Adesina, A. A., &Zinnah, M. M. (1993). Technology characteristics, farmers' perceptions and adoption decisions: A TobitModel application in Sierra Leone. Agricultural Economics, 9(4), 297-311.
Abyar, N.)2002(. A study of factors influencing soy bean area expansion in GolestanProvince. Journal of Agricultural Economics and Development, 10(38), 67-82.
Amao, J. O.,&Awoyemi, T. T. (2008). Adoption of improved cassava varieties and its welfare effect on producing households in OsogboAdp zone of OsunState. Gene Conserve, 7(29), 1-11
Ben-Houassa, K. E. (2011). Adoption and levels of demand of fertilizer in cocoa farming in Cote D’ivoire: does risk aversion matters? Paper selected for presentation at the CSAE conference, economic development in Africa.
Caviglia, J. L., & Khan, J. R. (2001). Diffusion of sustainable agriculture in the Brazilian tropical rain forests: a discrete choice analysis. Economic Development and Cultural Change, 49(2), 311-333.
East Azerbaijan Province Organization of Jihad- Agriculture. (2010). Agricultural Statistics Year Book, Department of Planning and Economics, Tabriz, Iran.
Foster, A. D., &Rosenzweig, M. R. (1995). Learning by doing and learning from others: human capital and technical change in agriculture. Journal of Political Economy, 103(6), 1176-1209.
Gebremedhin, B., Ahmed, M.,& Ehui, S. K. (2003). Determinants of adoption of improved forage technologies in crop-livestock mixed systems: evidence from the highlands of Ethiopia. Tropical Grasslands, 37, 262-273.
Greene, W. H. (1990). Econometric analysis (2ndEds). New York: Macmillan publishing company, USA.
Heckman, J. J. (1979). Sample selection bias as a spesification error. Econometrica, 47(1), 153- 161.
Ibrahim, M., Florkowski, W. J.,& Kolavalli, S. (2012). The determinants of farmer adoption of improved peanut varieties and their impact on farm income: evidence from Northern Ghana. Selected peper prepared for presentation at the agricultural and applied economics association annual meeting, Seattle,WA.
Kheil, A., Saint-Macary, C.,& Zeller, M. (2009). Maize boom in the uplands of northern Vietnam, economic importance and environmental implication. In: International research on food security, natural resource management and rural development conference, PP. 1-6.
Kinuthia, E. K., Owuor, G., Nguyo, W., Kalio, A. M.,& Kinambuga, D. (2011). Factors influencing participation and acreage allocation in tree planting program: a case of Nyeri district, Kenya. Agricultural Science Research Journal,1(6), 129-133.
Lohr, L., & Park, T.A. (1995). Utility-consistent discrete continuous choices in soil conservation. Land Economics, 71(4), 474-490.
Lubell, M. (2004). Collaborative watershed management: a view from the grassroots. Policy Studies Journal, 32(3), 341-361.
Mostofi, S. (2008). Investigation of oilseed and its products. Agricultural Planning, Economic and Rural Development Research Institute Tehran,1-50.
Munshi, K. (2004). Social learning in a heterogeneous population: technology diffusion in the Indian Green Revolution. Journal of Development Economics, 73(1), 185-213.
McDonald, J.,&Moffit, R. (1982). The uses of Tobit analysis.The Review of Economics and Statistics, 62(2), 318-321.
Ngwira, A., Johnsen, F. H., Aune, J. B., Mekuria, M.,&Thierfelder, C. (2014).Adoption and extent of conservation agriculture practices among smallholder farmers in Malawi. Journal of Soil and Water Conservation, 69(2), 107-119.
Oladele, O. I. (2005). A Tobit analysis of propensity to discontinue adoption of agricultural technology among farmers in southwestern Nigeria. Journal of Central European Agriculture, 6(3), 249-254.
Oyekale, A. S. &Idjesa, E. (2009). Adoption of improved maize seeds and production efficiency in Rivers state, Nigeria. Academic Journal of Plant Sciences, 2(1), 44-50.
Rogers, E. (1962). Diffusion of innovation (5thEds). New York: Free Press.
Salami, H.,&Einallahi Ahmad Abadi, M. (2001). Application of Tobit econometric model and the two-stage Heckman method in determining factors affecting sugar beet production in Khorasan province. Iranian Agricultural Sciences, 32(2), 433-445.
Scandizzo, P. L.,&Savastano, S. (2010). The adoption and diffusion of GM crops in United States: a real option approach. AgBio Forum, 13(2), 142-157.
Shafiei, L. (2007). Studying effective factors on olive cultivation in Kerman. Journal of Agricultural Economics and Development, 15(58), 1-22.
Shapiro, B. I., Brorsen, B. W. & Doster, D. H. (1992). Adoption of double-cropping soybeans and wheat. Southern Journal of Agricultural Economics, 24(02), 33-40.
Sigleman, L. & Zeng, L. (1999). Analysing censored and sample selected data with tobit and Heckit models. Political Analysis, 8(2), 167-82.
Taheri, F., Mousavi, S. N.,&Rezayie, M. R. (2010). The impact of removing energy subsidies on rapeseed production costs in MarvdashtCounty. Journal of Agricultural Economics Research, 2(3), 77-89.
Tobin, J. (1958). Estimation of relationships for limited dependent variables. Econometrica, 26(1), 24-36.
Wright, M., &Charlert, D. (1995). New product diffusion models in marketing: an assessment of two approaches. Marketing Bulletin, 6(4), 32-41.
Youssefi, A., Nshauian, A.,&Azizi, M. (2010). Yield differences of brassica oilseed rape cultivars based on physiological parameters. American-Eurasian Journal of Agricultural & Environmental Sciences, 9(4), 436-439