Behnia, M.R., and M. Mokhtari. 2009. Effect of planting methods and corm density in saffron (Crocus sativus L.). 3rd International Symposium on Saffron. Forthcoming Challenges in Cultivation, Research and Economics. 20-23 May, Korokos, Kozani, Greece. p. 15.
Breswster, J.L. 1994. Onion and other vegetable Alliums.CAB Int., Wallingford, UK.
Bremner, J.M., and C.S. Mulvaney. 1982. Methods of Soil Analysis, part 2 chemical and microbiological properties. 595-624.
De costa, W.A.J.M. 2000. Principales of crop physiology: towards an understanding of crop yield determination and improvement. Plant Growth Analysis. University of Peradeniya Press, Srilanka. Pp: 13-92.
El-Rehim, G.H.A. 2000. Effect of phosphorus fertilization on yield and quality of onion bulb under Egypt condition. Assiut Journal of Agricultural Sciences. 31: 115-121.
Farooqui, M.A., I.S. Naruka, S.S. Rathore, P.P. Singh, and R.P.S. Shaktawat. 2009. Effect of nitrogen and sulphur levels on growth and yield of garlic (Allium sativum L.). Asian Journal of Food and Agro-Industry Special Issue, S 18-23.
Gee, G.W., and J.W. Bauder. 1979. Partcle size analysis. In: klute, A.(Eds), Methods of soil Analysis Part 1: physical and Mineralogical Methods. 2nd Ed. Agronomy Monogr. ASA and SSSA, Madison, WI pp. 383-411.
Havey, M.J. 1999. Advances in new Allium. P. 374-378. In: J. Janick (ed.), Perspectives on new crops and new uses. ASHS Press, Alexandria, VA.
Hunt, R. 2003. Growth analysis, individual plants, Thomas, D.J. Murphy and D. Murryeds. Encylopaedia of applied plant science. Academic Press, Londan.
James J.J., and R.E. Drenovsky. 2007. A basis for relative growth rate difference between native and ilnavasivefoorb seedlings. Rangland Ecological Management. 60: 395-400.
Kafi, M., S. Rezvani Bidokhti, and S. Sanjabi. 2011. The effect of planting date and plant density on yield and physiological traits on shallot (Allium altissimum Regel) in Mashhad weather conditions. Journal of Horticultural Science. 25(3): 310-319. (In Persian).
Kheirkhah, M., and A. Dadkhah.2009. Study of Allium altissimum Regel. phenology and consider how to domesticating it. Journal of Horticulture Researches in Pajouhesh & Sazandegi. 82: 19-24. (In Persian).
Koller, H.R., W.E. Nyguist, and I.S. Chrouch. 1980. Growth analysis of the soybean community. Crop Science. 20: 407-413.
Koocheki, A., A. Siahmarguee, G. Azizi, M. Jahani, and L. Alimoradi. 2009a.The effect of plant density and depth on agronomic characteristic of saffron (Crocus sativus L.). 3rd International Symposium on Saffron. Forthcoming Challenges in Cultivation, Research and Economics. 20-23 May, Korokos, Kozani, Greece.
Koocheki, A., L. Tabrizi, M. Jahani, A.A. Mohammad- Abadi, and A. Mahdavi Damghani. 2009b. Performance of saffron (Crocus sativus L.) under different planting patterns and high corm density.3rd International Symposium on Saffron. Forthcoming Challenges in Cultivation, Research and Economics. 20-23 May, Korokos, Kozani, Greece.
Lundy, M., D. Spencer, C.H. Kessel, J. Hill, and B. Linquist. 2012. Managing phosphorus fertilizer to reduce algae, maintains water quality, and sustains yields in water-seeded rice. Original Research Article. Field Crops Research. 131(13): 81-87.
Marschner, H. 1995. Mineral nutrition of higher plants. 2nd Ed. Academic Press, Londen.
Ojala, J.C,. W.M, Jareell, J.A. Menge, and E.L.V. Johnson. 1983. Influence of mycorrhizal fungi on the mineral and yield of onion in saline soil. Agronomy Journal. 75: 255-259.
Olsen, S.R., C.V. Cole, F.S. Watanabe, and L.A. Dean. 1954. Estimation of available phosphorous in soils by extraction with sodium bicarbonate; U.S. Department of Agriculture: Washington, D.C., USDA Circ. 939.
Poorter, H., and C. Remkes C. 1990. Leaf area ratio and net assimilation rate of 24 wild species differenting in relative growth rate. Oecologia. 83: 553-559.
Qupta, P.K. 2000. Soil, plant, water and fertilizer analysis. Agrobios, India.
Tandom, H.L.S. 1995. Methods of analysis of soils, plants, water and fertiliser. New Dehli, India.
Vachhani, M.U., and Z.G. Patel. 1993. Growth and yield of onion (Allium cepa. L.) as influenced by levels of nitrogen, phosphorus and potash under South Gujarat conditionc. Progressive Horticulture. 25 (3):166-167.
Wissuwa ,M,. G. Gamat, and A.M. Ismail. 2005. Is root growth under phosphorus deficiencyaffected by source or sink limitataoin. Journal of Experimental Botany. 56: 1943-1950.
