Indicators of early season performance of ESN® fertilizer

Hancock trials

Nitrogen fertilizer trials at Hancock indicate that ESN® has performed well as of 30 days after emergence (DAE). The main fertilizer treatments will be split into sub-treatments where some plots will receive additional N fertilizer applications (in 30 lb-N/ac intervals) based on rainfall events to assess how well ESN® compares to conventional fertilizer with supplemental N applied. The ESN® was applied 100% at emergence while the ammonium sulfate (AMS) and ammonium nitrate (AN) treatment were split applied (⅓ of N as AMS at emergence, ⅔ of N as AN at tuberization). At 30 DAE, the ESN® had greater average petiole nitrate concentrations across all N rates. 

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