ESN AS A NITROGEN SOURCE FOR OHIO SOFT RED WINTER WHEAT PRODUCTION
Applied Research
Edwin Lentz
Extension Educator and Professor
The Ohio State University Extension
Findlay
Abstract
\r\n ESN is a relatively new controlled release N product for Ohio wheat production. It is a polymer coated urea that the nitrogen release is dependent upon temperature and moisture. The objective of this study was to evaluate ESN as a nitrogen source for wheat production in northwest Ohio. In Fall 2009, medium-maturity variety ‘Hopewell’ was established into soybean stubble on the OARDC Northwest Research Station near Custar, Ohio. Treatments included Urea, ESN, 75:25 urea:ESN blend, 50:50 urea:ESN blend, and a 25:75 urea:ESN blend. A nitrogen rate of 80 pounds per acre was applied at greenup for each treatment. Experimental design was a completely randomized block replicated four times. Analysis was a simple ANOVA. Grain yield, test weight, spike number, and N uptake were measured for each treatment. Significant differences were observed among treatments for yield. ESN yields were significantly less than urea and the 75:25 and 50:50 urea:ESN blends. The 75:25 urea:ESN and 50:50 urea:ESN blends were similar to urea. Yields of the 25:75 urea:ESN blend was similar to ESN. ESN alone would not be an adequate N source for wheat production in northwest Ohio. It may be a viable product when blended with urea as long as the blend contains more than 50% urea.
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Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.
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Authors: Edwin M. Lentz
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Lentz, E. Extension Educator, The Ohio State University Extension, Ohio, 45840