Underground trenches filled with woodchips, called bioreactors, are gaining traction as viable edge-of-field tools to remove nitrogen (N) from the water that drains from agricultural fields. A new study from Iowa State University looked at how woodchip degradation affected the performance and lifespan of these bioreactors.
High precipitation and minimal crop demand for water in the spring makes for perfect conditions for water to move quickly through the soil profile, taking nitrogen with it. Although we cannot control the weather, there are a few management practices, including application timing, that can help prevent excess nitrogen losses in the spring, says the University of Minnesota.
Farmers can't predict their annual corn harvest with certainty, but with the help of new research from Michigan State University, they can now pinpoint specific parts of their fields that consistently produce either good or bad yields, allowing for smarter fertilizer application.
It's difficult to estimate how much nitrate-N is lost from the root zone, but soil sampling and measuring the concentration of nitrate- and ammonium-N remaining is an alternative to guessing.
South Dakota State University discusses the chances for nitrogen loss due to deficient or abundant precipitation, and one product that may help slow volatilization of urea.
University of Minnesota Extension explains the nitrogen cycle, how nitrogen can transform and end up leaving the soil through the atmosphere or local waterways.
The University of Minnesota Extension provides guidelines developed through years of unbiased research to help growers make the best decisions for their nitrogen management.
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On this episode of Conservation Ag Update, brought to you by Martin-Till, Brian and Darren Hefty, fourth-generation farmers and hosts of Ag PhD, share tips for treating tar spot in corn.
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