TY - BOOK AU - ARUN SHANKAR TI - OPTIMIZING NITROGEN USE EFFICIENCY IN Bt COTTON THROUGH NEED BASED FERTILIZER NITROGEN MANAGEMENT U1 - T 633.518 7 PY - 2018/// CY - LUDHIANA PB - PAU KW - COTTON-FERTILIZERS AND MANURES KW - Bt COTTON KW - BOLL FORMATION KW - NITROGEN MANAGEMENT ER -