Corn School: Fine-tuning 2022 nutrient application

With high fertilizer prices heading into 2022, corn growers can't afford to over-apply nutrients. But they also can't risk losing money by shorting the crop of its fertility needs.
On the season-ending episode of RealAgriculture's Corn School for 2021, University of Guelph associate professor Dr. David Hooker returns to comment on this conundrum and share fertility tips and strategies.
In part one of this discussion, Hooker calculated the most economical rate of nitrogen for corn in 2022. First up on this episode is the important contribution phosphorus and potassium make to corn yield. He shares research from long term trials that highlights the yield hit growers can take when planting corn into low test P and K soils. In these plots, yields averaged 155 bu/ac. But when P and K is applied in a starter form (6-28-28, 90 to 270 lb/ac in a 2 x 2 band) yield increased to 186 bu/ac.
#Corn #Fertilizer #Agronomy #Farming
Website: www.realagriculture.com/corn-...
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