TY - BOOK AU - Desh Beer singh TI - Studies on chemical weed control in patharnakh (Pyrus Pyrifolia) (Burm.) Nakai) Orchard U1 - T 634.139.58 D36S PY - 1990/// CY - Ludhiana PB - PAU KW - PEER -- WEED CONTROL KW - AGRO TECH KW - HERBICIDES KW - HORT KW - PEAR KW - WEEDS N2 - The herbicides Diuron at 40, 50 and 60 kg/ha, Atrazine at 50,60 and 70 kg/ha, Simazine at 6.0, 70 and 80 I/ha were applied at pre-emergence stage of weeds Whereas Glyphosate at 50,6.0 and 70 kg/ha and Paraquat at 50,6.0 and 7.0 I/ha were applied at one mo ER -