Combined effect of bugs and fungi on the dropping of pods and the yield components of soyabean (Glycine max (L.) Merrill).
Data obtained from studies on soyabean in Rio Grande do Sul, Brazil, in 1974 on the joint effects of attack by pentatomids (Nezara viridula (L.), Piezodorus guildinii (Westw.), Edessa meditabunda (F.) and Dichelops spp.) and fungi occurring after flowering showed that the bugs were a major cause of an increase in the number of pods that fell prematurely, an increase in the numbers of empty pods/plant, a decrease in the numbers of beans/pod and a reduction in seed weight. Fungi and the interaction of bugs and fungi had a significant influence only on seed weight. None of the factors studied affected the numbers of pods/plant.