Agrium's ESN v. Urea
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.