INFLUENCE OF POPULATION DENSITY AND VARIETY ON GROWTH AND YIELD OF RAPESEED-MUSTARD

Abstract

The experiment was conducted at the field of the Sher-e-Bangla Agricultural University farm, Dhaka to evaluate the performance of population density and variety on growth and yield of Rapeseed-Mustard. The experiment consists of two factors (1) Variety and (2) Population density. Four varieties viz. (i) V = BARI Sarisha-13, (ii) V 2 = BARI Sarisha-15, (iii) V 3 1 = BARI Sarisha-16 and (iv) V = SAU Sarisha-3 were used and four population densities were used viz. (i) P = 100000 plants ha -1 ; i.e. 10 plants m -2 (ii) P 2 = 400000 plants ha -1 ; i.e.40 plants m

(iii) P 3 = 700000 plants ha -1 i.e. 70

plants m -2 and (iv) P 4 = 1000000 plants ha i.e. 100 plants m -2 .Significant variation was found in all parameters at different growth stages of rapeseed- mustard. Different varieties showed significant variation at different stages. Data also showed that V 3 P (BARI Sarisha-16 × 10 plants m -2 1 ) gave the tallest plant (170.90 cm) but the highest leaf length (29.79 cm), leaf breadth (9.16 cm), length of siliqua (7.94 cm), seeds siliqua (26.03), 1000 seed weight (4.10 g), seed yield (1.60 t ha -1 ) and harvest index (41.02%) were found from V 1 P 3 (BARI Sarisha-13 × 70 plants m -2 ) where the highest dry weight plant -1 (22.70 g), branches plant -1 (7.56) and siliquae plant -1 (145.70) were found from V 1 P 1 (BARI Sarisha-13 × 10 plants m -2 ). Again, the maximum stover yield (2.93 t ha -1 ) and biological yield (4.06 t ha -1 ) were found from V -1 3 P 3 -1 4 1 -2 (BARI Sarisha-16 × 70 plants m -2 ) and V 1 P 4 (BARI Sarisha-13 × 100 plants m ) respectively. Considering individual effect, BARI Sarisha-13 (V ) gave the highest seed yield (1.35 t ha -1 ), biological yield (3.55 t ha -1 1 ) and harvest index (37.65%) where P 3 (70 plants m -2 ) gave the maximum seed yield (1.32 t ha ), stover yield (2.33 t ha -1 ), biological yield (3.48 t ha -1 ) and harvest index (36.14%). So, above all deliberation, the best result was achieved from the treatment combination of BARI Sarisha-13 × 70 plants m -2 (V 1 P 3 ). -1 -2