MOLECULAR SIZES AND FUNCTIONAL GROUPS OF HUMIC SUBSTANCES EXTRACTED BY O.IM PYROPHOSPHATE FROM SOIL AGGREGATES OF DIFFERENT STABILITY

[1] ACTON C. J., 1963, CANADIAN JOUR SOIL SCI, V43, P201

[2] STUDIES ON SOIL ORGANIC MATTER .2. THE EXTRACTION OF ORGANIC MATTER FROM SOIL BY NEUTRAL REAGENTS [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1949, 39 (03) : 274 - 279

[3] CHAMINAE R, 1946, AM AGR, V2, P119

[4] CLAPP CE, 1962, P SOIL SCI SOC AM, V26, P466

[5] DELL'AGNOLA G., 1965, Agrochimica, V9, P224

[6] Dell'Agnola G, 1964, RIC SCI, V34, P347

[7] DELLAGNOLA G, 1969, AGROCHIMICA, V13, P327

[8] DELLAGNOLA G, 1965, B SCI FAC CHIM IND B, V23, P321

[9] DUBACH P., 1955, Zeitschrift fur Pflanzenernahrung, Dungung und Bodenkunde, V69, P97, DOI 10.1002/jpln.19550690117

[10] EMERSON W. W., 1964, AUSTRALIAN J SOIL RES, V2, P46, DOI 10.1071/SR9640046

[1] ACTON C. J., 1963, CANADIAN JOUR SOIL SCI, V43, P201

[2] STUDIES ON SOIL ORGANIC MATTER .2. THE EXTRACTION OF ORGANIC MATTER FROM SOIL BY NEUTRAL REAGENTS [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1949, 39 (03) : 274 - 279

[3] CHAMINAE R, 1946, AM AGR, V2, P119

[4] CLAPP CE, 1962, P SOIL SCI SOC AM, V26, P466

[5] DELL'AGNOLA G., 1965, Agrochimica, V9, P224

[6] Dell'Agnola G, 1964, RIC SCI, V34, P347

[7] DELLAGNOLA G, 1969, AGROCHIMICA, V13, P327

[8] DELLAGNOLA G, 1965, B SCI FAC CHIM IND B, V23, P321

[9] DUBACH P., 1955, Zeitschrift fur Pflanzenernahrung, Dungung und Bodenkunde, V69, P97, DOI 10.1002/jpln.19550690117

[10] EMERSON W. W., 1964, AUSTRALIAN J SOIL RES, V2, P46, DOI 10.1071/SR9640046