Journal of Experimental Agriculture International

The present study highlights about yield and yield attributes of black cumin under varied row spacing conditions in agro-climatic conditions of Bangladesh. Black cumin (Nigella sativa L.), is an important spice crop and also has medicinal properties. Various factors are responsible for improving the growth and yield of black cumin per unit area. Among them, sowing methods is an important factor for affecting the growth and yield of black cumin. For successful production of any crop, appropriate sowing density or planting density is very important. The experiment was carried out during November, 2020 to March, 2021 at experimental field of Spices Research Sub-Centre, Bangladesh Agricultural Research institute, Faridpur to study the effect of different row spacing on yield and yield related attributes of black cumin. Experiment was laid at Randomized Complete Block Design with three replications. At 30, 60 and 90 days after sowing, the highest plant height (9.63, 48.11 and 58.49 cm) was achieved from 10 cm x 10 cm spacing. Again, the lowest plant height (8.74, 45.30 and 47.88 cm) was observed at 30 cm x 10 cm. The highest number of branches per plant (8.46), capsules per plant (24.10), seeds per capsule (96.88) was recorded from R₃ (30 cm x 10 cm) treatment. The lowest number of branches per plant (7.02), capsules per plant (20.66), seed per capsule (81.89) was recorded from R₁ (10 cm x 10 cm) treatment. The maximum 1000 seed weight (2.44 g) was recorded from R₂ (20 cm x 10 cm) treatment, whereas the lowest 1000 seed weight (2.22 g) was recorded from R₁ (10 cm x 10 cm) treatment. The seed yield was maximum (978.66 kg/ha), when the seeds were sown in 20 cm x 10 cm row spacing, followed by the value of seed yield on 10 cm x 10 cm row spacing (923.83 kg/ha), while the least performance (817.58 kg/ha) was obtained from the 30 cm x 10 cm treatment.