By Matt Hutcheson, CCA, Product Manager, Seed Consultants, Inc.
Due to heavy rainfall and saturated soils during the 2018 growing season, it is not surprising to see some signs of nitrogen deficiency showing up in corn fields. Whether applied preplant or sidedressed, patterns of heavy rainfall and wet soils increase the likelihood of nitrogen being lost. Because nitrogen is an essential nutrient for corn plant development and ultimately yield, losses will impact final yields this fall.
When saturated conditions persist, nitrogen can be lost though leaching or denitrification. Leaching (more likely to occur in course-textured soils) is the process where nitrogen is moved down through the soil profile and out of the root zone where it is not available to plants. The severity of nitrogen loss due to leaching is impacted the intensity and duration of rainfall. Denitrification is the process where soil nitrogen is biologically converted to gaseous nitrogen and lost to the atmosphere.… Continue reading