Location and site: The experiment field is located at the Sher-e-Bangla Agricultural University, Dhaka.
Planting material: The tow rice cultivars Bina sail and BR 22 were taken for this experiment. The varieties are Transplant Late Aman type.
Design: RCBD with tow factorials
Factor 1: Rice varieties 2 (V1: BR 22 and V2 : Bina-sail)
Factor 2: Transpanting dates and ages of seedling: 4
T1: 15 September (Transplanting of 4 weeks aged seedlings)
T2: 22 September (Transplanting of 5 weeks aged seedlings)
T3: 29 September (Transplanting of 6 weeks aged seedlings)
T4: 06 October (Transplanting of 7 weeks aged seedlings)
Treatment combiantion = 3 x 4 = 12
Replication: 3
Raising of seedling: The sprouted seeds were sown uniformly in the well-prepared seed bed in 18th August, 2013
Land preparation: The experimental field was opened with a power tiller.
Fertilizer application: At the time of first ploughing cow dung at the rate of 1 t/ha was applied. The plots were fertilized with 85, 60, 50 and 16 kg/ha urea, triple super phosphate (TSP), muriate of potash (MP) and gypsum respectively.
Uprooting and transplanting of seedlings: Four, 5, 6 and 7 weeks old seedlings of tow rice cultivars were uprooted from the seed beds carefully and transplanted at the experimental fields according to T1, T2, T3 and T4 treatments with row to row distance 25 cm and hill to hill distance 15 cm. The 3 seedlings per hill were maintained.
Harvest and post harvest operation: The crop was harvested after the grains attained maturity. The grains were threshed, cleaned and sun dried to record grain yield/plot.
Sampling and data collection: Data collections from the experiment on different growth stages were done
Plant Height (cm):
Number of effective, non-effective and total tillers hill-1:
Number of filled, unfilled grains and spikelets panicle-1:
1000-grain weight (g):
Grain yield (t/h):
Analyses of plant samples for estimating N, P and K: The harvested rice plants were immediately separated into shoot and panicle. Rice shoot samples were analyzed for estimation of N, P and K constituents through acid digestion techniques by macro-Kjeldahl digestion system.
Statistical Analysis: The data were compiled and tabulated in proper form and were subjected to statistical analysis.