Tillage, cropping systems, and nitrogen fertilizer source effects on soil carbon sequestration and fractions

Upendra M Sainju1, Zachary N Senwo, Ermson Z Nyakatawa

  • 1Northern Plains Agricultural Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, 1500 N. Central Avenue, Sidney, MT 59270, USA. upendra.sainju@ars.usda.gov

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