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Selection of disease-resistant varieties and disease-free seed potatoes, seedlings can be soaked in warm soup at 51 °C ~ 54 °C, before planting seeds with a new high-fat membrane isolation pests, seedlings with pure soil to cultivate disease-free strong seedlings. The chemical soaked potato shoots can be soaked with 100% liquid of 50% phoxim EC for 10 minutes. The seedlings were transplanted with phoxim or triazophos microcapsules when transplanted, and the phoxim microcapsules were also used for 5 to 10 cm at the bottom of the root to soak 5 to 10 minutes to treat the seedlings.
How sweet potatoes prevent stem nematodes
A: Concentrate the destruction of pathogens during nursery, planting, and harvesting.