Soil organic matter, greenhouse gas emission and global warming: Following one-time high rate compost application with annual cover crop planting in a dryland winter wheat-fallow rotation
Abstract:In dryland organic winter wheat-fallow rotation systems of U.S. Central High Plains, the usual practice of 10–15 Mg/ha compost application every 3–4 years, has not yielded desired soil organic matter (SOM) improvements. One-time high rate compost application and annual cover crop planting (instead of repetitive tillage) to control weeds have been proposed for carry-over SOM improvement in these systems. In this study, 15, 30 and 45 Mg/ha compost rates and controls (‘no amendment’ and inorganic fertilizer) were… Show more
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