Biology and Control of Black Nightshade (Solanum nigrum) in Cotton (Gossypium hirsutum)

OBJECTIVES: To determine why control of nightshade with prometryn declined with
time in a field study conducted in 1985, 1987, 1988, and 1989.

PROCEDURES: Both seed and soil samples were collected from field plots
previously untreated and treated with prometryn.

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