Propiconazole-containing pesticide composition for preventing and treating wheat head blight and application of propiconazole-containing pesticide composition

Abstract

The invention relates to a pesticide composition for preventing and treating wheat head blight. The pesticide composition contains 1-150 parts of validamycin and 1-20 parts of propiconazole. The pesticide composition has an obvious synergistic effect when being used for preventing and treating wheat head blight; the prevention and treatment effect on the wheat head blight can be obviously improved; the capability of human for preventing and controlling the gibberellic disease of triticeae crops is improved; the pollution level of cereal DON toxin is significantly reduced; the dosage is reduced; the cost is reduced; the environment pollution and the pesticide residue are reduced; the medicine resistance of pathogenic fungus on propiconazole is relayed; the fusarium blight is prevented and treated; the lasting period of validamycin is shortened; powdery mildew, a rust disease, leaf blight and banded sclerotial blight are treated; the labor cost of application of the pesticide is reduced; the dosage of the chemical pesticide is greatly reduced; and the pesticide composition is friendly to environment.

Description

【Technical field】 [0001] The invention belongs to the technical field of pesticides. More specifically, the present invention relates to a pesticide composition for preventing and treating wheat head blight, and also relates to the use of the pesticide composition. 【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 scab, 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 deoxynivalenol (Trichothecenes, DON) and zearalenone (Zearalenon), which seriously affects the quality of food such as fermentation and wine making, and endangers the...

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

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