Corn is nearing the finish line—in many areas corn is tasseling or further in the reproductive stages. At this point there is still opportunity to make—or break—yields depending on your management. When at tassel, corn still has 40% of total nitrogen left to uptake.
When scouting in late stages, Brad Beutke, Farm Journal Corn College presenter, suggests that you don’t rely on tissue tests alone when it comes to nutrients.
“Doesn’t tell us enough about what’s happening in the soil and if there’s enough gas to finish,” he says. “Just because the plant’s not showing symptoms of stress doesn’t mean we have enough [nitrogen] available to finish the rest of the season.”
If you have a possible nitrogen deficiency, Beutke suggests considering more than just rates. Look at the roots especially to make sure they are taking up nitrogen. Things like compaction, tillage and damaged roots can hurt corn’s nitrogen uptake.
Watch the video below to learn the tricks of checking for late season yield robbers and if there are solutions this year or how you can adjust for next year.