Devendra Kumar Dewangan1 , Shivam Soni2 , Anushree Singh3 and Ishu Sahu4
Department of Agronomy1, Department of Genetics and Plant Breeding2
Department of Agronomy3, Department of Horticulture4
Indira Gandhi Krishi Vishwavidyalaya, Raipur-492012, Chhattisgarh, India
Email: devendewangan@gmail.com
Abstract : An experiment carried out to find out the yield attributes and yield of rice(Oryza sativa L.) as influenced by integrated weed management in system of rice intensification (SRI) under Chhattisgarh plains during Kharif season of 2009 at Research cum-Instructional Farm, Department of Agronomy, IGKV, Raipur (C.G.). The experiment laid out in Randomized Block Design (RBD) with three replications. Results revealed that post-emergence combined application of Fenoxaprop-p-ethyl 60 g ha-1+ Ethoxysulfuron 15 g ha-1 at 20 and 35 DAT was statistically at par with hand weeding (twice) at 20 and 40 DAT for producing yield attributing characters like plant height, test weight, number of grain panicle-1 etc. under system of rice intensification method of rice. Grain yield and straw yield was recorded maximum under the post-emergence application of Fenoxaprop-p-ethyl 60 g ha-1+ Ethoxysulfuron 15 g ha-1 at 20 and 35 DAT followed by hand weeding twice. However, both were comparable. All the treatments gave significantly higher seed yield than unweeded control. The highest gross return and B:C ratio was obtained from Fenoxaprop-p-ethyl 60 g ha-1+ Ethoxysulfuron 15 g ha-1 at 20 and 35 DAT followed by hand weeding and lowest from unweeded control.
Keyword : Weed management, yield attributes, integrated weed management, rice
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