Effect of spraying with molybdenum and iron on the growth and seed yield of Nigella damascene L.

الملخص EN

This study was conducted in Agricultural College/ Dohuk University during 2007 and 2008 growing season.

To test the effects of Fe fertilizer at (0, 100, 200, 300) mg.l-1 sprayed twice, the first was on 1/2/2008 and the second was one month later, and Mo at (0, 100, 200) mg.l-1 after one week interval with Fe on vegetative and seed yield of Nigella damascene L.

Results showed that spray with 100 mg.

l-1 of Mo was superior over other treatments in 100 seed weight 8.51%more than control, the highest fruits number and seed yield per plant were accompanied with 200 mg l-1 of Mo (37.75, 38.20)% for the two characteristics respectively, Also 100 and 200 mg.l-1 of Fe has significantly effects in fruits number, seeds yield per plant, and the highest percentage arrive (31.76, 35.14)% than control for the two levels respectively, The dual interaction between the Mo and Fe show significantly effects on all the characteristics, the highest number of fruit per plant was obtained from plants that sprayed with 200 mg.l-1 for Mo and 200 mg.l-1 of Fe, and the highest seeds weight per plant arrive 107.47% more than control for plant that spray with 200 mg.l-1 of Mo and 100 mg.l-1 Fe