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New purposes of methomyl for control of athetis lepigone

A new use, methomyl technology, applied in the application, insecticide, animal repellent and other directions, can solve the problems of large dosage, easy to produce phytotoxicity, easy to produce drug resistance, etc., to achieve low dosage, use safe effect

Inactive Publication Date: 2012-10-24
GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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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 solution for the current chemical control of Spodoptera moth larvae, which has a large amount of medication, easy to produce drug resistance, and easy to cause phytotoxicity when organophosphorus pesticides and cornfield herbicides are used within 7 days. A new application of using methomyl to control Spodoptera exigua

Method used

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  • New purposes of methomyl for control of athetis lepigone
  • New purposes of methomyl for control of athetis lepigone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Insect source for the test: the larvae of Spodoptera spp. collected in the field in July 2010, artificially reared indoors, obtained adults and reared the eggs to the age required for the test.

[0021] The test method is as follows:

[0022] Gastric toxicity determination method: The gastric toxicity was determined by the method of soaking leaves. Soak the leaves of amaranth in the liquid medicine for 10-15 seconds, take them out and dry them in the air, use a hole puncher with a diameter of 1cm to make round leaves, put them into a 12-well plate, 3 pieces per hole, pick healthy and neat 2-year-old and 4-year-old There was one larvae of Spodoptera spp. per well, 30 larvae per treatment, and 3 repetitions, and the water treatment was used as the control. Each treatment was reared in a 26°C incubator, and the number of dead insects was counted after 24 hours.

[0023] The concentration of each agent used is the recommended concentration of the product. When compounding...

Embodiment 2

[0032] Test site: Zangcun, Ningjin County, Xingtai.

[0033] Variety: The tested variety of summer maize is Zhengdan 958.

[0034] Test time: June 30, 2011.

[0035] The soil of the test plot was loamy with medium fertility.

[0036] Test method: In this test, spraying is used to apply pesticides. Before spraying, it is necessary to remove the wheat straw residues around the corn seedlings on the wheat stubble between the ridges; 45kg of drug solution per mu, the specific dosage is as follows:

[0037] A: 60mL 77.5% dichlorvos EC for mu use;

[0038] B: 60mL 40% phoxim emulsifiable concentrate for mu;

[0039] C: 60mL 20% methomyl EC for mu;

[0040] D: Mu use 30mL 20% methomyl EC + 10mL 2% emamectin benzoate EC;

[0041] E: Mu use 30mL 20% methomyl EC + 20mL 4.5% beta-cypermethrin EC;

[0042] G: clean water treatment

[0043] 100m per treatment area 2 , repeated 3 times, and on the second day after spraying, all treatment areas were weeded with nicosulfuron.

[0044...

Embodiment 4

[0062] Test site: Zangcun, Ningjin County, Xingtai.

[0063] Variety: The tested variety of summer maize is Zhengdan 958.

[0064] Test time: July 5, 2011.

[0065] The soil of the test plot was loamy with medium fertility.

[0066] Test method: Use 5kg of fragrant wheat bran for each mu, mix with appropriate amount of water until moist, add various treatment chemicals, mix well, and sprinkle it along the ridge along the corn seedlings in the evening. The specific treatment is as follows:

[0067] A: Mu use 125mL 20% methomyl EC;

[0068] B: Mu use 100mL 20% methomyl EC + 10mL 2% emamectin benzoate EC (active ingredient weight ratio 100:1);

[0069] C: Mu use 75mL 20% methomyl EC + 20mL 2% emamectin benzoate EC (active ingredient weight ratio 37.5:1);

[0070] D: Mu use 50mL 20% methomyl EC + 30mL 2% emamectin benzoate EC (active ingredient weight ratio 16.67:1);

[0071] E: 25mL 20% methomyl emulsifiable concentrate + 40mL 2% emamectin benzoate emulsifiable concentrate ...

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Abstract

The invention relates to control of an agriculture insect, and especially relates to new purposes of methomyl for control of athetis lepigone. By using the methomyl to control athetis lepigone, the dosage of the methomyl is low. Under routine dosage of the methomyl, control effect of fourth instar larvae is over 80% indoors, which is equal to the effect of other medicaments such as phoxim and chlopyrifos. The control effect of the methomyl is over 90% in the field. Because the methomyl does not belong to organophosphorus, the methomyl is relatively safe in use.

Description

technical field [0001] The invention relates to the prevention and control of agricultural pests, in particular to a new application of using methomyl to prevent and control the spodoptera moth. 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, Shandong, Shanxi, Anhui, Jiangsu and other provinces, with an area of ​​more than 30 million m...

Claims

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Application Information

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IPC IPC(8): A01N47/24A01P7/04A01N43/90A01N53/08
Inventor 李立涛李素平许昊李秀芹董立马继芳刘磊姜京宇董志平
Owner GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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