biofertilizers

Shehata, S. A., A. A. Hassan, A. A. Tawfik, and M. F. Farag, "Influence of commercial biofertilizers; organic manure, nitrogen and phosphorus minerals fertilizer on growth and yield of potato (Solanum tuberosum, L.)", .). Annals of Agric. Sci. Moshtohor,, vol. 3, issue 44, pp. 1095-1113., 2006.
Shehata, S. A., S. E. S. Mustafa, and A. Tantawy, ". Effect of some biofertilizers on growth characters and nutritional status of tomato plants", First confeerence of role of Biochemistry in Environment and Agriculture, Biochemistry Dept. of Agric. Cairp Univ. Giza, Egypt., February 6 -8 : , 2001.