Method for improving control effect of entomopathogenic nematodes on Chinese chive maggots

A technology for entomopathogenic nematodes and leek maggots, which is applied in the fields of botanical equipment and methods, chemicals for biological control, animal repellents, etc., can solve the problem of high nematode dosage, inability to control leek maggots, and low insecticidal effect And other issues

Active Publication Date: 2015-11-25
SHANDONG INST OF POMOLOGY
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Problems solved by technology

In the application of nematodes to control leek maggots, although previous studies can prove that nematodes have a certain control effect on leek maggots, the dose of nematodes used is relatively high, and the insecticidal effect is low, which cannot achieve the purpose of controlling leek maggots

Method used

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  • Method for improving control effect of entomopathogenic nematodes on Chinese chive maggots
  • Method for improving control effect of entomopathogenic nematodes on Chinese chive maggots
  • Method for improving control effect of entomopathogenic nematodes on Chinese chive maggots

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Embodiment Construction

[0007] Technical scheme of the present invention is as follows:

[0008] A method for improving the effect of entomopathogenic nematode control on chive maggots, comprising steps as follows:

[0009] (1) Select loose and aerated soil for site preparation and plant crops;

[0010] (2) Dilute the entomopathogenic nematode synergist with water, prepare a diluent, mix the entomopathogenic nematode synergist dilution with the entomopathogenic nematode that meets the detection conditions to prepare a synergistic suspension, and the entomopathogenic nematode synergist Efficacy agent is thiamethoxam, and nematode concentration is 500~1000IJS / mL in synergistic suspension, and thiamethoxam concentration is 12~15mg / L; Use synergistic suspension to kill chive maggot larvae in the leek maggot larva stage, Normal field management after application;

[0011] The above test conditions should meet the following requirements:

[0012] Mix 12-15 mg / L thiamethoxam dilution with 500-1000 IJS / mL...

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Abstract

The invention relates to a method for improving a control effect of entomopathogenic nematodes on Chinese chive maggots. The method comprises the steps that thiamethoxam diluent is mixed with entomopathogenic nematodes which accord with detection conditions to prepare synergistic suspension, the concentration of the nematodes in the synergistic suspension ranges from 500 IJS/mL to 1000 IJS/mL, and the concentration of thiamethoxam ranges from 12 mg/L to 15 mg/L; the synergistic suspension is applied to killing of Chinese chive maggot larva when the Chinese chive maggots are in the larval phase, and normal field management is conducted after application is conducted; under field conditions, the method of adding low-concentration thiamethoxam for utilizing the entomopathogenic nematodes to control the Chinese chive maggots is adopted, the control effect of the entomopathogenic nematodes on the Chinese chive maggots of vegetables such as Chinese chives, green Chinese onions, shallots and garlic which are prone to being damaged by the Chinese chive maggots can be significantly improved, an obviously synergistic effect of the nematodes and the thiamethoxam on control of the Chinese chive maggots is embodied, usage amount of the thiamethoxam and other pesticides are significantly decreased, the baiting technique of a black sticky trap on imagoes is combined, the initial population number of a field is effectively decreased, and the purpose of controlling the Chinese chive maggots in a safe and nuisanceless mode can be really achieved.

Description

technical field [0001] The invention relates to a method for improving the effect of entomopathogenic nematodes in controlling chive maggots, and belongs to the technical field of biological control. Background technique [0002] Chive tardigrade is an important pest that harms leeks, mainly harming leeks, green onions, onions, shallots, garlic and other lily vegetables. Its larvae (commonly known as leek maggots) mainly gather at the roots of vegetables, eating pseudostems and bulbs and causing dead seedlings. The insect has 4 to 6 generations every year in the open field of North China, and the generations overlap seriously. The larvae dormant and overwinter in the top soil layer of 3 to 4 cm in the bulb of leek or around the root of the leek, and the most serious occurrence occurs in spring and autumn. Due to the cultivation of leeks in protected areas, the temperature and humidity conditions are suitable for the growth and development of leek maggots, so they can still ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/02A01P7/00A01G1/00A01G13/00A01N51/00
Inventor 武海斌范昆宫庆涛王中堂张坤鹏刘伟孙瑞红
Owner SHANDONG INST OF POMOLOGY
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