• Effect of nitrogen, phosphorus fertilizers and plant distances on growth of Nigella sativa L. Vegetative growth and seed oil production. Mesopotamia J. of Agric., Vol 34, No., 3, 2006. 17-26.
• Effect of nitrogen, phosphorus fertilizer and plant distances on growth of Nigella sativa l (2-seed chemical components) international conference on the technology of horticultural productivity for Sustainable Developments and Biodiversity, Faculty of Agriculture, Aleppo, 2nd – 4th Dec 2007.
• Effect of high level of nitrogen, phosphorus fertilizer, pinching, and planting seed rate on (1-vegetative growth and seed yield) of Nigella sativa L. Mesopotamia J. of Agric., Vol 36, No. 2, 2008.
• Effect of high level of nitrogen, phosphorus fertilizer, pinching, and planting seed rate on (2-seed chemical components) of Nigella sativa L. Mesopotamia J. of Agric., Vol 36, No., 2, 2008..
• Effect of planting media and boron spray on growth of Adiantum tenerum 'Scutum Roseu' plant. Meso J. of Agric. 35 (4) 2007: 2-8.
• Using of some environmental materials to obtain suitable media for potted plants and evaluateion of four kinds of foliar fertilizers through its effect on (1-vegetative and roots growth) of Nephrolepis exaltata l.
• Effect of Indol Butyric Acid Source of cutting and diameter on rooting of Myrtus communes plant.    J. Duhok Univ. Vol. 10 No.2 .07.
• Effect of Media and Indole Butyric Acid on Shoot Tip Cutting of Myrtus communis L. J. Duhok Unvi. 12 (2) 2009. Yousif Hussen Hammo
• Effect of liquorice root extract and nitrogen on vegetative and root growth of Asparagus densiflours ‘Var. sprengeri’.Vol. 38 No 3 2010. Yousif Hussen Hammo
• Effect of liquorice root extract and nitrogen on vegetative and root growth of Adiantum capillus – Veneris. Vol. 38 No 3 2010. Yousif Hussen Hammo

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