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Published in Agron J 99:1158-1168 (2007)
DOI: 10.2134/agronj2006.0317
© 2007 American Society of Agronomy
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Occasional Tillage of No-Till Systems

Carbon Dioxide Flux and Changes in Total and Labile Soil Organic Carbon

J. A. Quinckea, C. S. Wortmannb,*, M. Mamob, T. Frantic and R. A. Drijberb

a INIA La Estanzuela, CC 39173 Colonia, Uruguay
b 279 Plant Science, Univ. of Nebraska, Lincoln, NE 68583-0915
c Dep. of Biosystems Engineering, Univ. of Nebraska, Lincoln, NE 68583-0726


Figure 1
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Fig. 1. Stocks of soil organic carbon (SOC) on an equivalent soil mass of 60 kg m–2, representing approximately the 0- to 5-cm depth, at 24 to 32 mo after one-time tillage of no-till land at Rogers Memorial Farm [RMF; LSD(0.05) = 194] and Agricultural Research and Development Center [ARDC; LSD(0.05) = 330] in eastern Nebraska.

 

Figure 2
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Fig. 2. Stocks of soil organic carbon (SOC) on an equivalent soil mass of 400 kg m–2, representing approximately the 0- to 30-cm soil depth, at 24 to 32 mo after one-time tillage of no-till land at Rogers Memorial Farm [RMF; LSD(0.05) = 413] and Agricultural Research and Development Center [ARDC; LSD(0.05) = 967] in eastern Nebraska. The tillage effects were not significant.

 





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The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education
Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality
The Plant Genome
Copyright © 2007 by the American Society of Agronomy.