Flood duration effects on soybean growth and yield

(...)Flood duration effects on the soybean plant were manifested in yellowing and abscission of leaves at the lower nodes,stunting, and reduced dry weight and seed yield. Canopy height and dry weight decreased linearly with duration of the flood at both growth stages. The growth rates were 25 to 35% less when soybean was flooded at R2 than at V4. The additional 4 wk of vegetative growth after flooding allowed the soybean flooded at V4 to recover to a greater extent than the cultivars flooded at R2 (...)