Evaluating Bioefficacy of Certain Herbicides Against Weeds in Indian Bean (Dolichos lablab)

Abstract

To study the integrated weed management in Indian bean (Dolichos lablab), a field experiment was conducted during kharif seasons of 2015 and 2016 on medium black calcareous clayey soil at Junagadh, Gujarat, India. Pendimethalin 37.8% CS as pre-plant incorporation (PPI), pendimethalin 30% EC, oxyfluorfen 23.5% EC and pre-mix pendimethalin 30% + imazethapyr 2% EC as pre-emergence (PE), while quizalofop-ethyl 5% EC, imazethapyr 10% SL and pre-mix imazethapyr 35% + imazamox 35% WG as post-emergence were tested in integration with hand weeding and interculturing. The dominant weed flora observed in the experimental field were Echinochloa colona, Eluropus villosus, Cyperus rotundus, Amaranthus viridis, Chenopodium album, Digera arvensis, Indigofera glandulosa, Dactyloctenium aegyptium, Portulaca oleracea, Commelina nudiflora and Phyllanthus niruri. The results revealed that HW thrice, pendimethalin 30% EC 900 g a.i. ha^-1 as PE fb HW at 45 DAS and pendimethalin 38.7% CS 900 g a.i. ha^-1as PPI fb HW at 45 DAS were found effective in controlling weeds by recording lower dry weight of weeds (136, 229 and 332 kg ha^-1), lower weed index (5.24%, 16.45% and 19.30%) and higher weed control efficiency (90.31%, 83.69% and 76.35%) as compared to the unweeded check. These treatments also improved growth and yield attributes viz., plant height, pods per plant, pod length, seeds per pod and 100-seed weight, and ultimately recorded higher seed yield (1267, 1117 and 1079 kg ha^-1) of Indian bean.

Keywords: Indian bean, Dolichos lablab, Pendimethalin, Oxyfluorfen, Imazethapyr

Cite this Article

Mathukia RK, Sagarka BK, Gohil BS et al. Evaluating Bioefficacy of Certain Herbicides against Weeds in Indian Bean (Dolichos lablab). Research & Reviews: Journal of Crop Science and Technology. 2018; 7(2): 39–43p