Wet and cool conditions during flowering are ideal for development of the fungus Sclerotinia sclerotiorum.
No variety is completely resistant to white mold, particularly under severe disease pressure, but differences in tolerance exist among varieties.
Late season rains are hard on crop root systems. Standing water can cause suffocation-like conditions where oxygen deprived soil cause death to plant roots and subsequent deterioration of above ground foliage.
Various species of stink bugs cause a range of crop damage. In soybeans, they typically do not produce damage enough to warrant treatment while soybeans are in the early reproductive stages.
Numerous cases of Frogeye leaf spot have been reported in fields of susceptible soybean varieties.
Numerous cases of Frogeye leaf spot have been reported in fields of susceptible soybean varieties. Circospora sojina is the fungus that infects leaves, stems and pods. Warm, humid and rainy conditions favor rapid development of infection.
When soybean fields are flooded, oxygen available for respiration is limited.
Recent research shows that under good conditions, daily yield losses for soybeans are 0.3, 0.4, and 0.5 percent per day of planting delay for the first, second and third 10-day periods in May. Total yield loss potential mounts to roughly 15 percent by the end of the month.
Soybean stand establishment can sometimes be an easy thing, and yet there are always instances where it may take a heroic effort. Spring of 2019 could be looking for some heroes.