[1] Abedi-Koupai, J. and Asadkazemi J. (2006). Effects of hydrophilic polymer on the field performance of an ornamental plant (Cupressus arizonica) under reduced irrigation regimes. Iran. Polym. Vol., 15, pp. 715- 725.
[2] Azzam, R.A.I. (1980). Tailoring polymeric gels for soil reclamation and hydroponics. Communications in Soil Science and Plant Analysis, vol. 16, no. 10, pp. 1123-1138.
[3] Choudhary M. I., Shalaby A. A. and Al-Omran A. M. (1995). Water holding capacity and evaporation of calcareous soils as affected by four synthetic polymers. Communications in Soil Science and Plant Analysis, vol. 66, pp. 350-355.
[3] Degariorgi, C. F. (2002). Hydrogels for immobilization of bacteria used treatment of metal contaminted wastes. Radiation Physics and Chemistry. 63:109-113.
[4] Elliott, L. F., Saxton., K.E. and Papendick. R.I. (1995). The effect of residue management and paratillage on soil water conservation and spring barley yields. Journal of Soil and Water Conservation. Vol. 50, no. 6, pp. 656-658.
[5] Esmaeilpour, Y. (2012). Investigation on the effect of Hydrogel applied and mycorrhiza inoculation on establishment of some rangeland species. Ph.D thesis, University of Tehran, 147pp.
[6] Ganjidust H. and Ayati B. (2005). Effect of natural polymers on the speed of seed production in UASB. Systems. Journal of Polymer Science and Technology, 18, No. 1, January – May.
[7] Geesing D. and Schmidhalter U. (2004). Influence of sodium polyacrylate on the water-holding capacity of three different soils and effects on growth of wheat. Soil Use and Management, vol. 20, pp. 207-209.
[8] Gupta S.C, Hooda K.S, Mathur N.K and Gupta S. (2009). Tailoring of guar gum for desert sand stablishment. Indian journal of chemical technology, vol. 16, pp. 507-512.
[9] Helalia, A. and Letey, J. (1988). Cationic polymer effects on infiltration rates with a rainfall simulator. Soil Science Society of America Journal, vol. 52, pp. 247-250.
[10] Jalili, Kh., Jalili, J. and Sohrabi, H. (2011). Influence of superabsorbent polymer and irrigation on the growth of almond trees. Journal of Soil and Water, vol. 21, no. 2, pp. 121-134.
[11] Johnson, M.S. (1984). Effect of soluble salts on water absorption by gel-forming soil conditioners. Journal of the Science of Food and Agriculture, vol. 35, pp. 1063-1066.
[12] Kouchaki, A. (1998). To farming and breeding in rainfed agriculture. Publications Jihad Mashhad University, 234p.
[13] Lee H., Fitzgerald, J., Daniel, B. H ., Rebecca, L. and McCulley, C. (2014). Soil moisture and soil-litter mixing effects on surface litter decomposition: A controlled environment assessment. Soil Biology & Biochemistry, vol. 72, pp. 123-132.
[14] Maghchiche, A., Haouam, A. and Immirzi, B. (2010). Use of polymers and biopolymers for water retaining and soil stabilization in arid and semiarid regions. JTUSCI, vo;. 4, pp. 9-16.
[15] Peterson, D. (2002). Hydrophilic polymers-Effect and uses in the landscape. Horticulture Science, 75.
Plumb, T. R. and Kraus, K. (1991). Oak woodland artificial regeneration correlating soil moisture to seedling survival. USDA Forest Service Gen. Tech. Rep. Psw- 126
[16] Rasolzadeh, A., Esmaeili ouri, A. and Homapour jorabji, M. (2009). Measurement and comparison of some physical properties of forest floor debris and it’s effects on water loss, Fourth National Conference on Modern Topics in Agriculture, Islamic Azad University, pp: 128-132.
[17] Ramezani Harandi M., Kabiri K., Zohorian M., Yusefi A and Ershadi A. (2005). A comparative study of free and under load swelling at super absorbent hydrogels return gridding density changes. Proceedings of the Tenth National Congress of Chemical Engineering, University of Sistan and Baluchestan, 5186-5191p.
[18] Ranger, J., Colin-Belyrand M. and Nys C. (1995). The biogeochemical cycle of major elements in forest ecosystems. Study Management Sds (Etude Gestion Sds), 2: 119-185.
[19] Richard A, F. (2004). Using soil amendments to improve riparian plant survival in arid and semi-arid landscape. ERDC TN-EMRRP-SR-44.
[20] Satish Vitthalrao Patil, B.K., Salunke., C.D. and Patil., R.B. (2010). Salunkhe. Studies on Amendment of Different Biopolymers in Sandy Loam and Their Effect on Germination, Seedling Growth of Gossypium herbaceum L. Appl Biochem Biotechnol, vol. 163, pp.780-791.
[21] Taban, M. and Movahedi Naeini, S.A. R. (2006). Effect of aquasorb and organic compost amendments on soil water retention and evaporation whit different evaporation potentials and soil textures. Communications in Soil Science and Plant Analysis, vol. 37, pp. 2031-2055.
[22] Teyel, M.Y. and EL-Hady, O.A. (1981). Super gel as a soil conditioner. Acta Horticulturae, vol. 119, pp. 247-250.
[23] Throop, H.L. and Archer, S.R. (2007). Interrelationships among shrub encroachment, land management, and litter decomposition in a semidesert grassland. Ecological Applications, vol. 17, pp. 1809-1823.
[24] Throop, H.L. and Archer, S.R. (2008). Shrub (Prosopis velutina) encroachment in a semidesert grassland: spatial-temporal changes in soil organic carbon and nitrogen pools. Global Change Biology, vol. 14, pp. 2420-2431.
[29] Throop, H.L. and Archer, S.R. (2009). Resolving the dryland decomposition conundrum: some new perspectives on potential drivers. Progress in Botany, vol. 70, pp. 171-194.
[30] Wang, Y. and Boogher, C.A. (1987). Effect of medium-incorporated hydrogel on plant growth and water use of two foliage species. Journal of Environmental Horticulture, vol. 5, pp. 125-127.
[31] Vilagrosa A & Chirino E. (2011). Using hydrogel and clay to improve the water status of seedlings for dryland restoration. Plant Soil : 344:99–110.
[32] Zhang, C. and Sun. P. (2007), Effects of straw mulching on soil temperature, evaporation and yield of winter wheat: field experiments on the North China Plain. Annals of Applied Biology, Vol. 150, No. 3, pp. 261-268.