Northeast Research and Demonstration Farm
Several essential plant nutrients are required in very small amounts and are referred to as micronutrients. Prior research in Iowa and neighboring states showed inconsistent corn and soybean grain yield responses to fertilization with micronutrients, except for zinc in corn. This report summarizes results of two studies with corn and soybean, one with application to the soil and the other with application to foliage, conducted at this farm from 2012 through 2014. The micronutrients evaluated were boron (B), copper (Cu), manganese (Mn), and zinc (Zn).
Iowa State University
Mallarino, Antonio; Haq, Mazhar; Enderson, Joshua; Oltmans, Ryan; and Pecinovsky, Kenneth, "Corn and Soybean Yield Response to Micronutrients in Northeast Iowa" (2015). Iowa State Research Farm Progress Reports. 2206.