Turnip Alternaria Leaf Spot Control What Causes Alternaria Leaf Spot On Turnips
Symptoms of Alternaria Leaf Spots on Turnips Alternaria leaf spot of turnip shows up on leaves first, displaying small, dark brown or black spots with a yellow halo and concentric, target-like rings. The lesions eventually develop a thick buildup of spores and the centers of the holes may fall out, leaving a shot-hole appearance. The spots also show up on stems and blooms. The infection is frequently introduced on infected seed, but once established, it can live in the soil for years....