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United States Department of Agriculture

Agricultural Research Service

Title: Impacts of Management Practices on Soil Organic Carbon Content

Authors
item Owens, Lloyd
item Starr, Gordon
item Shipitalo, Martin

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: September 6, 2001
Publication Date: October 15, 2001
Citation: Owens, L.B., Starr, G.C., Shipitalo, M.J. Impacts of Management Practices on Soil Organic Carbon Content. S11-Owens125133-P. CD-ROM. 2001 ASA Annual Meeting Abstracts.

Technical Abstract: Soil organic carbon (SOC) is one of the factors contributing to soil quality/soil health. Management practices that maintain or even sequester SOC promote sustainable agriculture. On silt loam soils in northeastern Ohio, SOC levels were compared with different kinds of management: 35 y of consecutive, no-till corn (Zea mays L.) with manure in addition to commercial fertilizer; 29 y of consecutive, no-till corn; 14 y of consecutive corn with conventional tillage (moldboard plow and disking); 1 y of corn with conventional tillage; and 20 y of meadow. In the top 2.5 cm soil layer, the SOC for the multi-year plowed, one-year plowed, meadow, no-till without manure, and no-till with manure was 10, 14, 31, 35, and 57 g/kg, respectively. Below 15 cm soil depth, the SOC concentrations under all 5 management practices were similar and continued to decrease with profile depth. The same relationship of management practice to SOC could be seen in the accumulative total SOC in the 0-2.5 cm depth (and 0-24 cm depth): 3.2 (42.1), 3.5 (51.5), 7.9 (48.5), 8.8 (50.7), and 11.6 Mg/ha (78.9 Mg/ha) for multi-year plowed, one-year plowed, meadow, no-till without manure, and no-till with manure, respectively. The SOC data from these management practices showed that practices that drastically disturb the soil, even one year, lead to less SOC in the soil profile.

Last Modified: 12/20/2014
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