What are the methods for controlling underground pests of sweet potatoes?
How to control underground pests of sweet potatoes? Please give guidance. During the period of rapid tuber expansion of sweet potatoes, drench the root area once every 10-15 days with a clarified infusion made from 25-30 times diluted superphosphate mixed with dry, clean plant ash, or with a 15-20 times diluted clarified tobacco leaf infusion, etc., for 2-3 consecutive drenches, applying about 5-6 kg per sq m of soil each time...
How to control underground pests of sweet potatoes? Please give guidance
During the period of rapid tuber expansion of sweet potatoes, drench the root area once every 10-15 days with a clarified infusion made from 25-30 times diluted superphosphate mixed with dry, clean plant ash, or with a 15-20 times diluted clarified tobacco leaf infusion, etc., for 2-3 consecutive drenches, applying about 5-6 kg per sq m of soil each time. Drenching when the soil is slightly moist after rain, or in the morning or evening, can kill the underground pests harming sweet potatoes and protect the crop. If an 80-100 times diluted magnesium sulfate aqueous solution can be added to the drench, the effect is even better: it can both improve the control effect, enhance the sweet potato's insect resistance, and promote rapid tuber expansion, increase starch accumulation, significantly raise yield, improve quality, and extend storability.
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