SOIL ANALYSIS AND ASSESSMENT OF FERTILITY IN TROPICAL SOILS

[1] BIRCH HF, 1957, ANNU REP EAST AFR FO, P24

[2] SOIL PHOSPHORUS FRACTIONS IN SOME REPRESENTATIVE SOILS [J]. JOURNAL OF SOIL SCIENCE, 1958, 9 (01): : 109 - 119

[3] FRIEND M. T., 1960, JOUR AGRIC SCI, V54, P341, DOI 10.1017/S0021859600021274

[4] LEMARE PH, 1960, 7 T INT C SOIL SCI, V3, P600

[5] MIDDLEBURG MA, 1952, BERGCULTURES, V21, P126

[6] MOORTHY B, 1960, 7 T INT C SOIL SCI, V3, P590

[7] NYE PH, 1960, COMMW BUR SOIL SCI T, P92

[8] NYE PH, 1957, J AGRIC SCI, V49, P145

[9] SAUNDER DH, 1954, 5 T INT C SOIL SCI, V3, P171

[10] Schofield R. K., 1955, Soils and Fertilizers, V18, P373

[1] BIRCH HF, 1957, ANNU REP EAST AFR FO, P24

[2] SOIL PHOSPHORUS FRACTIONS IN SOME REPRESENTATIVE SOILS [J]. JOURNAL OF SOIL SCIENCE, 1958, 9 (01): : 109 - 119

[3] FRIEND M. T., 1960, JOUR AGRIC SCI, V54, P341, DOI 10.1017/S0021859600021274

[4] LEMARE PH, 1960, 7 T INT C SOIL SCI, V3, P600

[5] MIDDLEBURG MA, 1952, BERGCULTURES, V21, P126

[6] MOORTHY B, 1960, 7 T INT C SOIL SCI, V3, P590

[7] NYE PH, 1960, COMMW BUR SOIL SCI T, P92

[8] NYE PH, 1957, J AGRIC SCI, V49, P145

[9] SAUNDER DH, 1954, 5 T INT C SOIL SCI, V3, P171

[10] Schofield R. K., 1955, Soils and Fertilizers, V18, P373