Effect of npks dose and plant density on seed yield and profitability of brassica campestris cv. bari sarisha 9 under late sown condition

Abstract

Abstract : A field experiment was conducted at the research farm of Crop Botany Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during rabi season of 2007-2008 to study the yield and economic performance of Brassica campestris cv. BARI Sarisha 9 under late sown condition as affected by NPKS fertilizer dose and plant density. There were three levels of fertilizer doses viz. I =^75^20^28^ 18 kg/ha, ^2=^i 10^30^40^25 ^ha, F3=N,45P40K52S33 kg/ha and three levels of plant density viz. P]=60 plants/m2, P2=80 plants/m2, P3 =100 plants/ m2 in the experiment. Seeds of rapeseed variety BARI Sarisha 9 were sown on 28,h November, 2007. Results showed that siliqua/ plant and seed yield/ha were significantly influenced by different NPKS fertilizer doses and plant densities, and also 1000 seed weight by plant densities. Their interaction effects showed significant influence on siliqua/ plant, seeds/siliqua and seed yield/ha. Fertilizer dose N145P40K52S33 kg/ha plus 100 plants/m2 performed better with respect to seed yield/ha. This treatment combination gave up to 25% higher seed yield (1053 kg/ha) compared to its control (842 kg/ha). Farmers may grow BARI Sarisha 9 using this technology to get higher gross return (Tk. 37,988), net return (Tk. 10,573) and benefit cost ratio (1.39) under late sown condition.