Author(s): R. K. MATHUKIA, B. K. SAGARKA, D. M. PANARA AND S. J. VEKARIYA

Abstract: The field experiment was conducted during rabi 2014-15 to 2016-17 on clayey soil at Junagadh (Gujarat) to evaluate the efficacy of some pre- and post-emergence herbicides in combination with hand weeding (HW) for weed management in cumin. The major weed flora observed in the field were monocots viz., Brachiaria spp. (signal grass), Asphodelus tenuifolius (wild onion), Indigofera glandulosa (three leaf indigo), Echinochloa colona (Barnyard grass) and Dactyloctenium aegyptium (crow foot grass), dicots viz., Chenopodium album (common lambs quarters), Digera arvensis (false amaranth), Amaranthus viridis (pigweed), Portulaca oleracea (purslane), Physalis minima (ground cherry), Euphorbia hirta (common spurge) and Leucas aspera (thumba), and Cyperus rotundus (purple nutsedge) as sedge. The results revealed that the treatments viz., weed free, pendimethalin 900 g ha-1 as preemergence fb HW at 45 DAS and oxadiargyl 75 g ha-1 as early post-emergence at 7 DAS fb HW at 45 DAS significantly enhanced growth and yield attributes viz., plant height, number of branches per plant, number of umbels per plant, number of umbellates per umbel, number of seeds per umbel and 1000-seed weight, and ultimately increased seed (967, 934 and 919 kg ha-1) and stalk (2007, 1892 and 1849 kg ha-1) yields over unweeded check. These treatments also recorded the lower dry weight of weed at harvest (69, 188 and 277 kg ha-1) and weed index (0.00, 3.38 and 4.95%) as well as higher weed control efficiency (96.21, 89.62 and 88.06%) along with higher net returns (Rs. 64291, 66772 and 65328 ha-1) and B:C ratio (3.17, 3.80 and 3.74) over unweeded check.

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