Estimation of shoot and root biomass with their C, N, P, K and S contents of eight different rice varieties at vegetative stage
Black CA. 1965. Methods of Soil Analysis. Part I and II American Society of Agronomy. Inc. Publication Madison, Wisconsin, United State of America.
Gomez KA, Gomez AK. 1984. Statistical Procedures for Agricultural Research. Second edition. John Wiley and Sons. New York. 207-215 p.
Mendez M, Dignac MF, Rumpel C, Rasse DP, Derenne S. 2010. 13C isotopic signatures of cutin and suberin biomarkers to assess root and shoot C contribution to soil organic matter UMR Bioemco, CNRS, UPMC, INRA, 11 rue Pierre et Marie Curie, F-75005 Paris, France M. 28, 73.
Oslen SR, Cole CV, Watanable FS, Dean LA. 1954. Estimation of available phosphorus in soils by extraction with sodium bicarbonate. United State Department of Agriculture. Cire. 929.
Page AL, Miller, Keeney. 1989. Methods of Soil Analysis, Part-II (Second Edition.). American Society of Agronomy., Inc. Publication, Madison, Wisconsin. United State of America. p. 501-534.
Walkey A, Black IA. 1934. An experiment of degtiareff method for determining soils organic matter and proposed modification for the chronic acid titration method. Soil Science 37, 29-38.