Abstract
This research was conducted in the field of Gerdarasha at college of Agricultural Engineering Sciences/ University of Salahaddin- Erbil during the winter season of 2020-2021. It shows the effect of zinc and manganese applied as foliar spray, on some growth parameters and yield of flaxseed (Linum usitatissimum L.). A factorial experimental design was applied in a randomized complete block design with three replications; the first factor represents three levels of Zinc: (0, 200 and 400) ppm and the second factor was three concentrations of manganese (0, 200 and 400) ppm. The combined effect of foliar application by 400 Zn and 400 ppm of Mn, produced the highest value of a plant height, leaf area, LAI, dry matter, crop growth rate and secondary branches, number No. of capsules plant -1, capsule weight (g), number of seeds capsule-1, weight of 100 seed (g) seed yield (kg. ha-1), oil content% and oil yield (kg. ha-1), while 200 ppm Mn obtained the highest value for fruiting height (cm) and primary branches. The interaction between (Zn 400 with 400) ppm of Mn recorded the highest value of a plant height, leaf area, LAI, dry matter, crop growth rate, secondary branches, number No. of capsules plant -1, capsule weight (g), number of seeds capsule-1, weight of 1000 seed (g), and oil content%. On the other hand, the interaction (400 Zn with 200) ppm of Mn recorded the highest value in fruiting height (cm) and primary branches, secondary branches, seed yield (kg. ha-1) and oil yield (kg.ha -1).
