条件筛选
-
Harmless production technology for early spring potato-stevia-autumn cabbage
This spring has seen more low-temperature and low-light days, which favors the occurrence of cabbage sclerotinia rot. Vegetable growers are urged to take control measures early to reduce the damage. 1. Symptoms and characteristics: After seedlings are infected, water-soaked light brown lesions appear on the leaves, with indistinct edges, and the diseased tissue soft-rots, causing damping-off. When plants are infected during the head-forming stage, on the stem bases near the ground...