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Method for controlling black cutworm by combining entomopathogenic nematodes with matrine

A technology for entomopathogenic nematodes and cutworms, applied in the directions of botanical equipment and methods, applications, pesticides, etc., can solve the problems of environmental pollution, short duration of effect, and high nematode dosage, to improve the control effect and reduce application. Dosage, effect of reducing the degree of damage

Active Publication Date: 2015-01-28
SHANDONG INST OF POMOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other chemical insecticides, matrine has low insecticidal effect and short duration, so it cannot control pests in time
[0006] At present, the control of cutworms mainly relies on chemical insecticides, but the effect is not satisfactory, and it is easy to cause environmental pollution. Especially in cotton fields, methamidophos, chlorpyrifos, carbofuran, etc. are used, due to the high frequency and high Concentration application, the level of drug resistance of cutworms increases year by year
In the application of nematodes to control small cutworms, although previous studies can prove that nematodes have a certain control effect on small cutworms, the dose of nematodes used is high, and the insecticidal effect is low, which cannot achieve the purpose of controlling small cutworms.

Method used

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  • Method for controlling black cutworm by combining entomopathogenic nematodes with matrine
  • Method for controlling black cutworm by combining entomopathogenic nematodes with matrine
  • Method for controlling black cutworm by combining entomopathogenic nematodes with matrine

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Use the following methods to prevent and control small cutworms:

[0050] (1) Winter plowing and winter application, eliminate cutworm pupae or clean the garden, reduce the occurrence base of cutworms, choose loose and aerated soil for site preparation, plant corn seedlings, the corn variety is Nongda 108, and the row spacing is 0.2 m×0.6m, sow two seeds in each hole. Pull out the weak seedlings when the corn seedlings grow to 20 cm.

[0051] (2) Dilute matrine with water to prepare a matrine dilution, and mix the matrine dilution with an entomopathogenic nematode that meets the detection conditions Steinernema carpocapsae NC116 to obtain a nematode matrine suspension, nematode The nematode concentration in the matrine suspension is 800IJS / mL, and the matrine concentration is 0.6mg / L; the nematode matrine suspension is poured into the corn plant near the corn seedling stage and before the 3rd age of the cutworm, and the nematode dosage is 200 / small cutworm (applicable...

Embodiment 2

[0053] Other conditions are the same as Example 1, and the difference is that the amount of entomopathogenic nematodes is 300 / cutworm (the density suitable for cutworms is 5000~20000 / mu), and matrine in the nematode matrine suspension The concentration is 0.8mg / L.

Embodiment 3

[0055] Other conditions are the same as Example 1, and the difference is that the amount of entomopathogenic nematodes is 400 / small cutworm (the density suitable for small cutworms is 5000~20000 / mu), and the matrine in the nematode matrine suspension The concentration is 1mg / L.

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Abstract

The invention relates to a method for controlling black cutworm by combining entomopathogenic nematodes with matrine. The method comprises the following steps: adding water to dilute matrine in order to prepare a diluted matrine solution, and mixing the diluted matrine solution with entomopathogenic nematodes meeting detection conditions to prepare an entomopathogenic nematodes and matrine suspension, wherein the concentrations of the entomopathogenic nematodes and matrine in the suspension are 500-1000IJS / mL and 0.6-1.2mg / L respectively. The suspension is applied in the seedling stage of plants and the larval stage of the black cutworm in order to kill the black cutworm, and normal field management is carried out after the application. The control method improves the black cutworm control effect and reduces the dosages of the entomopathogenic nematodes and matrine in order to achieve the biological control of the black cutworm by reasonably utilizing the entomopathogenic nematodes.

Description

technical field [0001] The invention relates to the technical field of biological control, in particular to a method for controlling small cutworms by using entomopathogenic nematodes and matrine in combination. Background technique [0002] Small cutworms are pests of Lepidoptera and Noctuidae. Also known as soil silkworm, ground silkworm, black soil silkworm, black ground silkworm, ground shears, root cutting insects, etc., it is the most widely distributed and most harmful species of cutworms. Its food habits are mixed, and it can eat cotton, melons, beans, etc. According to records, it can damage more than 100 kinds of plants in 36 families. It is distributed in all provinces and autonomous regions of my country, especially in Henan, where the terrain is low and the water level is high. Cutworms mainly damage crop seedlings, cut off young stems, feed on young leaves and stems, and can bite seed buds, damage fruit ears, and feed on tubers, etc. Older larvae have a high r...

Claims

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Application Information

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IPC IPC(8): A01N63/00A01P7/04A01N43/90
Inventor 武海斌宫庆涛范昆张坤鹏孙瑞红
Owner SHANDONG INST OF POMOLOGY
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