FERTILIZER NITROGEN - ITS ROLE IN DETERMINING CROP YIELD LEVELS

[1] BAIRD BRUCE L., 1959, AGRON JOUR, V51, P152

[2] A NUTRIENT MOBILITY CONCEPT OF SOIL-PLANT RELATIONSHIPS [J]. SOIL SCIENCE, 1954, 78 (01) : 9 - 22

[3] Cooke G. W., 1962, Soils and Fertilizers, V25, P417

[4] CUMMINGS GW, 1945, SOIL SCI SOC AM P, V10, P240

[5] EFFECT OF RAINFALL ON CORN YIELD RESPONSE TO APPLIED POTASSIUM [J]. AGRONOMY JOURNAL, 1962, 54 (03) : 276 - +

[6] ENGELSTAD O. P., 1961, AGRON JOUR, V53, P389

[7] LOSS OF PHOSPHORUS BY EROSION [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1952, 16 (04): : 338 - 342

[8] HANWAY JJ, 1962, 503 IOW STAT U RES B

[9] HANWAY JJ, 1961, 494 IOW STAT U RES B

[10] HAWKINS A, 1945, SOIL SCI SOC AM P, V10, P252

[1] BAIRD BRUCE L., 1959, AGRON JOUR, V51, P152

[2] A NUTRIENT MOBILITY CONCEPT OF SOIL-PLANT RELATIONSHIPS [J]. SOIL SCIENCE, 1954, 78 (01) : 9 - 22

[3] Cooke G. W., 1962, Soils and Fertilizers, V25, P417

[4] CUMMINGS GW, 1945, SOIL SCI SOC AM P, V10, P240

[5] EFFECT OF RAINFALL ON CORN YIELD RESPONSE TO APPLIED POTASSIUM [J]. AGRONOMY JOURNAL, 1962, 54 (03) : 276 - +

[6] ENGELSTAD O. P., 1961, AGRON JOUR, V53, P389

[7] LOSS OF PHOSPHORUS BY EROSION [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1952, 16 (04): : 338 - 342

[8] HANWAY JJ, 1962, 503 IOW STAT U RES B

[9] HANWAY JJ, 1961, 494 IOW STAT U RES B

[10] HAWKINS A, 1945, SOIL SCI SOC AM P, V10, P252