Compound bactericide for mainly treating grey mould of fruits and vegetables

Abstract

The invention relates to a pesticide, in particular to a compound bactericide for mainly treating grey mould of fruits and vegetables. The compound bactericide consists of active ingredients, padding and / or an auxiliary agent, wherein the active ingredients consist of Fludioxonil and other bactericide in a weight proportion of 1-50:1-50, and other bactericide is one or mixture of Boscalid, Pyrimethanil, Procymidone, Pyraclostrobin and chlorothalonil. The product made of the compound bactericide for mainly treating the grey mould of fruits and vegetables is generally wettable powder, water dispersible granules and suspending agent. The compound bactericide is suitable for preventing and controlling grey mould of various fruits and vegetables, has remarkable synergic effect, long persistence, novel action mechanism and more action sites, and can effectively delay the occurrence and development of drug resistance of grey mould bacteria. The compound bactericide is simple in preparation method, and has high biological safety and remarkable economic benefit.

Description

technical field [0001] The invention relates to a pesticide, in particular to a compound fungicide for mainly treating gray mold of fruits and vegetables. Background technique [0002] Botrytis cinerea is one of the important diseases in the production process of fruit and vegetable crops. The occurrence of botrytis cinerea has a great impact on fruit and vegetable crops, and the damage is serious. The agents currently used to control gray mold of fruit and vegetable crops can be mainly classified as follows: [0003] Mancozeb, thiram, chlorothalonil, etc., have a broad bactericidal spectrum, protective fungicides, and a wide range of application, they cannot effectively protect new branches and leaves, and the control effect is poor; benzimidazole fungicides: internal Absorbing broad-spectrum fungicides, represented by carbendazim, after long-term frequent use, pathogenic bacteria resistance commonly occurs, and the efficacy has been greatly reduced; dicarboximide fungicid...

AI Technical Summary

Problems solved by technology

[0003] Mancozeb, thiram, chlorothalonil, etc., have a broad bactericidal spectrum, protective fungicides, and a wide range of application, they cannot effectively protect new branches and leaves, and the control effect is poor; benzimidazole fungicides: internal Absorbing broad-spectrum fungicides, represented by carbendazim, after long-term frequent use, pathogenic bacteria resistance commonly occurs, and the efficacy has been greatly reduced; dicarboximide fungicides: representative varieties include iprodione and procymidone , after being used in production for many years, Botrytis cinerea also develops drug resistance to varying degrees; N-phenylcarbamate fungicides: systemic fungicides, the representative variety Dithofencarb is often used in combination with carbendazim, The use of carbendazim-dimethocarb mixture plays an important role in controlling the resistance of Botrytis cinerea to carbendazim, but after many years of application, Botrytis cinerea has developed dual drug resistance; anilinopyrimidine fungicides: internal Absorbing fungicide, special effect on Botrytis cinerea, representative varieties are pyrimethanil and cyprodinil. After several years of application in production, there have been a large number of reports of Botrytis cinerea resistance; nicotinamide fungicides: systemic broad-spectrum Fungicide, the representative agent is boscalid, which has a high control effect on gray mold, powdery mildew, early blight and sclerotinia, and is used to control cucumber gray mold. It is mixed with kresoxim-methyl It is used to prevent and control powdery mildew in crops such as strawberries, cucumbers and melons; pyridinamine fungicides: efficient and safe broad-spectrum fungicides. Mildew, sclerotinia, gray mold and scab, etc., have a long residual period and strong spore removal effect. China is only registered for the control of potato late blight; pyrrole fungicides: non-systemic broad-spectrum fungicides Fludioxonil, a representative variety, is used abroad to prevent gray mold, early blight, rhizoctonia-induced blight, sclerotinia and peach brown rot in fruits, vegetables and ornamental crops. In China, fludioxonil and its The mixture with metalaxyl is mainly used for seed dressing to prevent and control seed-borne and soil-borne diseases of wheat, corn, potato, etc.

[0004] At present, in addition to single agents, there are also a large number of mixed agents (such as carbendazim-dimethocarb mixture, pyrimethanil-carbendazim, dimethocarb-chlorothalonil, methyl sulforaphane·dimethocarb, pyrimethanil·thiram, pyrimethanil·chlorothalonil, etc.), but due to the resistance of Botrytis cinerea to a single agent and the frequent application of mixtures, each mixture has a negative effect on gray Mildew control effect is greatly reduced

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