Abstract
Field experiments were conducted in 1981 and 1982 to determine the effects of southern green stink bug, Nezara viridula (L.), and rice stink bug, Oebalus pugnax (F.), on ‘Coker 68-15’ wheat, Triticum aestivum (L.), kernel yield and quality. Effects of feeding were measured for four stink bug infestation levels (0, 1, 3, and 6 sexed pairs of adults per 20 caged spikes) and two stages of grain maturity (milk and soft dough). At each infestation stage, germination, kernel weight,, and baking quality decreased as the number of sty let sheaths produced by both insects increased. N. viridula produced fewer sheaths than did O. pugnax , but caused similar levels of damage to kernel weight and quality. Both N. viridula and O. pugnax fed considerably less on kernels infested at soft dough. Significant ( P 2 adults per 20 spikes are rare. Thus, control measures are warranted only for milk stage stink bug infestations.
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