IMPORTANCE OF SULFUR AS A PLANT NUTRIENT IN WORLD CROP PRODUCTION

[31] JORDAN HV, 1964, TVA1297 US DEP AGR A

[32] JORDAN HV, 1957, US DEP AGR YEARBOOK, P107

[33] JORDAN HV, 1959, 1196 US DEP AGR TECH

[34] KAMPRATH E. J., 1957, AGRON JOUR, V49, P289

[35] LABB WR, 1953, NEW ZEALAND J AGR, V86, P559

[36] LUTZ JA, 1957, 482 VIRG AGR EXPT ST

[37] MARTIN JB, 1957, 585 AL AGR EXPT STA

[38] Martin WE, 1958, CALIF AGR, V12, P10

[39] THE OCCURRENCE OF SULPHUR DEFICIENCY ON A SOIL OF ADEQUATE PHOSPHORUS STATUS [J]. AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1952, 3 (02): : 125 - &

[40] ODELIEN M., 1963, Tidsskrift for det Norske Landbruk, V70, P35

[31] JORDAN HV, 1964, TVA1297 US DEP AGR A

[32] JORDAN HV, 1957, US DEP AGR YEARBOOK, P107

[33] JORDAN HV, 1959, 1196 US DEP AGR TECH

[34] KAMPRATH E. J., 1957, AGRON JOUR, V49, P289

[35] LABB WR, 1953, NEW ZEALAND J AGR, V86, P559

[36] LUTZ JA, 1957, 482 VIRG AGR EXPT ST

[37] MARTIN JB, 1957, 585 AL AGR EXPT STA

[38] Martin WE, 1958, CALIF AGR, V12, P10

[39] THE OCCURRENCE OF SULPHUR DEFICIENCY ON A SOIL OF ADEQUATE PHOSPHORUS STATUS [J]. AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1952, 3 (02): : 125 - &

[40] ODELIEN M., 1963, Tidsskrift for det Norske Landbruk, V70, P35