抄録
The experiment was conducted on coriander (Coriandrum sativum L.) with application of nitrogen (N), phosphorus (P), potassium (K) and sulfur (S) at the research farm of the Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh with a view to determining the suitable combination of NPKS doses to obtain satisfactory yield of coriander seed in Salna areas of Bangladesh. All the yield attributes were significantly affected by the nutrient doses. The NPKS (80+40+40+20) kg/ha with a blanket dose of 5 tons cowdung gave the maximum number of leaves/plant, primary and secondary branches/plant, umbels/plant, seeds/umbel, 1000-seed weight, seed yield/plant and harvest index and thus gave the highest seed yield/ha (1.94 t/ha). The identical seed yield/ha was obtained from the treatment of NPKS (80+60+40+20) kg/ha (1.90 t/ha). From the regression equations, it came up to be the optimum doses of NPKS as (78.25+57.17+34.25+17.06) kg/ha, respectively. The cost-return analysis of fertilizer uses indicated that the maximum gross return and gross margin were recorded in treatment of NPKS (80+40+40+20) kg/ha (Tk. 97000 and Tk. 36940/ha, respectively). This treatment also gave the highest BCR of 1.61 and the maximum marginal rate of return (MRR) (502.67%).
