Author(s): K. BANERJEE, B. RAY PRAMANIK AND A. M. PUSTE

Abstract: A field experiment was conducted during two consecutive spring seasons of 2011 and 2012 at the Sugarcane Research Station, Bethuadahari (Nadia) to asses the various herbicidal weed control measures to enhance sugarcane yield, quality and weed control efficiency in West Bengal. The pooled data of both the years revealed that among the different weed control treatments, application of herbicide metribuzine @ 1.25 kg ai ha–1 (PE) + Almix 20 g ha–1 at 75 DAP exhibited the maximum control of weeds and effectively lowered the weed density, weed dry matter accumulation as well as obtained higher weed control efficiency. The highest brix (20.33%), sucrose (17.16%), CCS (11.59%), CCS (9.49 t ha–1) and cane yield (82.39 t ha–1) were recorded with this treatment also. However, this result was statistically at par with the treatment receiving hoeing and weeding at 30, 60 and 90 DAP (days after planting). The highest net return of INR 1,05,390.00 ha–1 and B : C ratio of 2.63 were recoded under the application of metribuzine @ 1.25 kg ai ha–1 (PE) + Almix @ 20 g ha–1 at 75 DAP, which was closely followed by those of three hoeing and weeding (net return of INR 99,519.00 ha–1 and B : C ratio of 2.49).

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