iowa state university acceptance rate Managing the N Factor

Iowa State University Extension and Outreach wants Iowans to be informed about water quality and the management of nitrates. That’s why "Managing the N Factor," a web-based tool that highlights practices to improve the quality of water throughout the state, was launched recently.

Contrary to popular belief, nitrogen fertilizer is not the primary reason for nitrate loss. Most loss happens during the spring because the soil is wet and warm, often above its ability to retain water, and there are no crops present to take up the nitrogen. Because of a mismatch in timing between nitrate production from soil organic matter and nitrate demand from rapidly growing crops, some nitrate is lost.

Cover crops are being used more frequently to bridge that gap and take up excess nitrogen. Extended crop and pasture rotations, as well as the use of energy crops are also being used to maximize nitrate reduction. On the edge of fields, farmers are building wetlands, installing saturated buffers and constructing bioreactors to improve the quality of the water leaving their farms.

To learn more about managing nitrates and to explore the new online tool go to: http://www.extension.iastate.edu/wate...

iowa state university acceptance rate Managing the N Factor
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