Anhydrous ammonia degrades soil. When applied to soil it accelerates population grow of generalist species of microorganisms that consume organic matter, when they die nitrogen is released to the plants. This was the way it was explained to me by my Horticulture instructor when I was attending our local tech collage. USDA ARS researchers are finding that the microorganisms that utilize anhydrous ammonia are fast acting ...more »
It is a common economic idea that when a product costs more, we tend to use less of it. When gasoline was $4.00/gallon a few years back, people were driving less and buying more fuel efficient cars. In Iowa, before they had their 5 cent bottle bill, bottle and cans ended up on roadways. Now that cans and bottle are worth 5 cents, no one throws them in the road ditches. We should apply the same approach to reducing ...more »
The Minnesota Ag Water Quality Certfication Program uses the UofM Best Management Practices as the standard but does not specifically require tile discharges to meet nitrogen standards. If nitrogen were more explicitly addressed, there would be added incentive to move toward perennial crops that use less nitrogen inputs.