Population dynamics of stink bugs (Heteroptera: Pentatomidae) associated at various soybean phenological stages

The populations of phytophagous stink bugs may vary with cultivar and crop management. The aim of this study was to know the population dynamics of stink bugs Euschistus heros , Nezara viridula , and Piezodorus guildinii at different soybean phenological stages. Samples of each stink bug species were done in three soybean (Syn1059, P97R01, and M7110IPRO) cultivars conducted in two seasons. For three cultivars and two seasons, E. heros was the most abundant, followed by P. guildinii and N. viridula . The soybean phenology influenced stink bug population dynamics, mainly in the inflorescence emergence, flowering, development of fruits and seeds, and ripening of fruits and seeds stages. For soybean cultivars, Syn1059 and M7110IPRO were high colonized by stink bugs, while colonization in P97R01 was low suggesting susceptible differences between cultivars. The relationship between stink bug populations and soybean phenology can provide information to monitoring pest populations during these stages.