INFLUENCE OF BIOFERTILIZER WITH ZINC AND BORON ON THE GROWTH AND YIELD OF BLACK CUMIN (Nigella sativa L.)

Abstract

An experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during November 2020 to March 2021 to study the influence of biofertilizer with zinc and boron on the growth and yield of black cumin. Black cumin variety BARI Kalozira-1 was used as planting material in this study. The experiment consisted of two factors: Factor-A: biofertilizer (4 levels): T 0 = 0

kg ha -1 (control), T 1 = 4

kg ha II

-1 , T 2 = 8

kg ha -1 , T 3 = 12 kg ha -1 ; Factor-B: zinc and boron (4 levels): M 0 = 0

kg ha -1 (control), M 1 = 4 kg Zn ha -1 , M 2

and M 3 = 4 kg Zn + 2 kg B ha -1 . The experiment was laid out in a randomized complete block design (factorial) with three (3) replications. Data on different growth, yield contributing and yield parameter of black cumin were recorded and significant variation was observed from different treatments. In case of biofertilizer the tallest plant (54.19 cm) was observed from T 3 ) treatment. The maximum primary branch plant -1 = 2 kg B ha (12 kg ha (7.25), secondary branch plant

(11.38), capsules plant -1 (21.50), seeds capsules -1 (98.15), seed yield plant (5.13 g), seed yield plot -1 (167.90 g), seed yield ha -1 (1119.3 kg), 1000 seed weight (3.18 g) and germination percentage (92.83%) was observed from T 3 ) treatment. In case of zinc and boron the tallest plant (53.76 cm) was observed from M 3 = (Zn 4 kg + B 2 kg ha -1 )

treatment. The maximum primary branch plant (6.97), secondary branch plant -1 (10.90), capsules plant -1 (21.65), seeds capsules (98.29), weight of seed plant -1 (5.14 g), weight of seed plot -1 (12

-1 kg ha -1 -1 (168.69 g), weight of seed ha

(1124.60 kg), 1000 seed weight (3.19 g) and germination percentage (93.33%) were observed from M 3 = (Zn 4 kg + B 2kg ha -1 )

treatment. The highest BCR (2.66) was obtained from the T 3 M 3 treatment combination where as the lowest BCR (1.76) was from T 0 M 0 treatment combination. It may be concluded that, sowing of black cumin providing 12 kg biofertilizer with 4 kg Zinc and 2 kg Boron along with RDF was recorded to be more suitable practice for getting higher amount of seed of black cumin.