Agrium designed ESN®, a polymer coated urea, to slow the release of nitrogen into the environment. This is allows the plant to access nitrogen when it needs it the most.

ESN® yielded the highest in all of the trials. The maximum economic rate of nitrogen (MERN) was also higher probably due to ESN®’s ability to slowly release nitrogen to the crop and continue providing yield-increasing nitrogen throughout the growing season.

Take Home Lessons:

• ESN® showed higher yield over spring urea.
• MERN rate was higher with ESN® than urea.
• Using ESN® in combination with other nitrogen sources or as split application may yield even more.

Resource:

• Harms Corn After Soybeans NUE Timing.