INFLUENCE OF DIFFERENT CULTIVATION METHODS ON GROWTH AND YIELD OF HYBRID AND INBRED RICE

Abstract

A field experiment was carried out at Agronomy Field Laboratory, Sher-e-Bangla Agricultural University, Dhaka during the period from December 2005 to May 2006 to study the influence of different cultivation methods on hybrid and inbred rice in horo season. The experiment consisted of two level of treatments viz, variety and cultivation method. The experiment was laid out in spi it-plot design with four replications. Experimental results showed that variety had significant effect on all the agronomic parameters except panicle length. total grains panicle", straw yield and biological yield. The highest grain yield (8.26 t ha") with lowest straw y ield (7.25 I ha")was obtained from Sonarhangla-1 and BRRI dha.n 29 gave the lowest grain yield (7.53 t ha") with highest straw yield (9.58 t ha"). Cultivation method also significantly influenced all the growth and yield attributes except unfilled grains paniele". 1000-grains weight and straw yield. The results revealed that nursery seedlings showed the best performance compared to other cultivation method. The highest grain yield (8.73 t ha") and straw yield (9.21 I ha") was obtained from the nursery seedlings and the lowest grain yield (7.23 1 ha") and straw yield (7.19 t ha'1 ) was obtained from the SRI. Maximum harvest index 52.47 was calculated in the SRI and minimum harvest index 46.22 was thund in the sprouted seeds broadcast. 'Fillers hill" of SRI was the highest among the treatments, however, it failed to perform well in terms of effective tillers rn'2 . though sprouted seeds sown in line and broadcast showed opposite trends. The plants from sprouted seeds and SRI matured early compared to the nursery seedlings and clonal tillers. Sprouted seeds of the hybrid variety sown in line required 113 days, which is 33 days less than the required time for the traditional method of the inbred rice variety.