Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2011.123.127AshrafSh. ManoukyanR. AyoubiSh. 22011142In this study, land suitability evaluation based on FAO guidelines on the land evaluation system has been determined for barley irrigated area of about 3400 ha in the south of plains Damghan. In order to have more reliable soil data, particularity to control the old soil map of the area, a new soil survey was carried out in the area. South soils of Damghan plain were classified based on semi detailed studies of three physiogrphy units, four map units and two order Aridisols and Entisols. Climatic Data were used from Damghan meteorological synoptic stations for climate evaluation for barley. With respect to climate and soil severe limitations in the study area, the results of map units as the assessment methods include the storie, square root and the number of simple constraints were the same as N2 with permanent unsuitable.]]>FAO,19761976FAO.,19851985Storie, R.E.,1976Sys, C., E. Vanranst and J. Debvay,1991Burrough, P.A.,19961996pp: 19-38pp: 19-38Rogwski, A.S. and J.K. Wolf,199458163174Zhu, A.X.,19991999Beckett, P.H.T. and R. Webster,197122466480Bouma, J., De Loat, P.J.M. van Holst and Th. J. van De Nes,19821982Breeuwsma, A., J.H.M. Wosten, J.J. Vleeshoumer, A.M. van Slobbe and J. Bouma,198650186190Jafarzadeh, A.A. and G. Abbasi,200661S349S352Shahbazi, F. and A.A. Jafarzadeh,2004146986Behzad, M., M. Albaji, P. Papan, S.B. Nasab, A.A. Naseri and A. Bavi,200982834Abdelkak, Y., M. Aghrod, N.A. Mohamed, E. Botte and Y. Briza et al.,20012001pp: 1148 Adel, A.A., A.S.A. Salami, A. Ouafae, B. Rigobert, D. Laura and G. Gebremeskel et al.,20072007pp: 1213Albaji, M., A.A. Naseri, P.P. Apan and S.B. Nasab,200915135145Salehi, M.H., M.K. Eghbal and H. Khademi,20031114556Assam, G.A.N., A. Barberis, V.M.F. Calderon, S. Chimenti and W. Feng et al.,20052005pp: 1141Chen, D., C. De Bari, S. De Santis, H. Deng and L.M. Di Lucchio et al.,20062006pp: 1153