Application of pesticide composition with synergism and decrement effect in prevention and treatment of fusarium blight

Abstract

The invention relates to a new application of a pesticide composition for preventing and treating fusarium blight. 1-150 parts by weight of validamycin and 1-20 parts by weight of prothioconazole are used for preventing and treating fusarium blight per mu and have obvious synergism, the effect of preventing and treating the fusarium blight can be improved remarkably, and abilities of human in prevention and control of the fusarium blight of triticeae crops are improved; and the validamycin and prothioconazole composition is used for preventing and treating the fusarium blight of the triticeae crops, pollution level of grain DON toxin can further be reduced remarkably, pesticide dosage is reduced, cost is lowered, environmental pollution and pesticide residue are reduced, and development of pesticide resistance of pathogenic fungi of wheat is delayed; meanwhile, the new application of the pesticide composition for preventing and treating fusarium blight has the advantages that the lasting period of the validamycin is prolonged, using frequency of pesticide is reduced, powdery mildew of cereals, rust disease, leaf blight and sheath blight can also be treated, and pesticide use cost and labor cost are reduced; and use dosage of chemical pesticide is greatly reduced, and the pesticide composition is 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 synergistic and reduced-volume pesticide composition in the control of wheat scab, and also relates to the use of an agricultural fungicide in the control of wheat scab. 【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 s...

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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