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.

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Experiment was carried out in plastic house that belong to the Red Rose Nursery / Dohuk government in autumn season between 1 st Oct 2018, to 30 th May 2019, to discuss the effect of media ( peat moss, sand and peat moss+ sand), & IBA concentrations (0, 4000, 6000, 8000) mg.l -1 on rooting might of Semi-hardwood cuttings of photinia (Photinia x fraseri) plant. Results indicate that the highest rooting percentage (50.88) %, plant high (19.17) cm, vegetative fresh weight (9.10) gm and vegetative dry weight (4.09) gm was recorded in cutting that planted in peat moss media which significantly superior than other media. in the other hand the 6000 & 8000 mg.l -1 of IBA caused increased in rooting percentage reached 50.56% and 51.78% respectively , vegetative fresh and dry weight also significantly increase when applied to 4000 and 6000 mg.l -1 of IBA they reached to 8.87 gm, 3.82 gm compared with 2.62gm for control. In addition, fresh and dry root weight significantly increased with IBA increase from 4000 to 6000 mg. l -1 , the highest length of plant is significantly increased reaching 34.11 for 6000-mg. l -1 . The interaction between media and IBA concentrations cased increased significantly in all parameters and the highest rooting percentage (73.33) %, plant high (43.33) cm, leaf number (24.00) leaves were for peat moss media and 600 mg. l -1

This study was carried out in the Agricultural College/ Salahalden University during the period between

This field experiment was conducted during the season [2005][2006] in Singar -Mosul city to investigate the effects of very high level (320 N, 300 P 2 O 5 ) kg ha -1 , and high level (280 N, 260 P 2 O 5 ) kg ha -1 of nitrogen and phosphorus fertilizer, pinch and with out pinch, and plant seed rate sowing 0.6, 0.8, 1.0, 1.2 g/10m 2 was done by hand within 3, 4, 5, 6 rows respectively in (10)m 2 plot size on seed components of Nigella sativa L. The experiment was laid out in randomized complete block design with three replications. The results include the following. Very high levels of nitrogen and phosphorus caused a significant increase in fixed oil, volatile oil, protein, and phosphorus; in contrast carbohydrate was significantly decreased, while humidity and ash cannot be affected with this factor. Pinching nigella plants causes a significantly increasing in fixed oil, ash, and carbohydrate of seeds while volatile oil, protein, and phosphorus were decreased significantly when compared with non pinched plants. Increased seed rate sowing from 0.8 to 1.2 g/10m 2 caused significant increasing in fixed oil when compared with 0.6 g/10m 2 while decreased seed rate sowing 0.6, 0.8 g/10m 2 caused significant increases in volatile oil and ash when compared with 1.0, 1.2 g/10m 2 . Protein also Increased significantly from 20.67 to 24.40 with decreased seed rate sowing from 1.2 to 0.8 g/10m 2 .while medium rate cause significant increase in phosphorus when compared with lowest and highest rate, the lowest rate of see rate give the highest percentage of carbohydrate when compared with other .