Economics of Weed Management in Lawn

Lawn is an area of land planted with grasses or other durable plants, which are maintained at a short height and used for aesthetic and recreational purposes. Field experiment was conducted during the period from November to December 2013 to manage the weeds in lawn. The experimental plot consists of bermuda grass which was established through turfing. The experimental plot was laid out in a Randomized Complete Block Design (RCBD) having 17 treatments with three replications. The major weed species, observed in the experimental plots were Cyperus rotundus (sedge), Panicum repens, Digitaria marginata (among grasses), Ageratum conyzoides, Bidens spilosa, Alternanthera sessilis, Cinebra didyma, Desmodium triflorum, Emilia sanchifolia, Euphorbia hirta, Oxalis latifolia and minor weeds were Borreria articularis, Chromalaena odorata, Cyanotis spp., Mimosa pudica, Parthenium hysterophorus, Phyllanthus niruri, Sida acuta, Tridax procumbens. The highest cost incurred for management sedge and broad leaf weeds in lawn with Cynodon dactylon by hand weeding was Rs.26820/ha. Among herbicide treatments, carfentrozone ethyl 40 DF at (0.5 kg/ha) was Rs.5650/ha whereas lowest cost incurred for weed management in lawn 2, 4-D sodium salt 80 WP at (1.0 kg/ha) was Rs.894/ha followed by 2, 4-D sodium salt 80 WP at (1.5 kg/ha) was Rs.1041/ha. Based on experiment result 2, 4-D dimethyl amine salt 58% EC at 2 kg/ha of water effective herbicide for weed management in lawn.