AMES, Iowa – When Michael Castellano tells people there are billions of different variations of farmer decisions and environmental conditions that can affect how much nitrogen fertilizer is just ...

Corn farmers always seem to be searching for that perfect nitrogen (N) application rate, probably because it can be a moving target. Apply too little, and you miss out on yield potential. Apply too ...

Reducing nitrogen fertilization rates to the environmental optimum would cause a drop in yield of about 6% while only slightly reducing nitrogen loss, an unfavorable trade-off, Archontoulis said. "If ...

With high costs of fertilizer this coming year, it might be a good time to reevaluate your fertilizer application rates. Nitrogen is a significant part of the variable costs for corn production. In ...

A team of scientists from the University of Oxford, Nanjing Agricultural University, and the Institute of Genetics and Developmental Biology has identified a single rice gene that, in experiments and ...

AMES, Iowa – The amount of nitrogen fertilizer needed to maximize the profitability of corn production in the Midwest has been increasing by about 1.2% per year for the past three decades, according ...