Bromothalonil.cuppric nonyl phenolsulfonate compound preparation and application of bromothalonil.cuppric nonyl phenolsulfonate compound preparation to controlling of Ralstonia solanacearum

Abstract

The invention relates to a bactericidal composition. The bactericidal composition comprises pesticide active ingredients, namely bromothalonil and cuppric nonyl phenolsulfonate, wherein the weight ratio of the bromothalonil to the cuppric nonyl phenolsulfonate is (1:10)-(10:1); and the preferred weigh ratios are (1:8)-(8:1), (1:5)-(5:1), (1:2)-(2:1) and 3:2 (optimal) respectively. The compositioncan be prepared into various formulations such as micro-emulsion, emulsion in water, a suspension and the like; and in the preparation, active ingredients, namely the bromothalonil and the cuppric nonyl phenolsulfonate account for 2 to 70 percent, preferably 5 to 60 percent, more preferably 10 to 50 percent, further preferably 20 to 30 percent and most preferably 25 percent (optimal) of the totalweight of the preparation. Aids used for the processing of the preparation mainly comprise a solvent, a cosolvent, an emulsifier, a dispersant, an antifreezing agent, a stabilizer, a defoaming agent,a thickening agent and the like. The invention also relates to a method for controlling Ralstonia solanacearum by using the composition and application of the composition to the controlling of Ralstonia solanacearum.

Description

technical field [0001] The invention relates to a compound preparation of bromothalonil·nonylcopper, a method and application thereof for preventing and treating tobacco bacterial wilt, and belongs to the technical field of plant protection. Background technique [0002] Brom othalonil (brom othalonil), also known as Huojunqing, the chemical name is 1,2'-dibromo-2,4-dicyanobutane, and its structural formula is: [0003] [0004] Molecular formula C 6 h 6 Br 2 N 2 , molecular weight 265.94, CAS Registry No. 35691-65-7. Bromothalonil is a white solid with a slightly pungent smell, and the industrial product is a yellowish crystal. The melting point is 52.5-54.5°C. Insoluble in water, easily soluble in acetone, alcohol, benzene and other organic solvents. Bromothalonil is a low-toxicity pesticide according to the Chinese Pesticide Toxicity Classification Standard. The acute oral LD50 of male rats is 637mg / kg, and the acute oral LD50 of female rats is 414mg / kg. This v...

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Problems solved by technology

Generally, it can cause more than 5-50% reduction in production, or even complete production.

At present, there are few fungicides used to prevent and treat tobacco bacterial wilt in the market, and the effect is relatively poor. Although agricultural streptomycin has a good effect, because it is an antibiotic, it is not a medicament advocated by the state, and it has not been used in tobacco at present. Tobacco Bacterial Wilt

In addition, with the prolongation of the drug history, the control effect of a single agent on the bacteria gradually decreased.

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