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A method for improving the effect of entomopathogenic nematodes on controlling chive maggots

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

Active Publication Date: 2018-05-11
SHANDONG INST OF POMOLOGY
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  • Description
  • Claims
  • Application Information

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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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  • A method for improving the effect of entomopathogenic nematodes on controlling chive maggots
  • A method for improving the effect of entomopathogenic nematodes on controlling chive maggots
  • A method for improving the effect of entomopathogenic nematodes on controlling 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 the effect of entomopathogenic nematodes on controlling chive maggots. A synergistic suspension is obtained by mixing a thiamethoxam dilution with entomopathogenic nematodes meeting the detection conditions, and the concentration of nematodes in the synergistic suspension is 500-1000IJS / mL, the concentration of thiamethoxam is 12-15mg / L; the synergistic suspension is used to kill the maggot larvae in the larval stage of the leek maggot, and normal field management is carried out after application; under field conditions, the entomopathogenic nematode is used to control the maggot maggot The method of adding low-concentration thiamethoxam can significantly improve the effect of nematodes on leeks, scallions, onions, shallots, garlic and other vegetable crops that are easily harmed by leek maggots. The control of nematodes and thiamethoxam on leek maggots shows The obvious synergistic effect can significantly reduce the usage of thiamethoxam and other insecticides, combined with the trapping and killing technology of adults with black sticky boards, it can effectively reduce the number of insect populations in the field, so that the prevention and control of leek maggots can truly achieve the goal of safety and pollution-free.

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 Patents(China)
IPC IPC(8): A01N63/02A01P7/00A01G22/35A01G13/00A01N51/00
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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