A field experiment was carried out during the Kharif season of two consecutive years 2015 and 2016 at Instructional Farm, Jaguli, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal with the focal objective to assess the effect of different weed control measures on yield of transplanted kharif rice, IET 4786. Experiment having 3 replications was conducted in Randomized Block Design with nine treatments, namely, T1- Pendimethalin 30% EC + Pyrazosulfuron ethyl 10 % WP @ 675 + 15 g a.i, T2- Pendimethalin 30% EC + Pyrazosulfuron ethyl 10 % WP @ 900 + 200 g a.i, T3- Pendimethalin 30% EC + Pyrazosulfuron ethyl 10 % WP @ 1125 + 25 g a.i, T4- Pendimethalin 30% EC @ 1500 g a.i, T5- Pyrazosulfuron ethyl 10 % WP @ 15 g a.i, T6- Pyrazosulfuron ethyl 10 % WP @ 20 g a.i, T7- Metsulfuron methyl 10 % + Chlorimuron ethyl 10 % WP @ 4 g a.i, T8- Hand weeding and T9- Weedy check. Significant variations were observed on the mixed weed flora as well as on performance of rice under the different herbicidal treatments.Pendimethalin 30% EC + Pyrazosulfuron ethyl 10% WP @ 1125+25 g a.i) was found to be the most effective recording the lowest weed population and weed dry weight with the highest weed control efficiency (83.5% in 2015 and 79.8 % in 2016) and the highest number of panicles m-2 (215.1 in 2015 and 231 in 2016), number of filled grains panicle-1 (85.39 in 2015 and 115.47 in 2016) and grain yield of rice (3.60 t/ha in 2015 and 5.30 t/ha in 2016). The lowest grain yield(2.20 t/ha in 2015 and 3.40 t/ha in 2016) and the highest weed density were observed in weedy check plots.
Chauhan, B.S., (2012). Weed ecology and weed management strategies for dry seeded rice in Asia. Weed Technol. 26, 1e13.
Chauhan, B.S. and Johnson, D.E. (2011). Growth response of direct seeded rice to oxadiazon and bispyribac-sodium in aerobic and saturated soils. Weed Sci. 59: 119-122.
Chauhan, B.S., Opena, J., (2012). Effect of tillage systems and herbicides on weed emergence, weed growth, and grain yield in dry-seeded rice systems. Field Crops Res. 137, 56e69.
FAO. (2017). FAOSTAT Database FAO, Rome, www.faostat.fao.org (accessed June, 2017).
Jackson, M. L. (1967). In. Soil Chemical Analysis. Prentice Hall of India, Ltd., New Delhi
Khaliq, A., Matloob, A., Ahmad, N., Rasul, F. and Awan, I.U. (2012). Post-emergence chemical weed control in direct-seeded fine rice. Journal of Animal and Plant Sciences. 22(4): 1101-1106.
Mahajan, G., Chauhan, B.S. and Johnson, D.E. (2009). Weed management in aerobic rice in north westernindo-gangetic plains. J. Crop Improv. 23: 366-382.
Menon Syama S, Prameela P and Abraham C. T. 2014. Weed control in wet-seeded rice by post-emergence herbicides. Indian J. Weed Sci.46:169-71.
Sheeja., Raj, K., Nimmy Jose., Reena Mathew and Leenakumary, S. (2013). Chemical management of non-grassy weeds in direct-seeded rice. Indian Journal of Weed Science. 45(3): 159â€“162.
Mishra, J.S.,Dixit, A., Jay, G. and Varshney.(2007). Efficacy of penoxsulam on weeds and yield of transplanted rice (Oryza sativa). Indian Journal of Weed Science. 39 (1&2): 24-27.
Panse, V. G. and Sukhatme, P. V. (1978). In Statistical Methods for Agricultural Workers (3rd Ed.). Indian Council of Agricultural Rsearch, New Delhi.
Prakash H.C., Shekara B.G., Jahadeesh B.R., Kalayanmurthy K.N., Sivalingam M.L. (2008) Paddy pulse cropping system for sustaining soil health and rice yield in Cauvery command area. Res. on Crops.9(1):7-9.
Patra, A.K., Halder, J and Mishra, M.M. 2011. Chemical weed control in transplanted rice in Hirakud command area of Orissa. Indian Journal of Weed Science. 43 (3& 4): 175-177.
Kaur, S. and Singh, S. (2015). Bio-efficacy of different herbicides for weed control in direct-seeded rice. Indian Journal of Weed Science. 47(2): 106â€“109.
Saha, S. and Rao, K.S. 2010. Efficacy of metsulfuron methyl for controlling broadleaf weeds in transplanted rice (Oryzasativa) under rainfed shallow lowland.Indian J Agri Sci.80: 522â€“26.
Singh, S., Ladha, J.K., Gupta, R.K., Bhushan, L. and Rao, A.N. (2008). Weed management in aerobic rice systems under varying establishment methods. Crop Protec. 27: 660-671.
Singh, V. P., Singh, G., Singh, R.K., Singh, S. P., Kumar, A., Dhyani, V. C., Kumar, M. and Sharma, G. (2005). Effect of herbicides alone and in combination on direct seeded rice. Indian J. Weed Sci. 37:197-201
Teja, K.C., Duary, B., Kumar, M. and Bhowmick, M.K. (2015). Effect of bensulfuronmethyl + pretilachlor and other herbicides on mixed weed flora of wet season transplanted rice. International Journal of Agriculture, Environment and Biotechnology. 8(2): 323-329.
Walkley, A. and Black, C. A. (1934). An examination of the different method for determining soil organic matter and proposed modification of the chromic acid titration method. Soil Sciences. 37(1): 29-38.
Yadav, D. B, Yadav, A. and Punia, S. S. (2009). Evaluation of bispyribac sodium for weed control in transplanted rice. Indian Journal of Weed Science. 41 (1 & 2): 23-27.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Â© Author (s)