EFFECT OF NITROGEN AND BORON ON THE GROWTH AND YIELD OF POTATO (Solanum tuberosum)

Abstract

The experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka, (AEZ -28), Bangladesh during November 2019 to February 2020 to study the effect of nitrogen and boron fertilizer on yield components and yield of potato (Solanum tuberosum). Three nitrogen levels; N 0 = 0 kg N ha -1 , N 1 = 100 kg N ha , N 2 = 150 kg N ha -1 and N 3 = 200 kg N ha -1 and four Boron levels; B 0 = 0 kg B ha -1

and B 2 = 2 kg B ha -1 were considered for the present study. The experiment was laid out in the two factors Randomized Complete Block Design (RCBD) with three replications. Data on different growth, yield components and yield of potato were recorded. Most of the parameters were significantly influenced by different levels of N application. The highest tuber yield ha -1 (22.22 t) and marketable yield ha -1 (20.96 t) were found from the treatment N 2 (150 kg N ha -1 ) compared to control treatment N 0 (0 kg N ha ). Boron treatment also significantly influenced all the studied parameters and the highest tuber yield ha -1 (21.73 t), and marketable yield ha -1 (20.32 t) were achieved from the treatment B 2 (2 kg B ha -1 ) compared to control treatment B 0 (0 kg B ha -1 ). Considering combined effect of N and B, the highest plant height (67.26 cm), number of stem hill (5.33), number of leaves hill -1 (73.54) number of tuber hill -1 -1 , B 1 = 1 kg B ha -1 -1 (7.76), weight of tuber hill

(213.66 g), weight of tuber plot -1 (8.26 kg), tuber yield ha -1 (26.62 t) and marketable yield ha 1 -1 (25.53 t) was recorded from the treatment combination of N 2 B 2 (150 kg N ha + 2 kg B ha -1 ) whereas lowest plant height (44.85 cm), number of stem hill (2.60), number of leaves hill -1 (34.34), number of tuber hill -1 -1 (4.57), weight of tuber hill

(91.20 g), weight of tuber plot -1 (3.23 kg), tuber yield ha -1 (9.55 t) and marketable yield ha -1 (8.19 t) were found from the treatment combination of N 0 B 0 (0 kg N ha + 0 kg B ha -1 ). -1 -1 -1 - -1