Vol. 5 (2) : March-April 2014 issue
Green Farming Vol. 5 (2) : 289-291 ; March-April, 2014
Efficacy of pre- & post emergence herbicides on plant growth, weed density & yield of onion in Chhattisgarh plains
NISHA JANGRE1*, C.R.GUPTA2, NANDAN MEHTA3 and ARUN KUMAR SONI4
Deptt. of Horticulture, Sant Kabir College of Agriculture and Research Station, Kawardha - 491 995 (Chattisgarh)
Designation : 1Asstt. Professor *(nisha11horticulture@gmail.com), 2Dean, 3Sr. Scientist,
4Rural Agric. Extn. Officer
Subject : Horticulture (Spices, Ornamental & Plantation Crops, Floriculture and Landscape Architecture etc.)
Paper No. : P-1169
Total Pages : 3
Received : 29 October 2013
Revised accepted : 18 February 2014
First Page
Citation :
NISHA JANGRE, C.R. GUPTA, NANDAN MEHTA and ARUN KUMAR SONI. 2014. Efficacy of pre- & post emergence herbicides on plant growth, weed density & yield of onion in Chhattisgarh plains. Green Farming Vol. 5 (2) : 289-291 ; March-April, 2014
ABSTRACT
The study was conducted in order to identify the weed species in onion fields in Chhattisgarh plain . An experiment was conducted during rabi season (October-March) of 2008-2009 to find out the effect of weed management practices on growth and yield of onion, weed dynamics and economics. Onion variety “Nasik Red” was grown as a test crop and transplanted on 20th November 2008 with spacing 15x10 cm. A total of seven weed species belonging to seven family were identified in onion field that were surveyed. The maximum weed density (20.62%) was recorded with Parthenium hysterophorus followed by Cyperus rotundus(19.35%) and Cynodon dactylon (19.00%). The result obtained amoung ten treatments revealed that higher numbers of leaves per plant noted in hand weeding twice at 20 &40 DAT similarly maximum bulb girth(4.81 cm) and bulb weight(93.00g) was recorded under hand weeding twice at 20 &40 DAT. The treatment oxyflourfen @ 0.20 kg ha-1 pre-transplanting + hand weeding at 20 DAT resulted in greater plant height, weed control and yield under Chhattisgarh plains situation
Key words :
Butachlor, Herbicide, Onion, Pendimethalin oxyfluorfen, Weed dynamics, Weed management.