U.S. farmers are cutting back on spreading fertilizer this autumn in response to a drop in crop prices to multi-year lows and a delayed harvest, dealers say, warning of a pullback that will be felt from grain markets to Canadian potash mines.
Growers wanting to increase crop yields while helping to improve Ohio’s water quality can do so using a set of best management practices when applying fertilizer to their fields this fall, according to a group of agronomists and agricultural engineers with Ohio State University’s College of Food, Agricultural, and Environmental Sciences.
As federal and state government begins to take action to monitor and prevent fertilizer runoff into watersheds — especially in the Great Lakes region — some farmers see strip-till as a preventative measure.
Imposing a 25 percent tax on phosphorus, used as a fertilizer primarily on corn, could reduce soluble phosphorus concentrations in northwest Ohio watersheds by about 8 percent, according to an analysis led by Brent Sohngen, professor in Ohio State’s Department of Agricultural, Environmental and Development Economics.
When we think of applying fertilizer the nutrients that come to mind initially are the major nutrients nitrogen (N), phosphorus (P), potassium (K), and sulfur (S). However there are 10 other mineral elements or nutrients needed by plants—most are micronutrients.