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Pesticide containing emamectin benzoate and malathion and application thereof

A technology of emamectin and benzoate, which is applied in the field of pesticides, can solve the problems of cotton products and environmental pollution, reduced control effect, and large dosage, and achieve the goals of reducing dosage, improving drug efficacy, and high synergistic effect Effect

Inactive Publication Date: 2013-09-25
INST OF PLANT PROTECTION HEBEI ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of medicaments for the prevention and control of mirid bugs in production, such as imidacloprid, cypermethrin, chlorpyrifos, fipronil, etc. The current problem is that due to long-term single drug use, mirid bugs have developed resistance to some chemicals, and the control effect is reduced. It is necessary to increase the amount used in production to control its occurrence and damage. A large amount of chemical pesticides are sprayed into crops and farmland, causing pollution to cotton products and the environment
Its disadvantage is that the dosage is large

Method used

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  • Pesticide containing emamectin benzoate and malathion and application thereof
  • Pesticide containing emamectin benzoate and malathion and application thereof
  • Pesticide containing emamectin benzoate and malathion and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The purpose of this experimental example is to study the synergistic effect of the mixed use of emamectin benzoate and malathion.

[0034] The indoor toxicity of the tested pesticides to the 3rd instar larvae of Lygus lucidum was determined by leaf dipping method. Dissolve each test agent with acetone and prepare a mother solution with a certain concentration. Dilute each of the above mother liquors with an aqueous solution containing 0.1% Tween 80 into 5 to 7 series of mass concentrations in an equiproportional gradient. Immerse fresh cotton leaves of the same size in the liquid medicine for 30 seconds, dry them naturally at room temperature, put them into a plastic box (8 cm in diameter, 5 cm in height), and insert lively, healthy, and 3rd instar larvae of the same size. , 15 heads per box, covered with a lid with a small hole. Distilled water containing 0.1% Tween 80 and 0.1% acetone was used as blank control, and repeated 3 times. Place them under the conditions ...

Embodiment 2

[0041] The purpose of this experimental example is to study 30% emamectin benzoate. Field efficacy test of malathion EC for controlling Lygus japonica.

[0042] Preparation of emulsifiable concentrates:

[0043] Weigh the raw materials with the following weight ratio

[0044] Emamectin benzoate: 3.5%

[0045] Malathion: 26.5%

[0046] Emulsifier JFC: 15%

[0047] Emulsifier Nongru 500# 5%

[0048] Solvent 1 Isopropanol 10%

[0049] Solvent 2 Toluene: balance.

[0050] In a container equipped with a thermometer and a stirrer, add emamectin benzoate and malathion original drug, ethanol and xylene, heat to 40°C, stir for 60 minutes, and then gradually add emulsifier OP -21 and stirred for 60 minutes, when the temperature dropped to 30°C, filtered to become 30% emulsifiable concentrate.

[0051] The prepared agent was sprayed on cotton, and the number of adults and nymphs of Lygus aeruginosa were investigated before and after spraying. Mark 50 cotton plants per plot, and ...

Embodiment 3

[0059] To prepare 20% EC:

[0060] First take the following raw materials by weight:

[0061] Emamectin benzoate: 1%

[0062] Malathion: 19.0%

[0063] Emulsifier OP-21: 25%

[0064] Solvent 1 Methanol: 15%

[0065] Solvent 2 Xylene: to 100%

[0066] Then, in a container equipped with a thermometer and a stirrer, add emamectin benzoate and malathion original drug, methanol and xylene, heat to 40°C, stir for 60 minutes, and then add evenly at a temperature of Mix the emulsifier OP-21 at 40°C and stir for 60 minutes. When the temperature drops to 20°C, the liquid medicine is a transparent substance solution, and becomes 20% emulsifiable concentrate after filtration.

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Abstract

The invention discloses a pesticide containing emamectin benzoate and malathion, which adopts emamectin benzoate and malathion as effective ingredients in a weight ratio of 0.5 to 5.0:10 to 50. The pesticide of the invention combines the emamectin benzoate and the malathion together so as to fully exert the respective advantages, the combination of the two types of emamectin benzoate and malathion has obvious synergistic effect and can achieve the effects of enhancing preventive and control effects and delaying the drug resistance, therefore, the pesticide can be applied to prevent and control the pests of plant bug, cotton bollworm and the like.

Description

technical field [0001] The invention relates to an insecticide containing emamectin benzoate and malathion and an application thereof, belonging to the field of pesticides. Background technique [0002] Mirid bugs, including Apolygus lucorum, Adelphocoris suturelis, Adelphocoris lineolatus and Adelphocorisfasciaticollis, are important pests to cotton. At present, there are many kinds of medicaments for the prevention and control of mirid bugs in production, such as imidacloprid, cypermethrin, chlorpyrifos, fipronil, etc. The current problem is that due to long-term single drug use, mirid gnats have developed resistance to some chemicals, and the control effect is reduced. It is necessary to increase the amount used in production to control its occurrence and damage. A large amount of chemical insecticides are sprayed into crops and farmland, causing pollution to cotton products and the environment. Therefore, there is an urgent need for efficient and environmentally friendl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N57/12A01N43/90A01P7/04
Inventor 潘文亮高占林李耀发党志红王吉强申妍杨继坤
Owner INST OF PLANT PROTECTION HEBEI ACAD OF AGRI & FORESTRY SCI