References

Chizari, M., S. Karimi, R.J. Lindner and G. Pezeshki-Rad, 2003. Perception of soil conservation competencies among farmers in Markazi Province, Iran. J. Int. Agric. Extension Educ., 10: 13-19.

Cochran, W.G., 1977. Sampling Techniques. 3rd Edn., Wiley, New York.

Cramb, R., 2004. Social capital and soil conservation: Evidence from Philippines. Proceeding of 48th Annual Conference Australian Agricultural and Resource Economics Society, Feb. 11-13, Melbourne, Australia, pp: 1-26.

Cramb, R., D. Catacutan, Z. Culasero-Arellano and K. Mariano, 2006. Farm-level impacts of land care in Lantapan. Working Paper, No. 5. Philippines- Australia: Land Care Project. http://www.landcaremates.org/Portals/1/Documents/Working-papers/WP5-Impacts-lantapan.pdf.

Esilaba, A.O., J.B. Byalebeka, R.J. Delve, J.R. Okalebo, D. Ssenyange, M. Mbalule and H. Ssali, 2005. On farm testing of integrated nutrient management strategies in eastern Uganda. Agric. Syst., 86: 144-165.
CrossRef  |  

FAO, UNDP and UNEP, 1994. Land degradation in south Asia: Its severity, causes and effects upon the people. http://www.fao.org/docrep/V4360E/V4360E00.htm.

Goshchi, F., 2004. Planting Industrial Plant of Beet. Pelk Publication, Tehran.

Grossman, J.M., 2003. Exploring farmer knowledge of soil processes in organic coffee systems of Chiapas, Mexico. Geoderma, 111: 267-287.
Direct Link  |  

Karbasioun, M., M. Mulder and H. Biemans, 2006. The supporting roll of the agricultural extension organization as perceived by farmers in Esfihan, Iran. Proceedings of the AIAEE 22nd Annual Conference, May 14-19, Dublin, Ireland, pp: 310-320.

King, N.R. and J.T. Rollins, 1999. An evaluation of an agricultural innovation: Justification for participatory assistance. J. Extension, Vol. 37.

King, N.R., 1999. Identifying effective and efficient methods to educate farmers about soil sampling. J. Extension, Vol. 37.

Lal, R., 2003. Cropping Systems and Soil Quality. In: Cropping Systems: Trend and Advances, Shrestha, A. (Ed.). Food Products Press, New York, pp: 33-52.

Lapar, M.L. and S. Pandey, 1999. Adoption of soil conservation: The case of the Philippine uplands. Agric. Econ., 21: 241-256.
CrossRef  |  

Lipper, L. and D. Osgood, 2001. Two Essays on Socio-Economic Aspects of Soil Degradation. FAO, Rome, Italy.

Malakoti, M.J. and M.M. Tehrani, 1999. The Role of Micro Nutrients in Increasing the Quality of Agricultural Products, Micro Elements with Macro Influences. Tabiat Modarres University, Tehran.

Morgan, R.P.C., 1996. Soil Erosion and Conservation. 2nd Edn., Longman, London.

Mylavarapu, R.S., 2003. Role of an extension soil testing program in the development of best management practices: A Florida case study. J. Extension, Vol. 41.

Neufeld, J. and J. Davison, 2000. Practical considerations when selecting a soil testing laboratory for an educational program. J. Extension, Vol. 38.

Oldham, L.J., 2007. Understanding the different phosphorus indices in nutrient management planning. J. Extension, Vol. 45.

PRAEI, 2005. Distinguish of Existence Condition and Resources: Basic Logical Essay of Country Soil. Agriculture-Jihad Ministry, Tehran.

Parvizi, Y., 2005. Optimize farming management in sustainable exploit of soil and water resources. Zeyton, 158: 2-11.

Pilbeam, C.J., S.B. Mathema, P.J. Gregory and P.B. Shakya, 2005. Soil fertility management in the mid-hills of Nepal: Practices and perceptions. Agric. Hum. Values, 22: 243-258.
CrossRef  |  Direct Link  |  

Srivastava, Y.C. and A.P. Pandey, 1999. Knowledge and attitude of small and marginal farmers towards soil testing. Agric. Extension Rev., 11: 3-6.

Tadesse, M. and K. Belay, 2004. Factors influencing adoption of soil conservation measures in Southern Ethiopia: The case of Gununo area. J. Agric. Rural Dev. Trop. Subtrop., 105: 49-62.
Direct Link  |  

Tarawali, G., V.M. Manyong, R.J. Carsky, P.V. Vissoh, P. Osei-Bonsu and M. Galiba, 1999. Adoption of improved fallows in West Africa: Lessons from Mucina and stylo case studies. Agrofor. Syst., 47: 93-122.
Direct Link  |  

Triphati, R.P. and H.P. Singh, 2001. Soil Erosion and Conservation. New Age International Ltd., New Delhi, India.

Tucker, M. and T.L. Napier, 2002. Preferred sources and channels of soil and water conservation information among farmers in three Midwestern US watersheds. Agric. Ecosyst. Environ., 92: 297-313.

Wayessa, G.O., 2003. Prospects of integrated soil fertility management in Tullo District, Eastern Oromia, Ethiopia: Socio-economic and institutional challenges and opportunities. M.Sc. Thesis, Department of Management of Natural Resources and Sustainable Agriculture, Noragric University, Ethiopia.

Yadav, S.P.V., S.R. Raman and R. Kumar, 2006. Knowledge and attitude of farmers towards soil testing practices. Indian Res. J. Extension Educ., 6: 1-3.