Fixing the soybean nitrogen credit: Is cropping systems diversity always good?

MICHAEL CASTELLANO - Frankenberger Professor of Soil Science, Agronomy, Iowa State University Author
10/24/2017 Added
46 Plays


Two cropping systems dominate the Midwest: continuous corn and corn–soybean rotation. Corn-soybean rotation produces 15 percent more corn despite 25 percent less nitrogen fertilizer. Mike Castellano will discuss the ecosystem processes contributing to this so-called "soybean nitrogen credit" while considering underappreciated environmental impacts of the two systems.

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