418-016 (SPES-64P)

Authors as Published

R.O. Maguire, W.E. Thomason, G.K. Evanylo, and M.M. Alley, Professors, School of Plant and Environmental Sciences, Virginia Tech

This pubilcation is available in a PDF file format only.

Nitrogen recommendations for corn grown in the middle Atlantic and southeastern states have not been based on traditional soil test calibration methods, in contrast to other nutrients, because: 1) predicting the availability to crops of organic N has not been successful due to variability in weather and other factors, and 2) the storage of soil mineral N is often too brief due to the winter and spring leaching losses of the mobile NO3-N form that occur under our high rainfall and moderate soil temperatures. Nitrogen analysis of animal manures, biosolids, and legumes to predict the amounts of N available for crops has been only partly successful, which accentuates the need for a soil N test.

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Publication Date

February 7, 2019