EFFECT OF NITROGEN AND SULPHUR ON THE GROWTH AND YIELD OF BLACK CUMIN

Abstract

An experiment was conducted at the Farm of Sher-e-Bangla Agricultural University, Dhaka during rabi season (November to March) of 2018-19 to examine the effect of nitrogen and sulphur on growth & yield of black cumin (Nigella sativa L.). The experiment comprised of four levels of nitrogen viz. N 0 (0 kg N ha (30 kg N ha -1 ), N 2 (60 kg N ha -1 ) and N 3 (90 kg N ha -1 ii

-1 ), N ) and three levels of sulphur viz. S (0 kg S ha -1 ), S 1 (10 kg S ha -1 ) and S 2 (20 kg S ha -1 ). The experiment was set up in Randomized Complete Block Design (factorial) with three replications. There were 12 treatment combinations in all. Nitrogen and phosphorous levees singly as well as in combination had significant effect on most of the characters studied. The tallest plant was recorded at 90 kg N ha -1 followed by 60 kg N ha -1 at different growth stages. Application of 90 kg N ha -1 gave the maximum primary and secondary branches plant -1 , capsules plant -1 , seeds capsules -1 , 1000 seed weight and seed yield of 1446.00 kg ha -1 . The highest plant height, primary branches plant , secondary branches plant -1 , capsules plant -1 , 1000 seed weight and seed yield of 1142.00.00 kg ha -1 was recorded at 20 kg S ha -1 closely followed by 10 kg S ha -1 . Application of 90 kg N ha -1 coupled with 20 kg S Nha -1 gave the maximum capsules plant and seed yield of 1643.00 kg ha -1 which was similar to those parameters obtained from 90 kg N ha -1 × 10 kg S ha -1 and 60 kg N ha -1 × 20 kg S ha -1 . The highest concentration of N, K and S in post harvest soil was recorded in the treatment combination of 90 kg N ha -1 coupled with 20 kg S ha -1 .