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Insecticidal composition for control of athetis lepigone

An insecticidal composition and a technology of pyrethroid insecticides, which are applied in the field of pesticides, can solve the problems of large dosage, easy occurrence of drug resistance, and easy occurrence of phytotoxicity, so as to achieve safe use, improve control effect, and delay resistance Effect

Inactive Publication Date: 2012-10-24
董志平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for the current chemical control of Spodoptera moth larvae, which has a large dosage, is easy to produce drug resistance, and is easy to cause phytotoxicity when organophosphorus pesticides and cornfield herbicides are used within 7 days. A kind of insecticidal composition comprising emamectin benzoate and pyrethroid insecticides with wide application range, synergistic effect and low cost

Method used

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  • Insecticidal composition for control of athetis lepigone

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Source of test insects: The larvae of Spodoptera exigua were collected in the field in July 2010, and artificially reared indoors to obtain adults and raise the eggs to the required age for the test.

[0025] The test method is as follows:

[0026] Stomach toxicity test method: adopt leaf dip method for gastric toxicity test. Soak the amaranth leaves in the medicinal solution for 10~15s, take them out and dry them, use a punch with a diameter of 1cm to make round leaves, put them in a 12-well plate, 3 slices per hole, pick healthy and neat 2nd and 4th years old There are 1 larvae per hole, 30 larvae per hole, 3 repetitions, and water treatment is used as a control. Each treatment was kept in a 26°C constant temperature box, and the number of dead insects was counted 24 hours later.

[0027]

[0028] The resulting mortality rate is corrected by Abbott’s formula:

[0029]

[0030]

[0031] test results

[0032] It can be seen from Table 1 below that among the commonly tested inse...

Embodiment 3

[0058] Test site: Zang Village, Ningjin County, Xingtai.

[0059] Variety: The tested variety of summer corn was Zhengdan 958.

[0060] Test time: July 1, 2011.

[0061] The soil of the test plot is loam with medium fertility.

[0062] Test method: According to the dosage of the following medicament, spray with 45L of water. Before spraying, remove the sowing barley residue, and take care not to damage the corn seedlings. The specific processing is as follows:

[0063] A: Use 25mL 2% emamectin benzoate EC per mu;

[0064] B: Use 20mL 2% emamectin benzoate EC + 10mL 2.5% lambda-cyhalothrin EC (active ingredient weight ratio 1:0.63) per mu;

[0065] C: 15mL 2% emamectin benzoate EC + 20mL 2.5% lambda-cyhalothrin EC (active ingredient weight ratio 1: 1.67) per mu;

[0066] D: 10mL 2% emamectin benzoate EC + 30mL 2.5% lambda-cyhalothrin EC (active ingredient weight ratio 1:3.75) per mu;

[0067] E: Use 5mL 2% emamectin benzoate EC + 40mL 2.5% lambda-cyhalothrin EC (active ingredient weight rat...

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Abstract

The invention relates to an insecticidal composition, especially relates to an emamectin benzoate and chrysanthemum ester pesticide-containing insecticidal composition for control of athetis lepigone. The insecticidal composition has a significant synergetic effect in control of athetis lepigone on corns, improving control effect of medicines. The insecticidal composition has a low dosage, with a control effect for fourth instar larvae over 80% indoors, and 90% in the field. Neither of the two medicines used in the insecticidal composition belongs to organophosphorus, so the use of the insecticidal composition is relatively safe.

Description

technical field [0001] The present invention relates to the field of pesticides, in particular to an insecticidal composition, in particular to an insecticidal composition containing emamectin benzoate and pyrethroid insecticides for preventing and controlling Spodoptera moth combination. Background technique [0002] Two o'clock moth[ Athetis lepigone (M?schler, 1860)] is a new agricultural pest in my country's summer corn production areas. [0003] According to relevant records, in China, it was first discovered in Shijiazhuang, Hebei Province in July 2005 that Noctuid moth damages summer corn seedlings. The larvae bore into the base of the stem, causing the seedlings to wilt and die, or bite off the corn roots, leading to lodging. Serious lack of seedlings and monopoly, this is the first report in China. According to reports, in 2010, Noctuid moths commonly occurred in the central and southern summer corn areas of Hebei Province. In 2011, they broke out in Hebei, Henan...

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N43/90A01N53/06A01P7/04
Inventor 李立涛柴彦王新玉董立马继芳苏增朝刘磊董志平
Owner 董志平
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