In the cultivation process of yam, the growth of yam tuber will be affected and become curved due to excessive rain or insufficient watering. When the pest occurs, the yam tuber or basal meristem will be bitten by the insect, causing the insect eye or bifurcation, which will damage the leaves and tubers of the yam and affect the quality of the yam.

Early prevention, watering should be timely, appropriate amount, in case of heavy rain should promptly remove stagnant water, prevent excessive water, damage to the roots of yam. When applying organic fertilizer, it should be fully decomposed and mixed with a small amount of insecticide to kill the bacteria and pests in the organic fertilizer. After planting, new high-lipid film is sprayed regularly to prevent the spread of pathogens and improve the resistance of yam itself.