DETERMINATION OF PHOSPHATE IN SOIL EXTRACTS BY AUTOMATIC COLORIMETRIC ANALYSIS

[1] DETERMINATION OF TOTAL, ORGANIC, AND AVAILABLE FORMS OF PHOSPHORUS IN SOILS [J]. SOIL SCIENCE, 1945, 59 (01) : 39 - 45

[2] BREWER PG, 1965, 1965 TECHN S, P308

[3] CHANG S. C., 1957, SOIL SCI, V84, P133, DOI 10.1097/00010694-195708000-00005

[4] COLWELL JD, 1965, CHEM IND-LONDON, P893

[5] THE COLORIMETRIC DETERMINATION OF PHOSPHORUS [J]. ANALYST, 1958, 83 (988) : 406 - 414

[6] AUTOMATIC PROCEDURES FOR DETERMINATION OF CALCIUM POTASSIUM MAGNESIUM AND PHOSPHORUS IN SOIL EXTRACTS [J]. ANALYST, 1965, 90 (1067) : 65 - &

[7] Murphy J., 1986, ANN CHEM ACTA, DOI 10.1016/S0003-2670(00)88444-5

[8] AUTOMATED DETERMINATIONS OF PHOSPHATE CONTENT OF SOILS UNDER RUBBER CULTIVATION [J]. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1970, 21 (06) : 275 - +

[9] OLSEN SR, 1954, 939 US DEP AGR DEP C

[10] A MODIFIED CHANG AND JACKSON PROCEDURE FOR ROUTINE FRACTIONATION OF INORGANIC SOIL PHOSPHATES [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1966, 30 (05): : 563 - &

[1] DETERMINATION OF TOTAL, ORGANIC, AND AVAILABLE FORMS OF PHOSPHORUS IN SOILS [J]. SOIL SCIENCE, 1945, 59 (01) : 39 - 45

[2] BREWER PG, 1965, 1965 TECHN S, P308

[3] CHANG S. C., 1957, SOIL SCI, V84, P133, DOI 10.1097/00010694-195708000-00005

[4] COLWELL JD, 1965, CHEM IND-LONDON, P893

[5] THE COLORIMETRIC DETERMINATION OF PHOSPHORUS [J]. ANALYST, 1958, 83 (988) : 406 - 414

[6] AUTOMATIC PROCEDURES FOR DETERMINATION OF CALCIUM POTASSIUM MAGNESIUM AND PHOSPHORUS IN SOIL EXTRACTS [J]. ANALYST, 1965, 90 (1067) : 65 - &

[7] Murphy J., 1986, ANN CHEM ACTA, DOI 10.1016/S0003-2670(00)88444-5

[8] AUTOMATED DETERMINATIONS OF PHOSPHATE CONTENT OF SOILS UNDER RUBBER CULTIVATION [J]. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1970, 21 (06) : 275 - +

[9] OLSEN SR, 1954, 939 US DEP AGR DEP C

[10] A MODIFIED CHANG AND JACKSON PROCEDURE FOR ROUTINE FRACTIONATION OF INORGANIC SOIL PHOSPHATES [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1966, 30 (05): : 563 - &