Control method of black shank in potatoes

Abstract

The invention discloses a control method of black shank in potatoes. The fact that early blight and late blight in the potatoes are features of pathogens to the black shank is determined by testing; preventive measures taken for preventing damage of the potatoes caused by the black shank start accordingly from the influence the early blight and late blight upon the planting yield and quality of the potatoes. The control method is simple, low in cost and easy for farmers to master. A great quantity of planting tests show that the method has the advantages that attack rate of the black shank is decreased by 86%, and benefit is increased by 32%.

Description

technical field [0001] The invention relates to the technical field of crop cultivation, in particular to a method for preventing and treating potato blackleg. Background technique [0002] Potatoes are affected by black shank, which has a serious impact on yield and quality. In order to minimize the loss, corresponding control measures must be taken. Early blight and late blight of potato are the pathogens of black shank, and the pathogenic bacteria of early blight are half-known fungi. The source of early blight can survive on plant residues or other host plants. The fungus produces spores on the surface of infected plants under wet conditions (rainfall, irrigation, prolonged dew), survives in a wide temperature range and is spread by wind. Early blight produces fewer spores than late blight, usually occurs earlier than late blight, but its growth spread is less dependent on prolonged wetness of the leaf surface and develops more slowly. The initial symptoms of the affe...

AI Technical Summary

Problems solved by technology

Early blight produces fewer spores than late blight, usually occurs earlier than late blight, but its growth spread is less dependent on prolonged wetness of the leaf surface and develops more slowly