Effects of application of nitrogen and vermicompost on growth performance and yield of Bari Chinashak-1 (Brassica chinensis L.)

A field experiment was carried out at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh from March to May 2018 to investigate the effects of various doses of nitrogen and vermicomposton growth and yield performance of BARI Chinashak-1. The research work comprised of two factors, factor A: four doses of nitrogen viz., (i) N0-0 kg N/ha, (ii) N1-90 kg N/ha, (iii) N2-120 kg N/ha and (iv) N3-150 kg N/ha and factor B: Three doses of vermicompost viz.,(i) V0-0 ton/ha, (ii) V1-3 ton/ha and (iii) V2-5 ton/ha. The tallest plant (38.71 cm), maximum leafnumber /plant (13.99), highest length (34.99 cm) and breath (22.70cm) of leaves and maximum yield (26.27 t/ha) were recorded when 150 kg N/ha was applied. The shortest plant (31.03 cm), minimum leaf number/plant (11.82), shortest length (28.31 cm) and breath (18.50 cm) of leaves and minimum yield (18.34 t/ha) was found in the plots that did not get any nitrogen (0 kg N/ha). In case of vermicompost, the maximum plant height (36.79 cm), number of leaves/plant (13.97), the highest leaf length (33.84 cm) and breath (22.09 cm) and maximum total yield (24.70 t/ha) was observed at 5 ton/ha, whereas the shortest plant (33.32 cm), minimum number of leaves/plant (12.22), the lowest leaf length (29.68 cm) and breath (19.57 cm), and minimum total yield (20.98 t/ha) was observed with 0 ton/ha. For combined effect, the tallest plant (40.56 cm), maximum leaf number (15.33), length (36.50 cm) and breath (24.11 cm) of leaves, plant spread (77.10 cm) were observed from N3V2combination.