Harm and Control Methods of the Licorice Seed Chalcid
Adults lay eggs on the seed coat of green fruits; after the larvae hatch, they immediately bore into and feed on the seeds, and pupate inside the seeds. After the adults emerge, they bite through the seed coat and escape. The infested seeds are eaten out into empty shells, and small round emergence holes are left on the seed coat and pods. This pest has a great impact on yield. Control methods: ① In winter, clear away residual leaves to reduce the source of the pest. ② Before sowing, the seeds must be treated, either by removing the insects or by dressing the seeds with carbaryl powder. ③ During the occurrence period, especially the green fruit stage, spray with pesticide.
Adults lay eggs on the seed coat of green fruits; after the larvae hatch, they immediately bore into and feed on the seeds, and pupate inside the seeds. After the adults emerge, they bite through the seed coat and escape. The infested seeds are eaten out into empty shells, and small round emergence holes are left on the seed coat and pods. This pest has a great impact on yield.
Control methods: ① In winter, clear away residual leaves to reduce the source of the pest. ② Before sowing, the seeds must be treated, either by removing the insects or by dressing the seeds with carbaryl powder. ③ During the occurrence period, especially the green fruit stage, spray with pesticide.