R. B. Negalur A. S. Halepyati


Field experiment on effect of different weed management practices in machine transplanted rice (Oryza sativa L.) was conducted at ARS, Gangavathi, University of Agricultural Sciences, Raichur, Karnataka during kharif, 2012 and 2013 under irrigated condition in clay soil. Pooled mean indicated that, application of butachlor 50 EC fb passing of power operated low land rice weeder twice at 20 and 30 DAT with hand weeding in intra row space recorded significantly lower grassy weed population and dry weight at 40, 60 DAT and at harvest (1.98, 2.47, 2.97/0.25 m2 and 1.00, 1.20, 1.47 g /0.25 m2, respectively), sedge weed population and dry weight (2.61, 3.21, 3.52 /0.25 m2 and 1.19, 1.48, 1.71 g /0.25 m2, respectively) and broad leaved weed population and dry weight (1.68, 2.10, 2.52 / 0.25 m2 and 0.91, 1.06, 1.28 g /0.25 m2, respectively). Significantly higher WCE (87.53%), lower weed index (3.11 %), grain and straw yield (5160 and 6482 kg ha-1, respectively), gross and net returns (Rs. 92,212 and 50,410 ha-1, respectively), and B:C of 2.22 over unweeded check. Hence, application of butachlor 50 EC fb passing of power operated low land rice weeder at 20 and 30 DAT with hand weeding in intra row space was found to be the best weed control method as it recorded higher B:C. Present conventional manual weeding is which is not advantageous as it is costlier, time consuming and labour may trample and damage rice seedlings. Mechanical weeder and sequential application can overcome the same.


Download data is not yet available.


Metrics Loading ...




Conoweeder, Hand weeding, Low land power operated paddy weeder, Post emergent, Pre-emergent

Anonymous. (2014). The Hindu Survey of Indian Agric., pp. 43-46
Bajpai, R.P. and Singh, V.K. (1992). Effect of butachlor application on sprouted direct seeded rice in puddled field. Indian J. Agron, 37(1): 171-173
Behera, A.K. and Jena, S.N. (1998). Weed control in direct seeded rainfed upland rice. Indian J. Agron, 43(2): 284-290
Bhanu Rekha, K., Kavitha, P. and Srinivasa Raju, M. (2004). Performance of herbicides for weed control in transplanted rice (Oryza sativa L.). Andhra Agric. J., 51(1 & 2): 1-4
Bhat, I.A., Dileep Kachroo. and Manzoor Ahmad Ganai. (2008). Efficiency of different herbicides on growth and yield of direct wet seeded rice sown through drum seeder. Crop Res., 36(1, 2 & 3): 33-36
Dixit, A. and Khan, J. N. (2009). Improved cost effective implements for small rice farmers. Agricultural Mechanization in Asia, Africa and Latin America, 40 (2): 30-35
Jackson, M.L. (1973). Soil Chemical Analysis, (Ed.). Prentice-Hall of India, Pvt. Ltd., New Delhi, pp. 121-125
Mallikarjun, A.S., Channabasavanna, Sudheendrasaunshi. and Shrinivas, C.S. (2014). Effect of herbicides on weed control and yield of wetSeeded rice (Oryza sativa L.). The Bioscan, 9(2): 581-583
Olsen, S.R., Cole, C.L., Watanabe, F.S. and Deaw, D.A. (1954). Estimation of available phosphorous in soils by extraction with sodium bicarbonate. United States Departments of Agriculture Circular, p.939
Pasha, L.M., Krishna, L., Bhadru, D. and Naik, R.B.M. (2012). Comparative performance of different weed management practices in system of rice intensification. Madras Agric. J., 99(7-9):473-475
Sanjoy Saha. (2005). Evaluation of some new herbicide formulations alone or in tank mixture in transplanted rice. Indian J. Weed Sci., 37(1 & 2): 125-128
Sathyanarayana, V., Latchanna, A. and Varaprasad, P.V. (1997). Weed management in direct seeded upland paddy. Ann. Agric. Res., 18(3): 385-387
Srivastava, V.K., Krishan Mohan, T., Singh, R.P. and Singh, R.N. (2008). Bio-efficacy of sulfonylurea herbicides in transplanted ric (Oryza sativa L.). Indian J. Weed Sci., 40 (3&4): 193-195
Subbaiah, B.V. and Asija, G.L. (1956). Rapid procedure for determination of available nitrogen in soils. Current. Sci., 31: 196
Sunil, C.M., Shekara, B.G., Kalyanamurthy, K.N. and Shankara Lingappa. (2010). Growth and yield of aerobic rice as influenced by integrated weed management practices. Indian J. Weed Sci., 42(3 & 4): 180-183
Swapan Kumar Maity and Mukherjee, P.K. (2009). Integrated weed management in dry direct seeded summer rice. Indian J. Agric. Sci., 79(12): 28-31
Walia, U.S., Bhullar, M.S., Shelly Nayyar and Walia, S.S. (2008). Control of complex weed flora of dry-seeded rice with pre-and post-emergence herbicides. Indian J. Weed Sci., 40 (3&4): 161-164
Yadav, D.B., Ashok Yadav and Punia, S.S. (2009). Evaluation of bispyribac-sodium for weed Control in transplanted rice. Indian J. Weed Sci., 41(1 & 2): 23-27
Citation Format
How to Cite
Negalur, R. B., & Halepyati, A. S. (2016). Weed control efficiency and weed index as influenced by weed management practices in machine transplanted rice (Oryza sativa L.). Journal of Applied and Natural Science, 8(4), 1947–1952. https://doi.org/10.31018/jans.v8i4.1068
More Citation Formats:
Research Articles