INFLUENCE OF CULTIVATION ON DISTRIBUTION OF NITROGEN IN SOILS OF USTOLL SUBORDER

[1] ALWAY FJ, 1909, 111 NEBR AGR EXP STA

[2] [Anonymous], AGRONOMY

[3] BREMNER J. M., 1959, JOUR AGRIC SCI, V52, P147, DOI 10.1017/S0021859600036625

[4] Bremner J.M., 1965, METHOD SOIL ANAL, P1238, DOI DOI 10.2134/AGRONMONOGR9.2.2ED.C34

[5] EFFECT OF LONG-TIME CROPPING ON SOIL PROPERTIES IN NORTHEASTERN NEW-MEXICO [J]. SOIL SCIENCE, 1950, 69 (05) : 359 - 368

[6] CHENG H. H., 1963, SOIL SCI SOC AMER PROC, V27, P312

[7] HAAS HJ, 1957, USDA1164 TECH B

[8] KEENEY D. R., 1964, SOIL SCI SOC AMER PROC, V28, P653

[9] FURTHER EVIDENCE FOR INABILITY OF KJELDAHL TOTAL NITROGEN METHOD TO FULLY MEASURE INDIGENOUS FIXED AMMONIUM NITROGEN IN SUBSOILS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1972, 36 (03): : 434 - +

[10] MEYERS HE, 1943, 56 KANS AGR EXP STA

[1] ALWAY FJ, 1909, 111 NEBR AGR EXP STA

[2] [Anonymous], AGRONOMY

[3] BREMNER J. M., 1959, JOUR AGRIC SCI, V52, P147, DOI 10.1017/S0021859600036625

[4] Bremner J.M., 1965, METHOD SOIL ANAL, P1238, DOI DOI 10.2134/AGRONMONOGR9.2.2ED.C34

[5] EFFECT OF LONG-TIME CROPPING ON SOIL PROPERTIES IN NORTHEASTERN NEW-MEXICO [J]. SOIL SCIENCE, 1950, 69 (05) : 359 - 368

[6] CHENG H. H., 1963, SOIL SCI SOC AMER PROC, V27, P312

[7] HAAS HJ, 1957, USDA1164 TECH B

[8] KEENEY D. R., 1964, SOIL SCI SOC AMER PROC, V28, P653

[9] FURTHER EVIDENCE FOR INABILITY OF KJELDAHL TOTAL NITROGEN METHOD TO FULLY MEASURE INDIGENOUS FIXED AMMONIUM NITROGEN IN SUBSOILS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1972, 36 (03): : 434 - +

[10] MEYERS HE, 1943, 56 KANS AGR EXP STA