Santosh Kumar Sahu*, R.L. Sharma and R.M. Yadav
Krishi Vigyan Kendra (IGKV), Gariyaband (CG)
* email: sssahu0084@yahoo.com
Abstract: A field trial was conducted during the kharif seasons of 2012 on transplanted rice (Oryza sativa L.) at Chhura,Gariyaband district of Chhattisgarh, with an objective to identify effective of Almix for the control of complex weed flora of transplanted rice, works through both contact and residual soil activity, hence provides weed management in rice for a longer period. Almix was also not prone to volatilization. It is difficult to raise weed free in transplanted rice due to the application of only one convectional herbicide and unfavorable condition during puddling time. Application of combine formulation of Chlorimuron + Metsulfuron (Almix) 20 % WP @ 0.004 kg ai/ha as post-emergence at 25 DAT to obtained effective control of weeds such as Eclipta alba (Bhringraj) Monochoria vaginalis, Sagittaria pygmaea, Commelina benghalensis, Sphenoclea zeylanica, Cyperus iria, Cyperus difformis and Fimbristylis miliaceae in paddy fields. Grain yield (Qtl/ha) of treatment plot was recorded higher, lower and average 50.0, 34.5 & 42.25, respectively with the application of Chlorimuron + Metsulfuron (Almix) @ 0.004 kg ai/ha) at 25 days after transplanting (DAT). However, Grain yield (Qtl/ha) of farmer practice plot was reduces under recorded higher, lower and average 36.84, 28.95 & 32.90, respectively with the manual weeding twice at 20 & 40 days after transplanting (DAT). Average cost of cultivation (Rs./ha) of treatment plot & farmer practice plot were 20750 &19987, respectively. The cost benefit ratios of treatment and farmer practice plots were 2.55 & 2.05, respectively.
Keywords: Crop Management, Herbicidal Weed Control and Transplanted Rice
REFERENCES
Bahar, F.A. and Singh,Govindra. (2004). Effect of herbicides on dry seeded rice (Oryza sativa L.) and associated weeds. Indian Journal of Weed Science 36 (3&4) 269-270.
Bhat M. Anwar, Hussain Ashaq, Ganai Manzoor Ahmad, Mushki G.M. (2011). Effects of Herbicide use alone and in combination on weeds and transplanted rice (Oryza sativa L.) unde temperate conditions of Kashmir. Applied Biological Research,13(2):75-78
Bohra, J.S., Verma, K. R., Singh, R.P., Singh, J.P. and Singh,Y. (2006). Crop establishment option in rice wheat system under irrigated conditions of Varanasi. In : Extended summaries, Golden Jublee National Symposium on “Conservation Agriculture and Environment”. 26-28 October 2006, Indian Society of Agronomy, BHU, Varanasi, India. Pp. 48-49.
Budhar, M.N. and Tamilselvan, N. (2002). Effect of stand-etablishement technique on yield and economics of lowland irrigated rice. Indian Journal of Agronomy 47(1): 57-60.
Mohan, K.S., Muniyappa, T.V. and Shiva Kumar, H.R. (2005). Effect of pre-emergence herbicides on growth and yield of direct seeded puddle rice (Oryza sativa L.). In: Extended summaries, National Biennial Confference, 6-9 April,2005. , Indian Society of Weed Science, PAU, Ludhiyana, India. Pp. 28-29.
Subbalakshmi, S. and Pandian, B. J. (2002). Effect of water management practices and crop establishment technique on weed growth and productivity of rice. Indian Journal of Weed Science 34 (3/4) 275-277.
Walia U. S., Bhullar M. S., Nayyar Shelly, Walia S. S. (2008). Control of Complex Weed Flora of Dry-seeded Rice (Oryza sativa L.) with Pre- and Post-emergence Herbicides. Indian Journal of Weed Science 36 (3&4):161-164.