Scab: Cladosporium cucumerinum Symptoms Scab lesions appear on all parts of the vine that are above ground. The first symptoms appear as light water soaked or pale green spots on the leaves. These spots are numerous and appear on and between veins. Similar elongated spots develop on petioles and stems. Gradually, the spots turn grey to white and become angular. The affected leaves near the tip of the vine may be stippled with dead and yellowish spots, stunted and crinkled. Fruits are infected at all stages of growth but is most susceptible while young. Fruit spots are grey, slightly sunken and about 2.0mm in dia. Management Crop rotation with corn once in 4 years. Grow resistant varieties like Highmoor and Maine no.2. Spray Mancozeb 0.2 %.
Scab lesions appear on all parts of the vine that are above ground.
The first symptoms appear as light water soaked or pale green spots on the leaves.
These spots are numerous and appear on and between veins. Similar elongated spots develop on petioles and stems.
Gradually, the spots turn grey to white and become angular.
The affected leaves near the tip of the vine may be stippled with dead and yellowish spots, stunted and crinkled.
Fruits are infected at all stages of growth but is most susceptible while young. Fruit spots are grey, slightly sunken and about 2.0mm in dia.
Crop rotation with corn once in 4 years.
Grow resistant varieties like Highmoor and Maine no.2.
