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Tillage Effects on Spatiotemporal Variability of Particulate Organic Matter
Applied and Environmental Soil Science
This study was performed to evaluate effects of no-till (NT) and standard tillage (ST) on POM in two 15-ha neighboring fields from 2003 to 2004. We also evaluated the effects of minimum tillage (MT) on POM after both NT and ST fields were converted to MT in the summer of 2005. We quantified C and N stocks of three size fractions (53–250, 250–1000, and 1000–2000 μm) of POM (0–0.15 m depth). The POM-C 53–250 μmand 250–1000 μmfractions decreased by 25% and 36% after six months under ST, whereasdoi:10.1155/2009/219379 fatcat:t7fe22okszhzhnelswxyl3th7q