INFLUENCE OF PLANTING TECHNIQUE ON GROWTH AND YIELD OF AMAN RICE

Abstract

A field experiment was carried out at Agronomy Field of Sher-e-Bangla Agricultural University, Dhaka during June to November, 2005 to study the influence of planting technique on growth and yield of aman rice. The experiment consisted three levels of treatments viz, A. Planting material (3): Sprouted seed (M,), Nursery seedling (M 2) and Clonal tiller (M3 ); B. Variety (2): Inbreed variety (SRI I, Mukta)-V, and Hybrid variety (Sonar Bangla-1)-V2; C. Planting method (2): Broadcast (Th) and Line sowing (T2 ). The experiment was laid out in a split- split-plot design with four replications. Experimental results showed that planting material had significant effect on all the agronomie parameters like plant height, number of tillers hilr', Leaf area index (LA!), Total dry weight, flowering and maturity dates, filled grain panicl&', 1000-grain weight, grain yield, straw yield and harvest index except effective tillers hill'. The results revealed that clonal tiller (M3 ) showed the best performance than other planting material. The highest grain yield (4.96 t hi') and second highest straw yield (5.22 t hi') were obtained from clonal tiller while nursery seedling gave the second highest grain yield (4.50 t hi') and lowest straw yield (5.20 ton hi'). The lowest grain yield (4.24 t hi') and highest straw yield (5.47 t hi) obtained from the sprouted seeds. Variety also significantly influenced all the growth and yield attributes except effective tillers hill', straw yield and harvest index The highest grain yield (4.70 t hi') and lowest straw yield were obtained from hybrid variety Sonar bangla-1, and the inbreed variety BRII gave the lowest grain yield (4.43 t ha") and highest straw yield. Methods of planting had significant effect only on grain yield and harvest index and other parameter were insignificant. The result also reveled that line sowing method showed better performance than broadcast method, where highest grain yield (4.81 t hi') was obtained from line sowing method and the lowest grain yield hi) was got from the broadcast method. Maximum harvest index 0.48 was counted in line sowing and 0.45 in haphazard method. The combined effect of planting material, variety and planting method had also significant effect on growth and yield, the highest grain yield was obtained from the clonal tiller of hybrid variety with line sowing method.