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Towards applying N balance as a sustainability indicator for the US cornbelt: realistic achievable targets, spatio-temporal variability and policy implications

Shai Sela, Peter B Woodbury, Rebecca Marjerison, Harold van Es
2019 Environmental Research Letters  

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Gains in nitrogen use efficiency Appenin corn (Zea mays L.) production remain low due to management constraints and difficulties in accurately predicting the optimum fertilizer application rate. Retailers and consumers are looking for robust sustainability indicators to help drive the industry towards more sustainable food production, including the simple input-output based 'N balance' metric. Seven-year simulations for 25 locations across five US Corn-Belt States (NE, IA, MN, IL, IN) were
more » ... cted using the biogeochemical Adapt-N model to determine (i) realistically achievable N balance values when N rates are optimized, (ii) the effects of climate and soil type on achievable N balance values, and (iii) the relative importance of N application
doi:10.1088/1748-9326/ab1219 fatcat:vjd7n5h23je6xmsgr6n2huxdhy
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Shai Sela, Peter B Woodbury, Rebecca Marjerison, Harold van Es. "Towards applying N balance as a sustainability indicator for the US cornbelt: realistic achievable targets, spatio-temporal variability and policy implications." Environmental Research Letters 14.6 (2019)