EFFECT OF STORAGE DURATIONS OF UPROOTED RICE SEEDLINGS AT DIFFERENT ACES ON THE PERFORMANCE OF BRRI dhau3l AND BRRI dhan34

Abstract

The field experiment was conducted at the Agronomy Field Laboratory. Sher-el3angia Agricultural University (SAU). Sher-e-Bangla Nagar. Dhaka during the period from Jwie, 2008 to December. 2008 to study the effect of storage durations of uprooted rice seedlings at different ages on the performance of BRRI dhan3 and I3RRldhan34 tinder Modhupur tract (AEZ 28). The experiment comprised three different factors viz. A. Variety (2): BRRI dhan3l (V 1 ) and BRRI dhan34 (A2) and C. Storage durations (4): 0. 2, 4 and 6 days alter uprooting (D 0, D2, D 4 and D6 (V2 ). B. Seedling age (2): 30 days old seedlings 0 ,) and 40 days old seedlings respectively). The experiment was laid out in Randomized Complete Block Design (Factorial) with three replications. Results indicated that BRRI dhan3l performed better than BRRI dhan34. BRRI dhan3l produced significantly higher number of total tillers hill', effective tillers hill 1 . weight of 1000 grains, grain yield (4.41 t hi'). straw yield and biological yield and harvest index..he results also revealed that 30 days old seedlings showed the better performance than 40 days old seedlings. In respect of the longer panicle (26.64 cm) and the higher number of total grains panicle 1 (160.26), number of filled grains panicl&' (134.84), weight of 1000-grain (20.22 g) and grain yield (4.38 t hi'). Among the storage durations of uprooted rice seedlings, 0 days storage durations showed best performance. Showing higher plant height (126.66 cm), number of total grains panicl&' (158.86), number of filled grains panicle4 (138.54), 1000-grain weight (20.62 g), grain yield (3.98 t hi'), straw yield (6.68 t ha'). biological yield (10.66 t ha 1 ) and harvest index (37.33%) were found from 0 days storage duration. It was coiieluded that BRRI dhan3l with 30 days old seedlings stored for up to 4 days and 40 days old seedlings stored fbr 2 days showed no yield loss. Seedlings of BRRI dhan34 variety could be stored for 2 days of both aged seedlings.