Composite bactericide for controlling fruit and vegetable oomycetes diseases

Abstract

The invention relates to pesticides, in particular to composite bactericide for controlling fruit and vegetable oomycetes diseases. The composite bactericide consists of active elements, fillers and / or auxiliary agents, which is characterized in that the active elements consist of carboxylic acid amide bactericides and metiram, the weight ratio of the carboxylic acid amide bactericides to the metiram is (1-10):(10-100). The product form of the composite bactericide for controlling the fruit and vegetable oomycetes disease can be wettable powder or water dispersible granules. The composite bactericide for controlling the fruit and vegetable oomycetes diseases is suitable for controlling various oomycetes diseases of the fruits and vegetables, in particular controlling the potato late blight, the cucumber downy mildew, the grape downy mildew, the tomato late blight, the capsicum blight and the Chinese cabbage downy mildew; the composite bactericide has remarkable synergism and more action mechanisms and sites, and can effectively delay the generation and spread of oomycetes pesticide resistance; in addition, the invention has the advantages of wide disease controlling spectrum, high biologic safety, simple preparation method, low cost and remarkable economic benefit.

Description

technical field [0001] The invention relates to a pesticide, in particular to a compound fungicide for preventing and treating oomycete diseases of fruits and vegetables. Background technique [0002] Fruit and vegetable oomycete diseases are caused by the infection of flagellate subphylum Oomycetes pathogens, among which oomycetes such as Phytophthora, Peronospora, and Pythium are important pathogens of fruits and vegetables, endangering varieties such as Brassicaceae, Solanaceae, and Cucurbitaceae The main fruit and vegetable crops and fruit tree crops such as grapes cause damping-off, cotton rot, blight, cotton blight, downy mildew and root rot of fruits and vegetables, resulting in a substantial reduction in production or even a failure of harvest. Chemical control is the main method to prevent and control oomycete diseases and an important guarantee for high crop yield. At present, the fungicides used to prevent and control oomycete diseases in fruits and vegetables mai...

AI Technical Summary

Problems solved by technology

Looking at the current relevant information and literature, there is no research report on the combination of carboxylic acid amide fungicides and disenlian to form a compound fungicide for the prevention and treatment of oomycete diseases in fruits and vegetables

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