Damage to Wheat Seed Quality and Yield by the Rice Stink Bug and Southern Green Stink Bug (Hemiptera: Pentatomidae)
Authors: Viator, H. P.; Pantoja, A.; Smith, C. M.
Source: Journal of Economic Entomology, Volume 76, Number 6, December 1983 , pp. 1410-1413(4)
Publisher: Entomological Society of America
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 < 0.05) reductions in germination, kernel weight, and kernel texture occurred when milk stage kernels were infested with as few as one pair of N. viridula or O. pugnax. In contrast, soft dough stage kernels tolerated the damage caused by this infestation level and none of the parameters measured were significantly (P <0.05) affected. Infestation levels >2 adults per 20 spikes are rare. Thus, control measures are warranted only for milk stage stink bug infestations.
Document Type: Research Article
Publication date: 1983-12-01
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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