Effect of different doses of NPK on growth and yield of Nigella (Nigella sativa L.) near coastal belt of Mahuva, Bhavnagar - Gujarat

An experiment was conducted to study the effect of different doses i.e. 0:0:0 (control), 30:20:15, 35:25:20, 40:30:25, 45:35:30, 50:40:35, 55:45:40, 65:55:45, 75:65:50 and 80:70:60 kg / hectare of npk on growth and yield of Nigella sativa l. near coast of the arabian sea belt of mahuva distt bhavnagar - gujarat. An experiment designed by randomized block design with three replications. as a result in the study, plant height in (cm), days to 50% flowering, number of leaves / plant, no primary and secondary branches / plant, no of capsule / plant, number of seed / capsule, seed yield (g) / plant, test weight (g) and seed yield (qt / ha) were determined. it was observed that increasing dose of npk fertilizer had a parallel effect on plant growth characters and yield attributes traits. Among the plant growth characters and yield attribute traits applied different level of npk doses showed significant variation. the highest values were obtained in plant height (cm) 23.59, 25.59 & 46.53 at 30, 60 and 90 days after sowing, days to 50% flowering (59.06), number of leaves / plant (84.00), number of primary branches / plant (13.47), number of secondary branches / plant (25.47), number of capsule / plant (39.53), number of seed / capsule (90.99), seed yield (g) / plant (20.51), test weight (g) 3.80 and seed yield (q / ha) 11.66 from npk - 75:65:50 kg / ha application. as a result of the study, varying npk doses influenced the growth characters and yield attributes traits. Excessive fertilizer applications had a negative effect on the growth and seed yield.