and water in a bucket in a weight ratio of 1:10:10:15 for 15 days, and the fermentation product ( The carbon-to-nitrogen mass ratio in the fermentation product is determined to be 30-35:1) After filtering or centrifuging, the obtained filtrate or supernatant is the marigold straw bio-organic pesticide.

Embodiment 2

[0017] Example 2 Marigold straw bio-organic pesticide and its preparation

[0018] The marigold stalk bio-organic pesticide provided in this example is made by stacking and fermenting the VT inoculum, marigold stalk, rapeseed meal and water in a bucket in a weight ratio of 1:8:10:11 for 15 days, and the fermentation product ( The carbon-to-nitrogen mass ratio in the fermentation product is determined to be 20-22:1), and the filtrate or supernatant obtained after filtering or centrifuging is the marigold straw bio-organic pesticide.

Embodiment 3

[0019] Example 3 Marigold straw bio-organic pesticide and its preparation

[0020] The marigold stalk bio-organic pesticide provided in this example is made by stacking and fermenting the VT inoculum, marigold stalk, rapeseed meal and water in a bucket in a weight ratio of 3:10:12:15 for 15 days, and the fermentation product ( The carbon-to-nitrogen mass ratio in the fermentation product is determined to be 38-40:1) After filtering or centrifuging, the obtained filtrate or supernatant is the marigold straw bio-organic pesticide.

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PUM

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Abstract

The invention provides a novel marigold straw biological organic pesticide and application thereof in prevention and treatment of root-knot nematodes. The marigold straw biological organic pesticide is prepared from a VT bactericide, marigold straw, rapeseed dregs and water in a weight ratio of (1-3):(8-10):(10-12):(11-15) through the steps of carrying out room-temperature stacking fermentation for 15 days in an open container and then carrying out filtration or centrifugation. Root-knot nematodes can be effectively prevented and treated by spraying the organic pesticide or the diluent thereof on plant leaves or at plant roots.

Description

technical field [0001] The invention relates to the field of crop disease prevention and control, in particular to marigold stalk bio-organic pesticides and their application in controlling root-knot nematodes. Background technique [0002] Tomato root-knot nematode is an important soil-borne disease of greenhouse vegetables. According to statistics, tomato root-knot nematode causes tomato production to decrease by more than 30% every year, and tomato root-knot nematode has become resistant to many chemical agents. At the same time, the high toxicity of chemical agents , the ecological risk caused by easy residue is relatively large. Therefore extracting natural nematicide active substances in plants is an inevitable trend in the development of agricultural production today. Since the 1980s, phytophytologists have successively discovered that the metabolites of hemlock, marigold, mugwort, yellow chrysanthemum, fennel, and hemp have good contact killing effects on 2nd instar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P5/00
CPCA01N65/00A01N65/12
Inventor 杨合法李季张泽宇
Owner CHINA AGRI UNIV
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