LATE BLIGHT OF POTATO
Disease - Late blight
Causal organism - Phytopthora infestans
Symptoms - In this, there are brown violet spots on leaves and stems are found. When the disease progresses, this rottenness gets to the tubers. 95% loss of the crop in our country is due to the late blight disease.
Control - For its prevention, it is beneficial to spray 3-5 times of 0.5% solution of dithane z-78 or dithane m-45. When the weather is cold and humid, spraying can be done even after seven days.
I.D.M. - Resistant varieties should be grown. Use only healthy and treated seeds. When giving more nitrogen in the crop, then there is a chances of spreading late blight disease.