A. Refereed Journals:
1. Ayed I.A. Habish H.A. and El Mahi Y.E. (1968). A study of nitrification in some Shambat Soils. Sudan Agric. J. 3:28-34.
2. El Mahi, Y.E. and Mustafa, M.A. (1980). The effects of electrolyte concentration and sodium adsorption ration on phosphate retention by soils. Soil Sci. 130:321-325.
3. Abdel Magid, H.M., El Mahi, Y.E. and Gamar, Y. (1983). Potential of urease inhibitors in reducing ammonia losses in some tropical soils. Trop. Agric. 60-301-302.
4. Gaafar, M.O. and El Mahi, (1994). A study of carbon to nitrogen ratio in some Arid-zone soils. Accepted for publication (letter attached) in the Sudan Agric. Journal.
5. Abdel Magid, H.M. and El Mahi Y.E. (1986). The in vitro effect of urease inhibitors on rate of urea hydrolysis in soils, Fertilizer Research, 8(3): 203-212.
6. El Mahi, Y.E. Saeed, I. Abdel Magid, H.M. and El Tilib A.M.A. (1987). A simple method for the estimation of calcium and magnesium carbonates in soils. Soil Sci. Amer, J. 51:1152-1155.
7. Buraymah, J.M., El Mahi Y.E. and Ibrahim I.S. (1992). Long term irrigation effect on soil variation in Central Gezira. The Sudanese Soil Sci. Journal 1:27-36.
8. El Tilib A.M.A., El Mahi, Y.E. Abdel Magid, H.M. and Ahmed B.A.M. (1995). Response of wheat to irrigation frequency and manuring in a salt-affected semi-arid environment. Journal of Arid Environ. 31:115-125.
9. Awad El Karim A.H., El Mahi Y.E. and El Tilib A.M.A. (1995). Effect of soil salinity and sodicity on urea hydrolysis in three soil orders. U.K.J. Agric. Sci. 3(1):60-76.
10. Hamad, Y.A., El Doumi, F.M. and El Mahi, Y.E. (1997). The effects of the composition and concentration of equilibrium solution on the nature and extent of phosphate adsorption by soils. Much. J. Sci. 4:143-164.
11. Hamad, Y.A., El Mahi, Y.E. and El Doumi, F.M. (1996). The nature of the native and fate of applied P in two soils differing in carbonate and clay contents. Mukh. J. Sci. 3:164-182.
12. Faiture, M.Y., El-Hussan J.A. and El Mahi, Y.E. (1996). Effect of salinity and sodicity on bacterial-plant symbiotic relationship. Much. J. Sci. 3:112-128.
13. El Mahi, Y.E. Hussein, E.A., El-Amin, E.A. and Ibrahim, I.S. (2000). Salinity and Sodicity effects on boron retention by three arid zone soils. Comm.. Soil. Sci. Plant Anal. 30:2107-2209.
14. Abu Ras, M.M., El Mahi, Y.E. and El Doumi F.M. (2000). Quantifying soil less by rain at Al-Hamama area, north east of Libya. University of Khartoum, J. Agric. Sci. 8:1-15.
15. El Amin, E.A., Hussein, A.A. and El Mahi, Y.E. (2000). Influence of induced salinity and sodicity on manganese sorption in Vertisols and Aridisols. Comm.. Soil. Sci. Plant Anal. 31:455-463.
16. Abu Ras M.M., El Mahi, Y.E. and El Doumi F.M. (2001). Effects of land use on soil erosion by rain and on the loss of some soil constituents in Al Jabal Alakhdar, Libya, U. of K. J. Agric. Sci. 9:201-217.
17. Faituri M.Y., El Mahi, Y.E. and El Hassan, G.A. (2001). Effects of some salts and sodicity on the growth of a Rhizobium leguminosarum b.v. viceae strain isolated from a salt-affected soil. Can. J. Microbiol. 47:807-812.
18. Hussein A.A., El Amin, E.S., and El Mahi, Y.E. (2002). Zinc sorption in two Vertisols and one Aridisol series as affected by electrolyte concentration and sodium adsorption ratio. U. of K. J. Agric. Sci. 10:14-25.
19. El Mahi Y.E., Sokrab, A.M.A., El Amin E.A., and Ibrahim, I.S. (2002). Phosphorus and potassium fertilizers effect on growth and yield of irrigated forage sorghum, (Sorghum bicolour L. Moench) grown on a saline sodic soil. Crop Res. 23(2):235-242.
20. El Mahi, Y.E., Ahmed, A.A.M., El Amin E.A. and Ibrahim, I.S. (2002). Influence of interaction between the rates of phosphorus application and temperature on phosphorus sorption. Annals of Arid Zone 40(1):35-42.
21. El Mahi Y.E. et. Al. (2004). Influence of soil type salinity and sodicity on ammonia volatilization in soils fertilized with urea. Annals Agric. Sci. 49:401-411.
22. El Mahi, Y.E. et. al. (2005). Effect of calcium carbonate on urea nitrogen transformation in soil Columns. U. of K. J. Agric. Sci. 14:370-382.
23. El Mahi, Y.E. et. al. (2005). Combined effects on nitrogen fertilization and soil of CaCO3 contents on corn performance in Al-Marj soil, Libya. J. Of Plant Nutrition, 28:1619-1632.
24. El Mahi, Y.E., et. al. (2006). Chemical composition and the Agrochemical potential of two types of rock phosphates in Sudan. Met., Eng. and Arid Lar Agric. Sci. 17(1)3-13.
25. El Mahi, Y.E. et. al. (2007). Effect of nitrogen fertilization and CaCO3 on soil N, P, K, Ca and Mg. U. of K. J. Agric. Sci. 15(2):259-272.