Recently, some peasant friends have reported that the sweet potatoes are not sweet potatoes. The analytical answers are as follows: In short, the empty sweet potato trees should be the main prevention, early detection and symptomatic remedy for different conditions.
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The sweet potato empty tree is generally divided into the following situations: First, due to the accumulation of severely degraded virus in the variety, only the “burdock root†is not dried. The solution is to replace the new variety in time. Second, because of the infection of root rot, sweet potato cannot grow normally, and it is necessary to rotate crops. Early use of pesticides prevents root rot, and it is too late to find empty trees in late growth stages. Third, some varieties have poor resistance, and the large trees bully small trees and form small trees and no potatoes. Fourth, it is prosperous, a large number of nutrients supply stems and leaves growth, nutritional disorders, so to control the water and fertilizer, with paclobutrazol and other control.