Productivity and profitability of rice (Oryza sativa) genotypes as influenced by crop management practices under middle Indo-Gangetic Plains Kumar Santosh1, Kumar Rakesh1,*, Mishra J.S.2, Dwivedi S.K.1, Prakash Ved1, Rao K.K.1, Singh A.K.3, Bhatt B.P.4, Singh S.S.5, Haris A.A.6, Kumar Virendar7, Srivastava Ashish Kumar7, Singh Sudhanshu7, Yadav Ashok8 ICAR Research Complex for Eastern Region, Patna, Bihar, 800 014 1Scientist, Division of Crop Research, Indian Institute of Pulses Research, Kanpur 2Head (Division of Crop Research), Indian Institute of Pulses Research, Kanpur 3Principal Scientist, Indian Institute of Pulses Research, Kanpur 4Director; Indian Institute of Pulses Research, Kanpur 5Head, Crop Production, Indian Institute of Pulses Research, Kanpur 6Principal Scientist (Agronomy), ICAR-CPCRI, Kayamkulum, Kerala 690 533 7IRRI-India, New Delhi, 110012 8CSISA, Bhubaneswar, Odisha, 751014 *Corresponding author's Email: rakeshbhu08@gmail.com
Online published on 4 August, 2018. Abstract A field experiment was carried out during the wet seasons of 2012 and 2013 at Patna, Bihar, to evaluate the performance of 7 promising rice (Oryza sativa L.) genotypes under 2 crop establishment methods, viz. best management practices (BMPs) and system of rice intensification (SRI). Results revealed that BMPs recorded significantly higher grain yield, biological and production efficiency than to SRI. Among the rice genotypes, ‘IR83387 B-B 40-1’ recorded significantly higher grain yield (4.86 t/ha) followed by ‘Abhishek’ (4.52 t/ha) and ‘Shusk Samrat’ (4.40 t/ha). Rice genotype ‘IR83387 B-B 40-1’ found significantly superior in terms of gross and net returns ( 66.3×103/ha and 34.5×103/ha) to rest of the genotypes. Moreover, BMP gave the highest carbohydrate equivalent and carbon output (3.34 t/ha and 4.71 t CO2/ha) as compared to SRI (3.17 t/ha and 4.22 t CO2/ha). Top Keywords Best management practices, Carbohydrate equivalent, Carbon output, Rice genotypes, SRI. Top |