Two methods of killing underground pests of sweet potato

Sweet potatoes are damaged by underground pests, will be full of insects, can not be processed and eaten, and accelerate decay, resulting in a reduction in production. In production, the following methods can be taken in time for poisoning control in order to improve yield and quality. First, Benedict. During the growth and development of sweet potato, 1000 foliar solution was sprayed on the leaves every 15 days to wet all the leaves evenly, so that water droplets began to flow along the stems and leaves to the roots, and 3 colors were sprayed continuously for 5 times. Lesben is a highly permeable insecticide that spreads to the underground through vines, killing underground pests and protecting underground potato lumps. Second, sprinkle tea bran liquid. During the period of rapid expansion of sweet potato, the roots were drenched with 40ml 50 times tea bran solution for 3 times, each time 10ml 15kg per square meter for 10 days. Tea bran liquid can kill underground pests, supplement high-quality organic fertilizer in time, promote potato expansion, increase starch accumulation, increase yield and improve quality.