References

Barber, S.A., 1984. Phosphorus Soil Nutrient Bioavailability: A Mechanistic Approach. John Wiley and Sons, New York, pp: 201- 203.

Drury, C.F., C. Tan, T.W. Welacky, T.O. Oloya, A.S. Hamill and S.E. Weaver, 1999. Red clover and tillage influence on soil temperature, water content, and corn emergence. Agron. J., 91: 101-108.
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Griffith, D.R. and N.C. Wollenhaupt, 1994. Crop Residue Management Strategies for the Midwest. In: Crop Residue Management, Hatfield, J.L. and B.A. Stewart (Eds.). Lewis Publishers, Boca Raton, FL. USA., pp: 15-37.

Raimbault, B.A., T.J. Vyn and M. Tollenaar, 1990. Corn response to rye cover crop management and spring tillage systems. Agron. J., 82: 1088-1093.

Reeves, D.W., 1994. Cover Crops and Rotation. In: Crops Residue Management, Hatfield, J.L. and B.A. Stewart (Eds.). Lewis Publishers, Boca Raton, FL. USA., pp: 125-172.

SAS Institute, 1999. The Analyst Applications. SAS Inst., Cary, NC USA.

Schepers, J.S., D.D. Francis and M.T. Tompson, 1989. Simultaneous determination of total C, total N and 15N on soil and plant material. Commun. Soil Sci. Plant Anal., 20: 949-959.
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Swan, J.B., T.C. Kaspar and D.C. Erbach, 1996. Seed-row residue management for corn establishment in the northern US corn belt. Soil Till. Res., 40: 55-72.
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