Efficiency of rice (Oryza sativa)-based crop sequences under coastal ecosystem

A field experiment conducted during 1994-95 and 1995-96 at Bhubaneswar reve aled that preceding in situ green manuring of cowpea was beneficial for sig nificant and highest grain yield of rice (3.26 t/ha). The yield attributes such as panicle length, fertile grains/panicle and harvest index were close ly associated with the highest grain yield of rice. Rice-tomato ('BT 10') r ecorded highest net return (Rs 60, 618.95/ha) and benefit : cost ratio (4.4 2). Rice-groundnut recorded highest land use efficiency (63.86%) and energy output : input ratio (4.54). The production efficiency was however, superi or (105.61 kg/ha/day) in rice-cabbage sequence.