OPTIMIZING THE PRODUCTIVITY AND PROFITABILITY OF ONION SEED BY APPROPRIATE MANAGEMENT OF ORGANIC MANURE AND BULB SIZE

Abstract

An experiment was conducted in the central research fam of Sher-e-Bangla Agricultural University. Dhaka. durimi the period from October 2013 to March 2014. to study optimizing the productivity and profitability of onion seed by appropriate management of organic manure and bulb size. The experiment consisted with two factors. Factor A: Four combination of organic manures such as M1 = control. M2 — IS tfha Cowdung4-l0 vim Poultry manure. M 3 15 I/ha Cowdung-'-2.2 tiha Mustard oil cake and M4 15 i/ha Cowdung±l0 t/ha Poultry manure 12.2 t/ha Mustard oil cake. Factor B; Four sizes of onion bulbs such as S1 =2g. S ,

4g. 5; = 6g and S1 = 8g. The experiment was laid out in a Randomized Complete Block Design with 16 treatment combinations. Application of' different organic manures and bulb size significantly influenced by plant height and number of leaves per plant at different growth stages ., days required to first bolting. number of umbels/plant, days required to first anthesis. number of seeds per umbel, seed yield per plant, per plot and per heclare, weight of 1000 seeds and seed vigor index. But it did not show any significant effect on seed germination (%).The maximum seed yield 567.3 Kg/ha with net income (1k 126.07.65) and BCR (2.74) was obtained from M 4S4 treatment combination which was statistical]' identical to M 4S3 treatment combination and the minimum seed yield 185.3 Kg/ha with net income (11 245086.2) and BCR (1.61) was observed from M 1 51 treatment combination. Thc BCR (2.94) from Mi S treatment combination is higher than BCR (2.74) from M 1 S1 treatment combination. So economic analysis revealed that the M.,S 3 treatment combination appeared to be the best for achieving higher productivity and profltahi I ity ofonion seed production.