Influence of varieties and crop establishment methods on production potential, economics and energetic of wet-seeded rice (Oryza sativa) under Island ecosystem.

摘要

A field experiment was conducted in Andaman and Nicobar Islands, India, during the rainy (kharif) seasons of 2003 and 2004 to evaluate the performance of 3 rice cultivars (C 14-8, Quing Livan No. 1 and Zen-gui-AT 1) as affected by 4 establishment methods (surface wet sowing, anaerobic wet sowing, line transplanting and random transplanting). Quing Livan No. 1 registered higher yield (3635 kg/ha) and net return (8187 rupees/ha), and lower specific energy (3.83 MJ/kg), than the other 2 cultivars. Among the establishment methods, anaerobic wet sowing resulted in a higher grain yield (2993 kg/ha), net return (7087 rupees/ha) and energy ratio (8.34) than surface wet sowing and transplanting.