Start Date: 2012
Principal Investigator: Daniel Kaiser
Organization: University of Minnesota, Department of Soil, Water and Climate
Placing fertilizer with the seed is typically perceived as a good management practice for the Northern Corn Belt, where soils can remain cool into the early part of the growing season. Placement of fertilizer with the corn seed does pose a potential risk for seedling damage due to salt or high nutrient contents. Traditionally, the salt index of a fertilizer has been thought to be the best way to rank fertilizer sources for seed placement. However, newer research in Minnesota has called into question whether salt index alone is the best indicator.
This greenhouse study examines the effects of different fertilizer sources containing nitrogen (N), phosphorus (P), potassium (K) or sulfur (S) on the emergence, early growth and nutrient uptake of corn grown on a silt loam, clay loam and fine sandy loam soil. The resulting data can aid producers in selecting fertilizer and rates that best increase early plant growth and educate them on the risk of seedling damage.
©2017 Agricultural Fertilizer Research and Education Council of Minnesota