Prof. Donatus Felix Uwah is a Professor of Crop Science specializing in Horticulture in the Faculty of Agriculture, University of Calabar. He holds a B.Sc. Agriculture (Agronomy) degree, University of Calabar (1986); M.Sc. Agronomy (Crop Production) degree, University of Ibadan (1989) and a Ph.D from Ahmadu Bello University, Zaria (2001). He has been Sub-dean of Agriculture (2002-2004) and Head of Department of Crop Science, University of Calabar (2004-2006). He has served and still serving in many committees/panels in the University. Some of which include: Chairman, Faculty of Agriculture Examination Mal-practice committee; member, Faculty of Agriculture Journal committee, member, University of Calabar Students’ certificate screening panel; Chairman, Senate examination result vetting committee in the Department of Microbiology and Team Leader – cassava stem cutting multiplication project sponsored by West Africa Agricultural Productivity Programme (WAAPP – NIGERIA). His on-going researches are on: (i) Vegetative propagation of Gnetum africanum using different growth media. (ii) Screening sweet potato varieties for possible inclusion in the cropping systems of Cross River State. (iii) Determination of suitable planting dates for different varieties of watermelon in Cross River State. He has successfully supervised 3 Ph.Ds, 3 M.Scs, several PGDs and undergraduate projects.
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David, G. S., Uwah, D. F., Effa, E. B., & Effiong, H. E. (2017). Genetic variability and heritability among selected genotypes of sweet potato (Ipomoea batatas (L) Lam) in Calabar. In: proceedings of the 4th National Annual Conference of Crop Science Society of Nigeria (CSSN), “UYO, 2017â€, September 10-14, pp 573-580.
Uwah, D. F., & David, G. S. (2017). Evaluation of five elite cassava (Manihot esculenta Crantz) varieties for stem and tuber yields selection in Calabar. In: Proceedings of the 4th National Annual Conference of Crop Science Society of Nigeria (CSSN), “UYO, 2017â€, September 10-14, pp 248-253.
Uwah, D. F., Effa, E. B., & Abam, P. O. (2016). Growth and yield response of maize (Zea mays L.) varieties to poultry manure in Calabar, Nigeria. European Jour. of Natural and Appl. Sci., 4(1), 1 -8.
Uwah, D. F., Obok, E. E., & Atim, E. S. (2016). Growth and edible leaf yield of fluted pumpkin (Telfairia occidentalis Hook F.) in response to poultry manure and NPK fertilizer in Calabar. In: proceedings of the 3rd National Annual Conference of Crop Science Society of Nigeria (CSSN), “NSUKKA, 2016â€, September 27-30th, pp 519-525.
Uwah, D. F., Ukoha, G. O., & Akpabio, I. I. (2016). Effect of goat manure and urea fertilizer on the performance of garden egg (Solanum gilo Raddi.) in Calabar. In: Proceedings 3rd National Annual Conference of Crop Science Society of Nigeria (CSSN), “NSUKKA, 2016â€, September 27-30th, pp 526-530.
Undie, U. L., Uwah D. F., Shiyam, J. O., & Effa, E. E. (2015). Nutrient status and ameliorating effects of poultry droppings on soil pH and sustainable production of garden egg. Jour. of Agric. & Sustainability 7(2), 128-142.
Uwah, D. F., & Ogbonna, C. C. (2015). Influence of pig manure on soil properties, growth and yield of two varieties of okra (Abelmoschus esculentus (L.) Moench). European Jour. of Natural and Appl. Sci. 3(1), 20 -30.
Uwah, D. F. Undie, U. L., & John, N. M. (2014). Comparative evaluation of animal manures on soil properties growth and yield of sweet maize (Zea mays L. saccharata Strut) Tropical Agric, 91(4), 220-234.
Uwah, D. F., & Eyo, V. E. (2014). Response of sweet maize (Zea mays saccharata Strut) to number and rates of goat manure application in Calabar. In: Proceedings of the 2nd National Annual Conference of Crop Science Society of Nigeria (CSSN), “NSUKKA, 2017â€, September 21-25th, pp 120-125.
Uwah, D. F. Ogar, C. C., & Akpan, R. J. (2014). Effects of poultry manure and plant population on soil properties and agronomic performance of sweet maize (Zea mays L. saccharata Strut) International Journal of Appl. Sci., & Tech. 4(4), 190-201.
Uwah, D. F., & Eyo, V. E. (2014). Effects of number and rate of goat manure application on soil properties, growth and yield of sweet maize (Zea mays L. saccharata Strut) Sustainable Agric. Res, 3(4), 75-83.
Effa, E. B., Uwah, D. F., & Undie, U. L. (2014). Popping volume expansion and nutrition composition of rain-fed popcorn under liming and N fertilization. International Jour. of Appl. Res., & Tech. 3(10), 16-23.
Uwah, D. F., Effa, E. B., Ekpenyong, L. E., & Akpan, I. E. (2013). Cassava (Manihot esculenta crantz) performance as influenced by nitrogen and potassium fertilizers in Uyo, Nigeria. Journal of Animal & Plant Sciences, 23(2), 550-555.
Uwah, D. F., Undie, U. L., John, N. M., & Ukoha, G. O. (2013). Growth and yield response of improved sweet potato (Ipomoea batatas (L.) Lam) varieties to different rates of potassium fertilizer in Calabar, Nigeria. Journal of Agricultural Science, 5(7), 61-69.
Uwah, D. F., Ogar, C. C., & Effa, E. B. (2013). Tillage method and N Effects on growth and yield of fluted pumpkin (Telfairia occidentalis F. Hook) in Calabar Cross River State, Nigeria. Int’l J. Applied Res. & Technology, 2(5), 83-91.
Uwah, D. F., & Okopedeghe, U. E. (2013). Effects of row-spacing and NPK fertilizer on agronomic performance of sweet maize (Zea may L. Saccaharata Strut). In: proceedings of the 1st National Annual Conference of Crop Science Society of Nigeria, Nsukka, September, pp142-148.
Uwah, D. F., & Ogbonna, C. C. (2013). The effects of pig manure rates on the performance of two okra (Abelmoschus esculentus (L.) Moench) varieties in Calabar. In: Proceedings of the 47th National Annual Conference of the Agricultural Society of Nigeria, Fed. College of Ani., & Health Prod. Tech. Moor Plantation “Ibadan 2013â€, November 4-8, 2013, pp 272-276.
Uwah, D. F., Ukoha, G. O., & Iyango, J. O. (2012). Okra performance, soil and water conservation as influenced by poultry manure and organic mulch amendments. Journal of Food, Agriculture and Environment, 10(1), 748-754.
Uwah, D. F., Ukoha, G. O., Akpabio, I. I., & Inyang, I. O. (2012). Response of garden egg (Solanum gilo Raddi) to farm yard manure and inorganic fertilizer. J. Sci. Engr. Tech. 19(1),10523-10532.
Effa, E. B., Uwah, D. F., Iwo, G. A., Obok, E. E., & Ukoha, G. O. (2012). Yield performance of popcorn (Zea mays L. Everta) under lime and nitrogen fertilization on an acid soil. Journal of Agricultural Science, 4(10),12-19.
Iwo, G. A., Ufot, E. U., and Uwah, D. F. (2012). Selection criteria for stem and tuber yields in cassava (Manihot esculenta crantz). Journal of American Science, 8(12), 1120-1124.
Undie, U. L., Uwah, D. F., & Attoe, E. E. (2012). Effect of intercropping and crop arrangement on yield and productivity of late season maize/soybean mixture in the humid environment of South Southern Nigeria. J. Agricultural Science. 4(4), 37-50.
Undie, U. L., Uwah, D. F., & Attoe, E. E. (2012). Growth and development of late season maize/soybean intercropping in response to nitrogen and crop arrangement in the forest agro-ecology of South Southern Nigeria. Int’l J. Agric. Res., 1-16.
Uwah, D. F., Ogar, C. C., & Effa, E. B. (2012). Response of sweet maize (Zea mays L. saccharata) to poultry manure and row spacing in Uyo, Akwa Ibom State, Nigeria. In: Proceedings of the 8th Annual Conference of Organic Agriculture (OAPTIN), “UNICALORGANIC 2012â€, University of Calabar, Nigeria, November 5-9, 2012, pp 1-5.
Uwah, D. F., Effa, E. B., & Ephraim, l. E. (2011). Productivity of maize/soybean mixture as influenced by crop arrangement in the humid environment of south eastern Nigeria. Journal of Applied Sciences 14(2),9863-9880.
Effa, E. B., Uwah, D. F., & Iwara, E. B. (2011). Evaluation of some upland rice varieties for possible selection for rice growing areas in Cross River State, Nigeria. J. Applied Scis. 14(2),9749-9761.
Uwah, D. F., Eneji, A. E., & Eshiet, U. J. (2011). Organic and mineral fertilizers effects on the performance of sweet maize (Zea mays L. saccharata Strut.) In south eastern rainforest zone of Nigeria. Int’l J. Agric. Scis., 3(1), 54-61.
Uwah, D. F., Udoh, A. U., Okpara, D. A., Eka, M. J., & Asawalam, D. O. (2011). Growth and yield of cocoyam (Colocasia esculenta (L.) Schott) following soil amendment with poultry manure and rice husk. J. Agric, Biotech & Ecol. 4(2), 1-10.
Uwah, D. F., & Iwo, G. A. (2011). Effectiveness of organic mulch on the productivity of maize (Zea mays L.) and weed growth. J. Anim. Plant Sci. 21(3),525-530.
Uwah, D. F., Udoh, A. U. and. Iwo, G. A. (2011). Effect of organic and mineral fertilizers on growth and yield of cocoyam (Colocasia esculenta (L.) Schott) Int’l. J. Agric. Scis. 3(1), 1-6.
Uwah, D. F., Afonne, F. A., & Essien, A. R. (2011). Integrated nutrient management for sweet maize (Zea mays L. saccharata Strut.) Production in Calabar, Nigeria. Aust. J. Basic & Appl. Scis, 5(11), 1019-1025.
Uwah, D. F., Effa, E. B., & Agbanyim, I. K. (2011). Influence of nitrogen and phosphorus on the growth and yield of cucumber (Cucumis sativus L.) J. Sci. Engr. Tech., 18(3), 10248-10269.
Effa, E. B., Uwah, D. F., & Iwo, G. A. (2011). Lime and nitrogen fertilizer effects on growth and yield of popcorn on an Ultisol in South Eastern Nigeria. Int’l J. Adv. Scientific & Technical Res., 2(1), 533-543.
Effa, E. B., Uwah, D. F., & Ukeh, D. A. (2011). Yield response of popcorn (Zea mays L. var. Everta) to nitrogen and lime amendment in a south eastern rainforest environment of Nigeria. Am. J. Plant Physiology, 6(6), 304-311.
Uwah, D. F., Ahmed, M. K., Amans, E. B., & Chiezey, U. F. (2010). Nitrogen and phosphorus effects on the field performance of watermelon (Citrullus lanatus (thumb) Mansf). Journal of Agric. Biotech and Ecology, 3(1), 10-22.
Uwah, D. F., Nwagwu, F. A., & Iwo, G. A. (2010). Response of okra (Abelmoschus esculentus (L.) Moench) to different rates of nitrogen and lime on an acid soil. Intl. J. Agric. Scis., 2(2), 14-22.
Uwah, D. F., Iwo, G. A. Nwagwu, F. A., Amaefula, C., & Joseph, S. N. (2010). Effect of harvest frequency and nitrogen rates on growth and edible leaf yield of fluted pumpkin (Telfairia occidentalis Hook. F.) Journal of Applied Sciences 13(3), 9199-9214.
Uwah, D. F., Iwo, G. A., Effa, E. B., Matthew, U. U., & Odinigwe, C. C. (2010). Growth and leaf yield of vegetable amaranth (Amaranthus cruentus L.) as affected by nitrogen and potassium fertilizers. J. Appl. Scis. 13(2), 9176-9187.
Undie, U. L., Uwah, D. F., & Attoe, E. E. (2010). The response of late season maize/soybean intercropping to nitrogen in the humid environment of South Southern Nigeria. J. Agric. Forestry and Soc. Scis., 8(2),152-165.
Effa, E. B., & Uwah, D. F. (2010). Varietal trial of cowpea (Vigna unguiculata L. walp) in Cross River State. Proc. 44th Annual Conf. Agric. Soc. Nig. Lautech Ogbomosho 2010, 880-884.
Nwagwu, F. A., Uwah, D. F., Iwo, G. A., & Nsemo, G. (2008). Effect of different seedbeds on weed control and the performance of okra (Abelmoschus esculentus (L) Moench) in the Calabar humid area. J. of Appl. Scs. 11 (1),7539-7550.
Iwo, G. A., & Uwah, D. F. (2008). On-farm evaluation of groundnut varieties for seed and forage yields in southern guinea savannah of Nigeria. UNISWA Res. J. Agric. Scis., & Tech. 11 (2), 129-134.
Iwo, G. A., & Uwah, D. F. (2007). Efficacy of beniseed (Sesamum indicum) as trap crop to striga species (parasitic weed). Nig. J. of Weed Sc. 20:47-51. (Nigeria)
Uwah, D. F., Solomon, M. G., & Nya, F. I. (2003). Response of rainfed popcorn (zea mays Everta) to nitrogen and inter-row spacings in South Eastern rain forest of Nigeria. J. Appl. Chem., & Agric. Res. 9:21-29.
Afangideh, U. M., & Uwah, D. F. (2001). Effects of different concentrations of polyethylene glycol on cells of three soybean cultivars. Global J. Pure and Appl. Scis. 7 (2), 229-233.
Uwah, D. F., & Afangideh, U. M. (2000). Growth and yield response of cucumber (Cucumis sativus L.) to nitrogen and potassium fertilizers. Nig. Southeast J. of Agric. Econs., & Ext. 2 (1 & 2), 62-69.
Fawusi, M. O. A., Uwah, D. F., & Vine, P. (1998). Effects of soil water table depths on the growth and yield of amaranthus, celosia and okra. Nig. J. Hort. Sc. 3: 22 -32.
Uwah, D. F., & Solomon, M. G. (1997). Yield and quality of watermelon (Citrullus lanatus (thumb) Mansf) as influenced by different levels of nitrogen and phosphorus fertilizers in a northern guinea savanna environment. Nigerian Southeast J. of Agric. Econs. & Ext. 1(2&3), 66 -77.
Solomon, M. G., & Uwah, D. F. (1996). Varietal trials of soybean and their contribution to soil nitrogen. J. Applied Chemistry and Agricultural Res. 3, 25-31.
Udo, E. J., Ibanga, I. J., Solomon, M. G., Abang, S. O., Ele, I. E., Ntia, J. D., Uwah, D. F., Ogbonna, K. I., & Akpanidiok, A. U. (1994). Project design and formulation: Obrenyi farm for National Agricultural Land Development Authority (NALDA). A Technical Report submitted to Raw Materials Research and Development Council, Federal Ministry of Science and Technology, Abuja, Nigeria.
Solomon, M. G., Umoh, E. O., Itam, E., & Uwah, D. F. (1995). Improvement of baking quality of soyabean by incorporation of gluten genes from wheat. Project submitted to Raw Material Research and Development Council, Federal Ministry of Science and Technology, Abuja, Nigeria.
8th Annual Conf. of Organic Agric. Project in Tertiary Institutions in Nigeria (OAPTIN), “UNICAL ORGANIC 2012â€, University of Calabar, 5th – 9th November, 2012.
47th Annual Conf. of the Agric. Soc. Nig. (ASN) Fed. College of Ani, Health and Prod. Tech. Moor Plantation, Ibadan, “Ibadan 2013â€, 4th – 8th November, 2013.
2013-11-04
2013-11-08
2nd Ann. Nat Conf. of Crop Sci. Soc. of Nig. (CSSN), “NSUKKA, 2014â€, 21st-25th September, 2014.
