ウコンノメイガによる葉の食害がダイズの生育と収量に及ぼす影響

抄録

Damage to soybeans infested by larvae of the bean webworm, Pleuroptya ruralis (Scopoli), was evaluated. In the soybean plants whose leaves had a >80% infestation rate at the early pod-development stage, the stems became thin in contrast to those whose leaves had a <10% infestation rate. Moreover, in the former, the numbers of pods and seeds per plant and the weight of seeds decreased, resulting in the yields of about half of the latter.