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A field experiment was conducted during kharif (summer) season of 2014, aim of the experiment was to investigate suitable crop geometry and cultivar and their influences on performance of dry direct-seeded rice (Oryza sativa L.), experimental treatments were consisting of 15 treatments, namely, main plots: five cultivars (MTU 7029, NDR 97, HUR 105, HUR 4-3 and PRH-10) and sub-plots: three crop geometryâ€™s (20 x 10, 20 x 20 and 25 x 25 cm2). All the data recorded were statistically analyzed using the standard procedures of split-plot design. The results indicated that amongst cultivars, aromatic rice hybrid PRH-10 recorded significantly more grain yield (5582.32 kg/ha) than cultivar HUR 4-3 (4612.99 kg/ha) and NDR 97 (3397.82 kg/ha), whereas; it was statistically comparable with cultivar MTU 7029 (5489.24 kg/ha) and HUR 105 (5022.03 kg/ha). The cultivar PRH-10 also registered higher gross return (105771.9 `/ha), net return (66389.08 `/ha) and production efficiency (592.76 `/ha/day) than the remaining cultivars. The higher grain yield of PRH-10 over these cultivars was due to considerable improvement in most of its yield attributing characters like panicle length (27.92 cm), a number of grains/panicle (178.70) and test weight (26.35 g). In a case of crop geometry treatment, plant spacing of 25 x 25 cm2 recorded higher grain yield as compared to remaining plant spacing while the plant spacing of 20 x 10 cm2 recorded higher gross return, net return and production efficiency as compared to 20 x 20 and 25 x 25 cm2. Plant geometry plays an imperative role towards improving the grain yield of cultivars in direct seeded rice by optimal utilization of natural resources. Therefore, for getting higher net return and production efficiency, cultivar PRH-10 at plant spacing 20 x 10 cm2 can be raised in dry direct-seeded rice in Varanasi region of Eastern Uttar Pradesh.

Influence of crop geometry and cultivars on growth, yield and production efficiency of dry direct-seeded rice (Oryza sativa L.)