EFFECT OF TRANSPLANTING DATES AND SEEDLING NUMBER HILL -1 ON GROWTH AND YIELD OF AROMATIC RICE VARIETIES

Abstract

The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from July to December, 2018 with a view to study the effect of transplanting dates and seedling number hill -1 on growth and yield of aromatic rice varieties. The experiment consisted of three factors. Factor A: two varieties viz. V 1 (BRRI dhan34) and V 2 (Tulsimala). Factor B: four transplanting date viz. T 1 (14 th August), T 2 (21 st August), T 3 (28 th August) and T 4 (4 th September). Factor C: three treatment of number of seedlings hill -1 viz. S 1 (2 seedling hill -1 ), S 2 (3 seedlings hill -1 ) and S 3 (4 seedlings hill -1 ). The experiment was laid out in RCBD (Factorial) design with three replications. The results showed that variety, transplanting date and number of seedlings hill -1 had the significant effects on plant height, number of tillers hill , dry matter weight hill -1 , total tillers hill -1 , number of filled and unfilled grains panicle , grain yield, straw yield, and biological yield and harvest index. Results showed that V 2 (Tulsimala) transplanted on T 1 (14 th August) with S 2 (3 seedling hill -1 ) produced tallest plant (153.60 cm) and V 1 (BRRI dhan34) transplanted on T 4 (4 th -1 September) with S 2 (3 seedling hill -1 ) provided shortest plant (107.44 cm). Interaction of V 1 gave maximum dry matter weight hill -1 (36.28 g) and minimum from V 2 T 4 S 2 (19.95 g). BRRI dhan34 (V 1 ) transplanted on 28 th August (T 3 ) with 3 seedling hill -1 (S 2 ) provided highest number of total tillers hill -1 (17.51), effective tiller hill -1 (16.33), panicle weight (2.42 g), number of grain panicle -1 (263.7), number of filled grains panicle -1 (206.33), grain yield (5.01 t ha -1 ), and biological yield (13.88 t ha -1 ). V 2 T 1 S 3 provide highest straw yield (10.23 t ha -1 ). Minimum grain yield (2.09 t ha -1 ) and Biological yield (7.55 t ha ) were found with the interaction of V 2

T 4 S 1 .