Dramatic Changes in Agriculture Needed as World Warms and Grows (ScienceDaily)
Yields from some of the most important crops begin to decline sharply when average temperatures exceed about 30 degrees Celsius, or 86 Fahrenheit. Projections are that by the end of this century much of the tropics and subtropics will regularly see growing season temperatures above that level, hotter than the hottest summers now on record.
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Reducing Nitrogen
Usage
Arcadia Biosciences has conducted field trials in five growing seasons. In each field trial, Nitrogen Use Efficiency (NUE) canola demonstrated that it can achieve high yields using significantly less nitrogen fertilizer than conventional varieties. In the chart above, note that NUE canola yielded 2800 lb/ac using two-thirds less nitrogen fertilizer than the conventional variety needed to generate the same yield.