Scab is a fungal disease. The disease mostly harms the fruit in the late growth period of the fruit, and occurs on the fruit shoulder or the upward facing fruit surface. The lesions are nearly round, reddish brown, small, and the protrusions are herpetic. Many lesions on the fruit are connected into one piece, and the surface is rough, like a scab. The lesions generally only harm the epidermal tissue of the fruit and do not penetrate into the pulp.
Prevention methods are as follows:
① Bagging of young fruit: Bagging of young fruit begins 1 week after flowering withering to avoid dipping.
② Chemical treatment: Spray 50% carbendazim 800 times solution or 1:0.5:200 times Bordeaux mixture, or 80% thiophanate wettability to the tree crown from 2 weeks after flower withering to fruit expansion period (May to August). The powder is 1000 times liquid, sprayed 2 to 3 times, and the interval between spraying is about 20 days.
③ Agricultural control: remove pruned kiwifruit branches and litter, and burn them in a centralized way to reduce the parasitic places of pathogens.
