Weed Management in Soybean, Part 2

Soybeans were planted at 188,000 seeds/acre in 30-in. rows on May 18. Preemergence (PRE) treatments were applied on May 19. Early postemergence (EPOST), midpostemergence (MPOST), and late postemergence (LPOST) treatments were applied on June 16, 24, and July 9, respectively. Soybean growth stage was V2, V3, and R1 on June 16, 24, and July 9, respectively. Weeds were 0.25–10 in. tall, 0.25–18 in. tall and 0.25–6 in. tall, on June 16, 24, and July 9, respectively. Weed species in the study included: giant foxtail, velvetleaf, common waterhemp, common lambsquarters, and Pennsylvania smartweed averaging a population of <1–10 plants/ft.