Integrated Control techniques of garlic Leaf Blight

Shandong is the main garlic production area, garlic relative to other vegetables, fewer diseases. However, in recent years, a relatively rare new disease-garlic leaf blight appeared in garlic areas, and the incidence of fierce, serious harm. Once this disease occurs, it can cause a large reduction in production.

1. Symptom identification The disease mainly harms leaves and leaf sheaths. The infected leaves can be divided into two types: one is the acute withered type, which mainly occurs in the initial infection stage, the leaf tip is dark brown, and many dark purple-brown oblique parallel stripes are formed on it, the serious disease spots extend to 1/3~4/5 of the whole leaf, or the whole leaf dries up and dies;

The other is leaf spot type, in the early stage of the disease appeared on the leaves of short strip small erosion spots, slightly depressed, after the rapid expansion of the disease spots, into fusiform to long oval, tissue necrosis, depression, mostly purple-brown, dark central color, but also some were milky white. When it occurs, the whole field dies after 10 - 15 days.