Application of pesticide compositions to preventing and treating wheat head blight

Abstract

The invention relates to novel application of pesticide compositions to preventing and treating wheat head blight. The pesticide compositions comprise, by weight, 1-150 parts of validamycin and 1-50 parts of difenoconazole. The novel application has the vantages that obvious synergistic effects can be realized by the pesticide compositions for preventing and treating the wheat head blight, effects for preventing and treating fusarium head blight can be obviously improved, and the capacity of human in the aspect of preventing and controlling the fusarium head blight for triticeae crops can be improved; pollution level of DON toxin on grains can be obviously lowered, the pesticide application quantity, the cost, the environmental pollution and pesticide residues can be reduced, difenoconazole resistance of pathogenic fungi of wheat can be delayed, and the wheat head blight can be prevented and treated; the persistence of the validamycin can be prolonged, the pesticide application frequencies can be reduced, powdery mildew, rust diseases, leaf blight and sheath blight of the wheat also can be treated by the pesticide compositions, the pesticide application labor cost can be reduced, the service dosage of chemical pesticides can be reduced to a great extent, and the pesticide compositions are environmentally friendly.

Description

【Technical field】 [0001] The invention belongs to the technical field of pesticides. More specifically, the present invention relates to the use of a pesticide composition in the prevention and treatment of wheat head blight, and also relates to the use of an agricultural fungicide in the prevention and treatment of wheat head blight, sheath blight, powdery mildew, rust and leaf blight. use in disease. 【Background technique】 [0002] Wheat and barley are the most important cultivated cereal crops in the world and one of the main food crops in China. Cereal crops are often threatened by fungal diseases such as smut, head blight, powdery mildew, sheath blight, rust and leaf blight. These diseases occur in the cereal growing areas of the world, seriously affecting the yield and quality of cereal agricultural products, especially the wheat head blight caused by Fusarium can not only cause devastating yield loss, but also in infected grains Produces toxins such as deoxynivalen...

AI Technical Summary

Problems solved by technology

[0008] With the long-term and extensive use of these selective fungicides with a single mechanism of action, drug resistance has emerged in the natural pathogenic fungal population, and the use effect has declined year by year

Through nearly 30 years of drug resistance monitoring, the inventor found that Fusarium fungi resistant to carbendazim and other benzimidazole fungicides in East China have formed a dominant group, and commonly used benzimidazoles such as carbendazim and thiophanate Fungicides have basically lost their value in the control of wheat head blight

At the same time, because the ability of drug-resistant bacteria to produce DON toxin is more than 5 times that of sensitive strains, it has increasingly aggravated the harm of wheat head blight and the risk of food safety in China.

In order to reduce yield loss, farmers often double the use of fungicides such as carbendazim, which further exacerbates resistance, pesticide residues, environmental pollution and food safety problems

Images