Alternaria Leafspot primarily affects which crop group?

Alternaria Leafspot primarily affects which crop group?

• A. Cole Crops
• B. Fruits
• C. Grains
• D. Root Crops

Answer: (A)

Alternaria leaf spot is most commonly associated with cruciferous crops—the cole crops. The pathogens behind this disease, including Alternaria brassicicola and Alternaria brassicae, specialize on Brassicas such as cabbage, broccoli, cauliflower, kale, and related greens, making these crops the primary hosts in many growing regions. Symptoms typically start as small brown to tan spots on the leaves, sometimes with a yellow halo, and can coalesce into larger necrotic areas under warm, humid conditions when spores are easily dispersed by rain splash and wind. Although Alternaria can affect other crop groups, including fruits, grains, and root crops, the disease is most economically significant and characteristically associated with cole crops, hence the emphasis on that crop group. Proper management focuses on reducing leaf wetness and crop debris to limit inoculum and on rotating away from brassicas when feasible.

Alternaria leaf spot is most commonly associated with cruciferous crops—the cole crops. The pathogens behind this disease, including Alternaria brassicicola and Alternaria brassicae, specialize on Brassicas such as cabbage, broccoli, cauliflower, kale, and related greens, making these crops the primary hosts in many growing regions. Symptoms typically start as small brown to tan spots on the leaves, sometimes with a yellow halo, and can coalesce into larger necrotic areas under warm, humid conditions when spores are easily dispersed by rain splash and wind. Although Alternaria can affect other crop groups, including fruits, grains, and root crops, the disease is most economically significant and characteristically associated with cole crops, hence the emphasis on that crop group. Proper management focuses on reducing leaf wetness and crop debris to limit inoculum and on rotating away from brassicas when feasible.