Journal papers
Warrag, M. O. and Warrag, E.I. 2011.Phytotoxic Impact of Mesquite (Prosopis juliflora) Pericarps on Seed Germination and Seedling Growth of Lettuce (Lactuca sativa). U. of k . J. Agric. Sci. 19(1), 100-113.
Abdelkheir, R.M, Hamza, N.B., Khalil1, A.K. and Warrag, EI. 2011. Genetic variation within and among five natural populations of endangered Sclerocarya birrea (A. Rich) subsp. Birrea in Sudan. African Journal of Biotechnology 10(28), pp. 5452-5460
Altayeb, G.S and Warrag, E.I. (accepted). In Vitro Micropropagation of Mature Trees of Acacia seyal var seyal using single node explants. Journal of Sudan Journal of Basic Sciences. Series B: Biological Science.
Elfeel, A.A., Warrag, E.I. (accepted). Genetic conservation status of Balanites aegyptiaca in Sudan. Journal of Social Forestry
Elgorashi EE, Wada N, Warrag E, Satoh H. 2009. Effect of Acacia species on adjuvant-induced arthritis in rats. Journal of Natural Remedies 9(2) 185-191.
Elfeel, A.A., Warrag, E.I. and Musnad, H.A. 2009. Effect of seed origin and soil type on germination and seedling growth of of Balanites aegyptiaca var aegyptiaca. Journal of Science and Technology 3-13.
Osman, A. S., and Warrag, E.I. 2009. Assessment of Vegetation Cover Change with Special Reference to Acacia senegal in Bara Locality, North Kordofan, Sudan. Sudan Journal of Desertification Research 1(1):145-154
Essam-Eldin I. Warrag – Vitae – Page 4
Journal papers (conti)
Abu Elgasim, Z.H., Abu Elreish, B.I. and Warrag, E.I. 2008. A note on variation in growth of red and green bark seedlings of Acacia seyal var seyal. U of K J.Agric. Sc. 16(2),213-218.
Warrag, M. O. A. and Warrag, E. I. 2007. Effect of Some Mechanical and Chemical Treatments on Seed Germination of Date Palm (Phoenix dactylifera L.). U of K J.Agric. Sc. 15(3),407-417.
Abdel Gabar, S. A. and Warrag, E.I. 2007.Variation in Seed Parameters and Germination of Acacia senegal var. senegalamong and within Natural Populations from Clay Soils of Sudan. Sudan Silva 13 (1): 36-46.
Elfeel, A.A., Warrag, E.I. and Musnad, H.A. 2007.Response of Balanites Aegyptiaca (L) Del. Seedlings from Varied Geographical Sources to Imposed Drought Stress. Discovery and Innovation Journal 19(4).
Babikir, L.M and Warrag, E.I. 2006. Karyotype analysis of Acacia senegal var.senegal from natural populations in Kordofan State- Sudan. U of K J.Agric. Sc. 14(3),403-414.
Elfeel, A.A., and Warrag, E.I. 2006. Variation in morphological and chemical characteristics of fruits and seeds among eleven geographical sources of Balanites Aegyptiaca (L) Del. Sudan Silva 12 (1): 29-40
Warrag, E.I. and Eltigani, M.A. 2005.Breaking seed coat dormancy of Acacia nilotica seeds under simulated natural habitat conditions in Sudan. Tropical Ecolgy 46(1), 127-132.
Ahmed, K.H. and Warrag, E.I. 2005. Sudan vegetation cover assessment, using NOAA-AVHRR data,for the period between “1982-1999”. Sudan Silva 11 (1): 20-33.
Elfeel, A.A., and Warrag, E.I. 2004. Geographic source variation in seedling growth and nodulation of Acacia senegal var senegal. Sudan Silva 10 (1): 18-31.
Elfeel, A.A., and Warrag, E.I. 2004. Genetic variation in seed characteristics and germination rate of Acacia senegal. Journal of Science and Technology. 1: 34-45.
Abdel-Rahman, H.M., Warrag, E.I and Ballal, M, E. 2003. Effects of tree age and shoot morphology of Acacia senegal on gum yield in North Kordofan State. Sudan Silva 9(2):56-66.
Ahmed, M.T. and E.I. Warrag. 2003. Effect of stem size and defoliation of donor plant on rooting and field survival of propagules of five Morus species (Mulberry).
Warrag, E.I., Elsheik, E.A. & Elfeel, A.A., 2002. Forest genetic resources conservation in Sudan. Forest Genetic Resources. FAO. No 30: 48-51.
Michelozzi, M., Johnson, J.D. and Warrag, E.I.1995. Response of ethylene and chlorophyll in two eucalyptus clones during drought . New Forests 9(3) 197-204.
Essam-Eldin I. Warrag – Vitae – Page 5
Journal papers (conti)
Rockwood, D.L., E.I. Warrag. 1994. Field performance of micropropagated, and seed- derived propagules of three Eucalyptus grand is ortets. Plant Cell Reports, 13: 628 -631.
Warrag, E.I., M.S. Lesney, D.L. Rockwood. 1991.Nodule culture and regeneration of Eucalyptus grandis hybrids. Plant Cell Reports. 9(10):586-589.
Warrag, E.I., M.S. Lesney, D.L. Rockwood. 1990. Micropropagation of field tested superior Eucalyptus grandis hybrids. New Forests. 4(2):67-79.
Warrag, E.I., M.S. Lesney, D.L. Rockwood. 1990. Comparative greenhouse study of Eucalyptus grandis in vitro plantlets and half-sib seedlings. I. Net Photosynthesis. Plant Cell Reports, 8(8) 407 -409.
Warrag, E.I., M.S. Lesney, D.L. Rockwood. 1990. Comparative greenhouse study of Eucalyptus grandis in vitro plantlets and half-sib seedlings. II. Dry matter accumulation and relative distribution. Plant Cell Reports, 8(8) 500-503.
Rockwood, D.L., K.V. Reddy, E.I. Warrag, and C.W. comer, 1987. Development of Eucalyptus amplifolia for woody biomass production. Australian Forest Research, 17(2):173-178.
Papers in proceedings
Abdulhamied, A.H and Warrag, E., 2007. Conservation of forest genetic resources in Sudan. Wad-medani, Sudan, March 2007.
Warrag, E.I. 2005. Role of protected areas in conservation of forest genetic resources in the Arab World. Khartoum, Sudan Sept. 2005.
Warrag, E.I and Mohamed Ahmed, H.K. 2003. Status of Plant Tissue Culture in Sudan. Workshop of status of plant tissue culture in the Arab World. El Ain – United Arab emirates. Jan 14-16, 2003
Warrag E.I 2001: Factors affecting gum Arabic yield of Acacia senegal in Kenana Site. Workshop on the yield of Acacia senegal in kenana site . July 22-25, 2001.
Warrag E.I, and M. A. Eltigani 2001: Breaking of Acacia nilotica seed coat dormancy by extended soaking in water (Mimicking the natural habitat). IUFRO Symposium on tropical silviculture and tree seed technology. Philipines.
Warrag, E.I, A.G. Elmahi, A. M. Ibrahim, E.A. Elsheiksh 1998: Status of forest genetic resources in the Sudan. Country paper for the sub-regional workshop on the conservation, management, utilization and enhancement of forest genetic resources 16-27 March, 1998. Ouagadougou, Burkina Faso.
Warrag, E.I., V. Ortega, M.S. Lesney, D.L. Rockwood. 1988. Recent progress in tissue culture of Eucalyptus species and implication for genetic improvement. In: proceeding of the 9th Southern Forest Biomass Workshop. Biloxi, Mississippi. pp 71-80
Essam-Eldin I. Warrag – Vitae – Page 6
Rockwood, D.L., E.I. Warrag, K. Javenshir, and K. Kratz, 1989. Genetic Improvement of Eucalyptus grandis for southern Florida. Proceedings Of the 20th Southern Forest Tree Improvement Conference, June 27-29, Charleston, South Carolina, USA. pp 403-410.
Rockwood, D.L., E.I. Warrag, J. Bryan, and K. Kratz, 1989. Recent advances in the development of Eucalyptus grandis for commercial planting for South Florida. In Proceeding 5th Biennial Southern Silvicultural Research Conference. November 1-3, 1988, Memphis, Tennessee, USA. pp. 317-326.
Technical publications
Warrag, E.I and Abdelgadir, A.Y. 2004. Production and management of gum arabic. Technical report for the FAO, 35 pages.
Warrag, et al. 1992. Economic feasibility study for the state forests development of Zimbabwe.
Warrag E.I and Gadalla, I. 1991. State of forestry in the Arab World. A study for the Arab Organization for Agricultural Development, League of Arab States
Chapter in a book
Mukhtar, M.E., Warrag, E.I. 1994. Some aspects of traditional forest utilization in the Sudan. pp 129- in Indigenous knowledge for sustainable development in the Sudan (editor Medani. M.M. Ahmed). Published by Institute of African and Asian studies, University of Khartoum Press, Sudan.
Poster
Elobeid, M., Warrag, I. and Khalil, A. Comparative studies on the effect of soil drying treatment on some physiological and growth parameters of E. citriodora and E. camaldulenesis seedlings. Tropentag, October 7-9, 2008. Hohenheim, Germany
