Abu al-Dahab, M. (1992). Production of ornamental plants. Mars Publishing House, Riyadh, Saudi Arabia. Arab Republic of Egypt. P 14.
Al-Abdali, H. M. M. Sh. (2002). Effect of some nutrients, gibberellin acid and Licorice extract on the growth and production of flowers and calyx cleavage of cloves (Dianthus caryophyllus L), PhD thesis, Department of Horticulture, College of Agriculture, University of Baghdad, Iraq.
Al-Ajili, T. A. Z. (2005). Effect of GA3 and some nutrients on the production of glycyrrhizin and some other components in licorice plant. Master Thesis. College of Agriculture. Baghdad University. the Ministry of Higher Education and Practical Research, Iraq.
Al-Darwish, A. K. (1976). A study of the effect of the site and the date of harvest on the main components of the raw material and the dry extract of Licorice in Iraq. Master thesis. Department of Food Industries. faculty of Agriculture. Baghdad University. Iraq.
Al-Dulaimi, A. F. Z. (2012). Effect of spraying yeast suspension, licorice extract and K-Quelant Amino compound on the growth and yield of grapes, Hamburg Black. PhD thesis, Department of Horticulture and Landscape Engineering, College of Agriculture, University of Baghdad, Republic of Iraq, page 144.
Al-Haddad, M. A. M. (1998). The role of biofertilizers in reducing agricultural costs, reducing environmental pollution, and increasing crop productivity. Faculty of Agriculture-Ain Shams University. The national training course on the production and use of biofertilizers. the Hashemite Kingdom of Jordan.
Al-Mohammadi, A. F. A. (2010). The effect of planting dates, gibberellins and plant extracts on the growth and yield of caraway, PhD thesis, College of Agriculture, University of Baghdad, Iraq.
Al-Sahhaf, F. H. & Al-Marsoumi, H. G. K. (2001). The effect of cutting bulbs and spraying with gibberellins, licorice extract and some nutrients on the growth, flowering and seed yield of three varieties of onions (Allium cepa L) for. Iraqi Journal of Agricultural Sciences, 32,(1), 22-34.
Al-Samarrai, S. M. S. (2000). The effect of light intensity, benzyl adenine and ethephon on the vegetative and flowering growth of shrub rose plant, Sultani cultivar. Master Thesis. Albasrah university. faculty of Agriculture. Basra. Iraq.
Andersn, M. (2012). Plant Reproduction, Growth and Ecology. First Edition. Britannica Educational Publishing .29 East 21st Street New York, YY 10010.
Ayoob, M., Aziz, I. & Jite, P. K. (2011). Interaction effects arbuscular mycorrhizal fungi and different phosphatelevels on performance of Catharanthus roseus Linn Notulae Scientia Biologicae. (3): 75-79.
Devlin, R. M. (1975). Plant Physiology 3rd.ed. East-west Press. NewDelhi, Madras. India.
Donald, R. (2001). When there is too much light Plant Physiology. 125, 29-32.
Fitter, A. H. & Hay, R. K. (2002). Environmental Physiology of Plants Third Edition. 32 Jamestown Road, London. U.K.
Gary, C. (2002). Crop stresses and their management in greenhouse production. In VI International Symposium on Protected Cultivation in Mild WinterClimate: Product and Process Innovation, 614: 489-497.
Jakobsen, I. and Legget, M. E. (2005). Rhizosphere Microorganisms and Plant Phosphorus Uptake. In: Phosphorus: Agriculture and the Environment, Agronomy Monograph No. 46Madison, WI 53711, USA
John, M. K. (1970). Colorimetric determination of phosphorus in soil and plant materials with ascorbic acid. Soil Science, 109(4), 214-220.
Jones, E. R. (1991). A grower guide to the foliar feeding of plants. Washington and Oregon Farmer. 28, 13-17.
Keuskamp, D. H, Rashmi, S., & Ronald, P. (2010). Physiological regulation and functional significance of shade avoidance responses to neighbors, plant Signal Behavior. 5(6), 655-665.
Khattab, M. E. (1997). Growth and yield response of rosella new cultivar to foliar nutrient application. Bull N R C. Egypt. 22(3), 473-494.
Koltai, H. & Yoram, K. (2010). Arbuscular Mycorrhizas: Physiology and Function, second edition, Springer Science
Kraepiel, Y., Agnes, C. H., Tiery; L., Maldiney, R. Miginiac, E., & Delarue, M. (2001). The growth of tomato (Lycopersicon esculentum Mill.) hypocotyls in the light and in darkness differentially involves auxin. plant Sciences. 161: 1067-1074.
Moussa, T. N., Abdul-Jabbar, W. A., & asser, C. A. (2002). A study of some components of local Licorice, Glycyrrhiza glabra, Iraqi Journal of Agricultural Sciences.28-23:
Mukhtar, F. B. & Singh, B. B. (2006). Influence of photoperiod and gibberellic acid (GA3) on the growth and the flowering of cowpea (Vigna unguiculata (L.) Walp). Journal of Food, Agriculture and Environment, 4(2), 201-203.
Oliveira, A. P., Silva, O. P. R., Silva, J. A., Silva, D. F., Ferreira, D. T. A., & Pinheiro, S. M. G. (2014). Produtividade do quiabeiro adubado com esterco bovinoe NPK. Revista Brasileira de Engenharia,
Pierik, R., Diederik., K. H. Rashmi., S., & Tanja, D. (2009). Light quality controls shoot elongation through regulation of multiple hormones. Plant Signal. Behavior 4(8): 755-756.
Raveh, E., Cohen, S., Raz, T., Yakir, D., Grava, A., & Goldschmidt, E. E. (2003). Increased growth of young citrus trees under reduced radiation load in a semi-arid.
Rsoul, I. N. (1984). Production of Cut Flowers, Al-Risala Library Publications, Baghdad, Iraq, p. 192.
Sakakibara, H., Takei K. & Hirose, N. (2006). Interactions between nitrogen and cytokinin in the regulation of metabolism and development. Trends in plant science, 11(9), 440-448.
Shaheen, S. M. (2014). The production of cut flowers. Horticultural Research Institute - Agricultural Research Center.
Taiz, L. & Zeiger, E. (2002). Plant Physiology 3rd Edition, Sanauer Association Sunderland. Massachasetts, USA.
Tao,Y., Ferrer, J. L., jung, K. L. Pojer, F., Hong, F. X. & Long, J. A. (2008).Rapid synthesis of auxin via a new tryptophan –dependent pathway is required for shade avoidance in plants cell. 133: 164-176