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Main Title Effects of Trends in Tillage Practices on Erosion and Carbon Content of Soils in the U.S. Corn Belt.
Author Lee, J. J.; Phillips, D. L.; Liu, R.;
CORP Author Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis. Dept. of Civil Engineering.
Publisher c1993
Year Published 1993
Report Number EPA/600/J-93/494;
Stock Number PB94-130051
Subjects Soil conservation; Tillage; Soil erosion; Carbon; Soil management; Trends; Alternatives; Air pollution abatement; Natural emissions; Carbon dioxide; Corn plants; Farm crops; Scenarios; Reprints; Erosion Productivity Impact Calculator Model
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB94-130051 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 05/14/1994
Collation 15p
Abstract 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.
Supplementary Notes 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 Journal article.
Title Annotations Reprint: Effects of Trends in Tillage Practices on Erosion and Carbon Content of Soils in the U.S. Corn Belt.
Category Codes 48B; 48E; 98C; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/02
Document Type NT
Control Number 404816963
Cataloging Source NTIS/MT
Origin NTIS
Type CAT