EFFECT OF SOIL POTASSIUM, POTASSIUM FERTILIZER AND METHOD OF FERTILIZER PLACEMENT UPON CORN YIELDS

[1] BARBER STANLEY A., 1959, AGRON JOUR, V51, P97

[2] BAUM EL, 1956, METHODOLOGICAL PR ED, P76

[3] BLACK CA, 1955, IOWA STATE COLL J SC, V30, P572

[4] BOSWELL FRED C, 1957, SOIL SCI SOC AMER PROC, V21, P301

[5] Soil-plant relations I The quantitative relation of exchangeable potassium to crop yields and to crop response to potash additions [J]. SOIL SCIENCE, 1944, 58 (01) : 305 - 324

[6] DEWIT CT, 1953, 594 VERSL LANDB OND

[7] DRAPER NR, 1966, APPLIED REGRESSION A

[8] HANWAY J., 1955, Soil Science Society of America. Proceedings, V19, P77

[9] HANWAY JJ, 1962, 503 IOW AGR EXP STA, P407

[10] The quantitative mineral nutrient requirements of plants [J]. PLANT PHYSIOLOGY, 1936, 11 (04) : 749 - 764

[1] BARBER STANLEY A., 1959, AGRON JOUR, V51, P97

[2] BAUM EL, 1956, METHODOLOGICAL PR ED, P76

[3] BLACK CA, 1955, IOWA STATE COLL J SC, V30, P572

[4] BOSWELL FRED C, 1957, SOIL SCI SOC AMER PROC, V21, P301

[5] Soil-plant relations I The quantitative relation of exchangeable potassium to crop yields and to crop response to potash additions [J]. SOIL SCIENCE, 1944, 58 (01) : 305 - 324

[6] DEWIT CT, 1953, 594 VERSL LANDB OND

[7] DRAPER NR, 1966, APPLIED REGRESSION A

[8] HANWAY J., 1955, Soil Science Society of America. Proceedings, V19, P77

[9] HANWAY JJ, 1962, 503 IOW AGR EXP STA, P407

[10] The quantitative mineral nutrient requirements of plants [J]. PLANT PHYSIOLOGY, 1936, 11 (04) : 749 - 764