INFLUENCE OF DIFFERENT LEVELS OF POTASH AND SULFUR ON GROWTH, YIELD, STORAGE LIFE AND NUTRINTS CONTENT OF BARI PIAZ-6

Abstract

An experiment was undertaken at the farm of Sher-e-Bangla Agricultural University (SAU), Dhaka, Bangladesh during October 2020 to June 2021 to evaluate the influence of different levels (100, 120, 140 and 160 kg K ha ii -1 ) of potash and sulfur (5, 15, 25, and 35 kg S ha -1 ) on growth, yield, storage life and nutrients content of BARI Piaz-6 in Randomized Complete Block Design (RCBD) having two factors with three replications. There was no significant difference among the doses of sulfur in the plant height, neck diameter, dry foliage weight plant -1 and the percent of weight loss at 1, 2 and 3 months interval with respect to weight of bulb at harvest of BARI Piaz-6. But significant difference was observed in the leaf number, leaf length, bulb diameter, bulb height, individual bulb weight, bulb yield, the concentration of N, P, K and S in bulb of BARI Piaz-6 due to different doses of S. In case the effect of different doses of potassium showed significant variation in the above all parameters of BARI Piaz-6, where the highest and lowest results were obtained at 140 and 100 kg ha -1 potassium doses, respectively except the percent weight loss at 1, 2 and 3 months interval with respect to weight of bulb at harvest. The interaction effects of different doses of S and K significantly influenced on all growth and yield data. The highest plant height, leaf number, leaf length, neck diameter, fresh foliage weight, dry foliage weight, bulb diameter, bulb height, individual bulb weight, bulb yield, and P, K, S concentration in bulb were observed at 140 kg ha -1 potassium with 35 kg ha

dose of sulfur and the lowest values of these parameter were found at the lowest doses of S (5 kg S ha -1 ) and K (100 kg K ha -1 ) combination. The interaction effect of sulfur and potassium doses significantly differed the percent weight losses with respect to weight of bulb at harvest during storage at 1, 2 and 3 months interval, where the highest weight loss was (11.36 %) and the lowest values of weight loss was 6.69% at 1 month interval. In case of 2 and 3 months interval, the highest weight losses (16.77 and 22.20 %) were found respectively.