||Effects of Trends in Tillage Practices on Erosion and Carbon Content of Soils in the U.S. Corn Belt.
Lee, J. J. ;
Phillips, D. L. ;
Liu, R. ;
||Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis. Dept. of Civil Engineering.
Soil conservation ;
Soil erosion ;
Soil management ;
Air pollution abatement ;
Natural emissions ;
Carbon dioxide ;
Corn plants ;
Farm crops ;
Erosion Productivity Impact Calculator Model
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Soil is an important reservoir for carbon (C), representing perhaps twice the amount of C in the atmosphere and close to three times the amount in vegetation. When soils are converted to agricultural production using conventional tillage practices which stir and mix the soil, they typically lose a significant portion of organic C, especially in the first few decades of cultivation. Thus, conventionally cultivated soils have acted as net sources for atmospheric CO2. The Erosion Productivity Impact Calculator (EPIC) model was used to simulate soil erosion and soil C content at 100 randomly selected sites in the US corn belt. Four management scenarios were run for 100 years: (1) current mix of tillage practices maintained; (2) current trend of conversion to mulch-till and no-till maintained; (3) trend to increased no-till, (4) trend to increased no-till with addition of winter wheat cover crop. As expected, the three alternative scenarios resulted in substantial decreases in soil erosion compared to the current mix of tillage practices.
||Pub. in Water, Air, and Soil Pollution, v70 p389-401 1993. Prepared in cooperation with Oregon State Univ., Corvallis. Dept. of Civil Engineering.
|NTIS Title Notes
||Reprint: Effects of Trends in Tillage Practices on Erosion and Carbon Content of Soils in the U.S. Corn Belt.
||48B; 48E; 98C; 68A
||PC A03/MF A01