Effect of Stink Bug-Damaged Soybean Seeds on Germination, Emergence, and Yield12

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Abstract
Stink bug-damaged seeds from 17 soybean varieties were separated into 4 arbitrary categories depending upon the amount of visual damage to the seeds. The categories of damage were: none or check―no visual damage; light―seeds showing punctures but without shriveling of the seedcoat; moderate―seeds with some shriveling of the seedcoat; and heavy―extensive shriveling of the seedcoat. Soybean seed stained using a tetrazolium technique showed that with regard to viability the location of a stink bug puncture is probably more important than the number of punctures. One puncture in the radicle-hopocotyl axis of the seed can prevent germination. Greenhouse tests showed highly significant differences among the arbitrary categories with respect to emergence and yield. A small-plot field test using the ‘Bossier’ variety showed no significant difference in yield between the lightly damage seeds and those with no visual damage, but it showed significant decreases in yield between the light vs. moderate and moderate vs. heavy categories of stink bug-damaged seeds.

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