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

This Article Figures Only 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 Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (29) Citing Articles via Google Scholar Google Scholar Articles by Mikhailova, E.A. Articles by Post, C.J. Search for Related Content PubMed Articles by Mikhailova, E.A. Articles by Post, C.J. GeoRef GeoRef Citation Agricola Articles by Mikhailova, E.A. Articles by Post, C.J.

DIVISION S-6-SOIL & WATER MANAGEMENT & CONSERVATION

Cultivation Effects on Soil Carbon and Nitrogen Contents at Depth in the Russian Chernozem

^a Cornell Univ., Dep. of Soil, Crop, and Atmospheric Sci., Bradfield Hall, Ithaca, NY 14853 USA
^b Russian Inst. of Agronomy and Soil Erosion Control, K. Marx St., 70B, Kursk, Russia 305021
^c Cornell Univ., Dep. of Biometrics, 434 Warren Hall, Ithaca, NY 14853 USA

em10{at}cornell.edu

Little is known about changes in soil organic C (SOC) and total N with depth and with land use. We conducted this study to determine the depth of changes in SOC and total N under different management regimes in the chernozem soil. Four sites were sampled: a native grassland field (not cultivated for at least 300 yr), an adjacent 50-yr continuous-fallow field, a yearly cut hay field in the V.V. Alekhin Central-Chernozem Biosphere State Reserve in the Kursk region of Russia, and a continuously cropped field in the Experimental Station of the Kursk Institute of Agronomy and Soil Erosion Control. All sampled soils were classified as fine-silty, mixed, frigid Pachic Hapludolls. Soil organic C, total N contents, and bulk densities with depth were compared. Significant reductions in SOC and total N concentrations were detected to a depth of 120 to 130 cm in the 50-yr continuous-fallow field and to a depth of 80 cm in the continuously cropped field. Highest reductions were observed in the top 10 cm of soil, where reduction in SOC ranged from 38 to 43% and reduction in total N ranged from 45 to 53%. Significant losses of SOC and total N per equivalent soil mass on an area basis were observed to a depth of 60 cm in the continuously cropped field and to a depth of 100 cm in the 50-yr continuous-fallow field.

Abbreviations: CNAL, Cornell Nutrient Analysis Laboratory • SOC, soil organic carbon

This article has been cited by other articles:

				E. A. Mikhailova and C. J. Post Effects of land use on soil inorganic carbon stocks in the Russian chernozem. J. Environ. Qual., July 1, 2006; 35(4): 1384 - 1388. [Abstract] [Full Text] [PDF]

				R. A. Omonode, A. Gal, D. E. Stott, T. S. Abney, and T. J. Vyn Short-term Versus Continuous Chisel and No-till Effects on Soil Carbon and Nitrogen Soil Sci. Soc. Am. J., February 2, 2006; 70(2): 419 - 425. [Abstract] [Full Text] [PDF]

				J. Leifeld Soils as sources and sinks of greenhouse gases Geological Society, London, Special Publications, January 1, 2006; 266(1): 23 - 44. [Abstract] [PDF]