EFFECT OF HIGH LEVELS OF NITROGEN AND PHOSPOURS FERTILIZER, PINCHING, AND SEED RATE ON GROWTH AND YIELD COMPONENTES OF Nigella sativa L.

Abstract

Field experiment was conducted during the season [2005][2006] in Singar -Mosul city to investigate the effects of high level (280 N, 260 P 2 O 5 ) kg ha -1 and very high level (320 N, 300 P 2 O 5 ) kg ha -1 fertilizer, pinch and without pinch, and plant seed rate sowing (0.6, 0.8, 1.0, 1.2) g/10m 2 cultivated within 3, 4, 5, 6 rows respectively in (10) m 2 plot area on growth and yield of Nigella sativa L. The experiment was laid out in randomized complete block design with three replications. The results indicated that. Very high level of nitrogen and phosphorus caused a significant increase in plant length, stem diameter, fresh weight, plant seed yield and total seeds yield kg/ha, were as branches number, and fruits number cannot be effected significantly by previous factor. Pinching causes a significantly increased in branches number, fruits number, while plant high decreased significantly. Increased seed rate sowing from 0.6 to 1.2 g/10m 2 caused a significant increasing in branches number, fresh weight, and plant seeds yield, while stem diameter, and fruits number didn't effected significantly by this factor except total seeds yield kg/ha which increased significantly when seed rate sowing are increased to 1.2g/10m 2 and they reach 651. 85, 843.56, 1076.51, 1232.67 kg/ha for the four seed rate consecutively.

Effect of Pinching Date and Potassium Fertilizer rate on Growth and Productivity of Roselle (Hibiscus sabdariffa, L.) Plant

“…It is quite clear from the data in Moreover, pinching causes a significantly increased in fruits number of black cumin compared to un-pinched plants [28]. Kumar et al [6] reported that stevia plants pinched at 40 days after transplanting recorded significantly higher number of leaves per plant, fresh leaf weight at 1 st harvest and about 27.7% higher total dry biomass of leaves as compared with control.…”

Evaluation of black cumin genotypes for yield and yield related parameters in bale mid altitude, southeastern Ethiopia

“…Black cumin, Nigella sativa L. is an annual herbaceous plant belonging to the family Ranunculacea (Hammo, 2008).…”

The Effect of Honeybee (<i>Apismellifera</i>) Pollination in Enhancing Yield of <i>Nigella sativa</i> (Darbera Variety) in the High Land of Bale

“…Black Cumin (Nigella sativa L.) is an annual herbaceous plant belonging to the family Ranunculacea [1] It is one of the seed spices grown in Ethiopia having a commercial demand both in the domestic as well as in the international market. It is one of crops chosen in the specialization program to be produced by selected potential areas.…”