Complex pesticide for preventing and controlling drug-resistant prodenia litura fabricius

Abstract

The invention discloses a complex pesticide for preventing and controlling drug-resistant prodenia litura fabricius. The technical scheme is that: the weight ratio of 480ml / L chlorpyrifos, 50 percent phoxim, a synergist and water is 1:0.8-1.2:0.8-1.2:1,500-4,500; the complex pesticide in an amount which is 45-55kg is applied to leaves of cotton per 667 square meters; and the safety interval for human beings, animals and silkworms is 12 days. The complex pesticide has the advantages of easiness in preparation, wide raw material source, low price, low toxicity, low residue, no pollution and convenience in use, and can be directly sprayed to the leaves of the cotton. As shown by experiments, the prevention and control effect of the complex pesticide reaches 95 percent; and the complex pesticide is popularized and applied to about 10 hectares of cotton fields in yandong town of tinghu district of yancheng city, teyong town of sheyang county and the like, and satisfactory prevent and control effect is achieved.

Description

technical field [0001] The patent of the invention relates to a compound pesticide, in particular to a compound pesticide for controlling Spodoptera litura with strong drug resistance. Background technique [0002] Prodenia Litura Fabricius is an occasional pest with a wide range of hosts, which can harm more than 290 kinds of plants in 99 families such as cotton, vegetables, soybeans, mulberries, and lawns. With the change of environmental conditions, it gradually rises to become the main pest Pests, in recent years, there have been reports of serious damage in major cotton areas in China, and because of their strong drug resistance, once an outbreak occurs, it is extremely difficult to control. The 1-2 instars cluster on the back of cotton leaves, chewing on the lower epidermis and mesophyll, leaving only the upper epidermis, and disperse after 3 reams to cause damage. The severely damaged fields can eat up the cotton leaves, resulting in a significant decrease in yield, t...

AI Technical Summary

Problems solved by technology

The 1-2 instars cluster on the back of cotton leaves, chewing on the lower epidermis and mesophyll, leaving only the upper epidermis, and disperse after 3 reams to cause damage. The severely damaged fields can eat up the cotton leaves, resulting in a significant decrease in yield, thereby causing damage to cotton farmers. huge economic loss

Commonly used chemical pesticides for the prevention and control of cotton field pests such as 2000 times 25g / L deltamethrin EC, 20% fenvalerate EC, 4.5% beta-cypermethrin EC, 1% emamectin emamectin EC, 2% Abamectin EC, 480g / L chlorpyrifos EC, 1500 times 80% DIFE EC, 50% phoxim EC, etc. have single efficacy, only about 30-70% of the control effect

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