Amaranth is a diptera, Orthoptera insect. The damage is caused by the bulbs and soft stems that the larvae gather in the underground section of the leeks. The newly hatched larvae first damage the base of the leek leaf sheath and the upper end of the bulb. In the spring and autumn, the young stems of the leeks cause rot and the yellow leaves die. In summer, the larvae move down into the bulbs, and the bulbs rot in the heavy, and the whole leeks die.
1. A yellow armyworm board is hung within a range of 20 square meters to trap and kill adult worms.
2. It is possible to use 10% chlorpyrifos granules 1500-1800 g/ha and 2% imidacloprid granules 300-450 g/ha. Apply every 7-10 days for 2-3 times in succession.
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