Nitrogen Deficiencies in Corn — Easy to See Now
Emerson Nafziger, Extension Agronomy Specialist for the University of Illinois, wrote an article on nitrogen deficiencies in corn. The article is very timely as many growers are now seeing the effect of nitrogen deficiency appear in their corn fields in NW Ohio. Unfortunately there isn’t much that can be done at this stage to assist the corn crop; Emerson writes:
There is little to be done to correct N deficiency in corn following pollination, especially when we have to count on uncertain rainfall to move fertilizer N into the soil so the roots can take it up. Root systems are also starting to decline in size and activity once ears reach the roasting ear stage. It is unlikely that 10 lb or so of N applied using a foliar-safe form will do much to cure deficiency this late.
Listen to my podcast on his article here: