Pigweed is breaking through Tennessee cotton and soybean fields. Pre-applied herbicides, depending on field and weather conditions, likely allowing pigweed to bust through and now is the time to make some decisions.
Springs in the South are wet more often than not. That is why a two-pass corn weed control program in 9 out of the last 10 years has provided more consistent weed control than reliance on a single pass.
Tennessee farmers, and those in other Southern states, are behind in spraying herbicides in burndown applications to clear hard-hit winter fields before 2014 spring planting, but winter also put weed germination behind schedule.