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- [3] NITROGEN LOSSES FROM LABELED AMMONIUM-SULFATE AND UREA APPLIED TO A FLOODED RICE SOIL FERTILIZER RESEARCH, 1985, 6 (03): : 199 - 203
- [5] NITROGEN LOSSES FROM UREA, AMMONIUM-SULFATE, AND AMMONIUM-NITRATE APPLICATIONS TO A SLASH PINE PLANTATION SOIL AND CROP SCIENCE SOCIETY OF FLORIDA PROCEEDINGS, 1980, 39 : 19 - 23
- [8] NITRIFICATION AND NITRATE MOVEMENT FROM AMMONIUM-SULFATE AND UREA IN SANDY SOILS AS AFFECTED BY THEIR PREVIOUS APPLICATIONS FERTILIZER RESEARCH, 1989, 21 (01): : 29 - 36
- [9] UREA, AMMONIUM-SULFATE AND DICYANDIAMIDE TRANSFORMATIONS IN COSTA RICAN SOILS FERTILIZER RESEARCH, 1987, 12 (03): : 255 - 261
- [10] NITRIFICATION POTENTIAL OF 5 SOILS AMENDED WITH UREA AND AMMONIUM-SULFATE ZENTRALBLATT FUR MIKROBIOLOGIE, 1993, 148 (07): : 523 - 527