LIMING AND LIME-PHOSPHORUS-ZINC INTERACTIONS IN 2 NIGERIAN ULTISOLS .2. EFFECTS ON MAIZE ROOT AND SHOOT GROWTH

[21] OLSEN S R, 1972, P243

[22] PEARSON RW, 1975, 30 CORN U COLL AGR C

[23] LIME REQUIREMENTS OF NATAL OXISOLS BASED ON EXCHANGEABLE ALUMINUM [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1970, 34 (04): : 595 - +

[24] SHOOP G. J., 1961, AGRON7 JOUR, V53, P111

[25] Soares W. V., 1975, Soil Management in Tropical America. Proceedings, Seminar, CIAT, Cali, Colombia, February 1974 (Bornemisza, E.

[26] Alvarado, A., Editors)., P283

[27] SPAIN JM, 1975, SOIL MANAGEMENT TROP, P313

[28] WOODRUFF J. R., 1965, SOIL SCI SOC AMER PROC, V29, P148

[29] YOUNGE JR, 1963, HAWAII FARM SCI, V12, P4

[30] 1965, METHODS ANAL AOAC

[21] OLSEN S R, 1972, P243

[22] PEARSON RW, 1975, 30 CORN U COLL AGR C

[23] LIME REQUIREMENTS OF NATAL OXISOLS BASED ON EXCHANGEABLE ALUMINUM [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1970, 34 (04): : 595 - +

[24] SHOOP G. J., 1961, AGRON7 JOUR, V53, P111

[25] Soares W. V., 1975, Soil Management in Tropical America. Proceedings, Seminar, CIAT, Cali, Colombia, February 1974 (Bornemisza, E.

[26] Alvarado, A., Editors)., P283

[27] SPAIN JM, 1975, SOIL MANAGEMENT TROP, P313

[28] WOODRUFF J. R., 1965, SOIL SCI SOC AMER PROC, V29, P148

[29] YOUNGE JR, 1963, HAWAII FARM SCI, V12, P4

[30] 1965, METHODS ANAL AOAC