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Chemical Stabilization Of Soil Organic Nitrogen By Phenolic Lignin Residues In Anaerobic Agroecosystems, D.C. Olk, Kenneth G. Cassman, K. Schmidt-Rohr, M.M. Anders, J.-D. Mao, J.L. Deenik

Department of Agronomy and Horticulture: Faculty Publications

This review summarizes independent reports of yield decreases in several agricultural systems that are associated with repeated cropping under wet or submerged soil conditions. Crop and soil data from most of these agroecosystems have led researchers to attribute yield decreases to a reduction in crop uptake of N mineralized from soil organic matter (SOM). These trends are most evident in several long-term field experiments on continuous lowland rice systems in the Philippines, but similar trends are evident in a continuous rice rotation in Arkansas, USA and with no-till cropping systems in North American regions with cool, wet climatic conditions in …