HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Wilhelm, W. W. Articles by Lightle, D. T. Search for Related Content PubMed Articles by Wilhelm, W. W. Articles by Lightle, D. T. Agricola Articles by Wilhelm, W. W. Articles by Lightle, D. T. Related Collections Sustainable Agriculture Soil Erosion Soil Organic Matter Carbon Sequestration Residue management Biofuels Soil Conservation Maize Management

Corn Stover to Sustain Soil Organic Carbon Further Constrains Biomass Supply

^a USDA-ARS, Agroecosystem Management Res. Unit, 117 Keim Hall, Lincoln NE 68583-0934
^b USDA-ARS, North Central Soil Conserv. Res. Lab, 803 Iowa Ave., Morris, MN 56267
^c USDA-ARS, National Soil Tilth Lab., 2150 Pammel Dr., Ames, IA, 50011-3120
^d National Soil Survey Center, 100 Centennial Mall N. Rm 152, Lincoln, NE 68508-3866

View larger version (18K): [in this window] [in a new window]   Fig. 1. (A) Estimated amount of corn stover needed to maintain soil organic carbon (SOC) content [solid black bars, (Johnson et al., 2006a)]; Revised Universal Soil Loss Equation, version 2 (RUSLE2) (USDA-ARS, 2003a) estimated amount of corn stover needed to limit water erosion within the accepted tolerance, T (bars with diagonal lines); and Wind Erosion Prediction System (WEPS) (USDA-ARS, 2003b) estimated amount of corn stover needed to limit wind erosion within the accepted tolerance, T (white bars), with various production practices. (B) Estimated amount of sustainably harvestable corn stover with various production practices and grain yield levels limited by the need to maintain SOC. For example, stover in the shaded area would be sustainably harvestable under moldboard plow tillage in a corn–soybean (C-S) rotation (short and long dashed line). Long dashed line: Harvestable stover under no-till or conservation tillage with a corn–soybean rotation. Solid line: Harvestable stover under moldboard plow with a continuous corn (C-C). Short dashed line: Harvestable stover under no-till or conservation tillage with continuous corn.