GROWTH AND YIELD RESPONSE OF SESAME TO THE NITROGEN LEVELS AND SPACING

Abstract

An experiment was conducted at the Agronomy Field, Sher-e-Bangla Agricultural University Ohaka during the period from April to June 2007. The experiment was designed to study the efIbct of different nitrogen level and spacing on growth and yield of sesame. The experiment consisted of four nitrogen levels viz. No 0. N, = 30, N 2 = 60 and N3 = 90 kg ha -1 and four levels of spacing viz. Sj = 30 cmx Scm; S2= 30cm x 10 cm: 53 = 40 cmx 5 cm and S4 = 40 cmx 10 ent. The experiment was laid out in a split plot design with three replications. Sesame variety 1-6 was used in the experiment. The result showed that nitrogen and spacing had significant influence on crop characters viz plant height, number of leaves plant", above ground dry weight, number of branches plant". number of capsules plant', number of seeds capsule". 1000-seed weight. seed yield, stover yield, biological yield and harvest index. The highest seed yield (1102.00 kg ha") was recoded from 30 kg N ha" and the yield decreased with further increase in nitrogen rates. Plant spacing of 30 cm x 10 cm (333333 plants ha") influenced plants to have maximum seed yield (1010.00 kg ha"). Population either lower or greater then 333333 plants ha" gave lower yield. Optimum population for 30cm x 10cm nourished with 30 kg N ha' registered maximum seed yield (1405.00 kg ha"). It was evident that higher seed yield was obtained due to aggregation of yield components like capsules plant", seeds capsulc"and 1000-seed weight which farther Justified with the increased value of harvest index.