Black nightshade : a soybean pest
Abstract
"One of the several nightshade species found in this country, Eastern black nightshade (Solanum ptycanthum), also called deadly nightshade, competes with crops, is toxic to livestock, contributes to harvesting and storage problems, and reduces the quality of soybeans. Although poisonous weeds should be managed with caution, toxicity is not the major problem with nightshade. Because black nightshade is fairly inconspicuous in a soybean field, you may be unaware of its presence during the growing season. But you'll know it's there during harvest when a stick, balled-up mass of material accumulates in the combine. So mechanical obstruction during harvest operations is the real problem when the weed has infested your crops."--First page.
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