A field experiment was managed during kharif season of 2014 in G. B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) to assess the outcome of applying dissimilar rates of triasulfuron on the transplanted rice (Oryza sativa L.) associated weeds. Treatments composed of triasulfuron at three different rates, metsulfuron methyl, ethoxysulfuron, 2, 4-D with 2 checks (weed free and untreated). Experiment was carried out in Randomised block Design with 8 treatments and 3 replications. Grassy weeds, broad leaf weeds and sedges were observed during the crop growth period. Triasulfuron at 12 g ha-1 proved most efficient in controlling weeds at 60 and 90 days after transplanting (DAT) with 44.4 % and 59.6 % WCE respectively. Minimum weed dry matter (65.1 g m2) was observed with triasulfuron at 12 g ha-1. Out of all the herbicidal treatments, triasulfuron at 12 g ha-1 gave the paramount grain yield of rice (5786 kg ha-1) which was significantly surpassing all other herbicidal treatments, while it was minimum in metsulfuron methyl at 4 g ha-1 (4417 kg ha-1).
Triasulfuron, Weed Control Efficiency (WCE), Broad Leaf weeds (BLW), Yield
Clements F.E. University Publishing Company; 1905. Research Methods in Ecology.
Cochran and Cox, John Wiley & Sons, Inc. (1957). Randomized Complete Block Designs, Adapted from Experimental Designs, 2nd ed.
Ferrero, A. and Tinarelli, A. (2007). Rice cultivation in the E.U. ecological conditions and agronomical practices. Pesticide Risk Assessment in Rice Paddies: Theory and Practice, pp. 1-24.
Krishnamurthy, P., Sreedevi, B. and Singh, S.P. (2007). Evaluation of combination weedicides in transplanted rice. Indian Journal of Plant Protection, 35(2): 331-334.
Mani, V. S., Chakraborty, T. K. and Gautam, K. C. (1973). Double hedge weed killers in peas. Indian Farming. 26(2): 80-83.
Nagarajan, R. and Chinnusamy, C. (2015). Evaluation of Bensulfuron methyl and butachlor herbicide tank mix on weed control and productivity of transplanted rice (Oryza sativa L.) The Ecoscan, 9(1&2): 537-540.
Pavithra, M. and Poonguzhalan, R. (2018). Weed flora of aerobic rice and their effect on growth, yield and nutrient uptake by rice Oryza sativa in the coastal region of Karaikal of Puducherry. Journal of Applied and Natural Science ,10 (1): 397 -402.
Rekha, B., Jayadeva1, H. M., Kombali, G., Nagaraju, G. B. Mallikarjuna and Geethakumari, A. (2015). Growth and yield of aerobic rice grown under drip fertigation. The Ecoscan, 9(1&2):435-437.
Sridevi, V., Jeyaraman, S., Chinnusamy, C. and Chellamuthu, V. (2013). Weed Management in lowland rice (Oryza Sativa L.) Ecosystem. International Journal of Agriculture Sciences and Research, 3 (3): 13-22.
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