December 2019, Volume 6, 4, pp 183-197
Chemical fertilizers, Maize grain yield, Nitrogen, Phosphorus, Poultry manure, Zea mays.
Awodun, M., 2007. Effect of poultry manure on the growth, yield and nutrient content of fluted pumpkin (Telfaria occidentalis Hook F). Asian Journal of Agricultural Research, 1(2): 67-73.Available at: https://doi.org/10.3923/ajar.2007.67.73.
Ayeni, L.S. and M.T. Adetunji, 2010. Integrated application of poultry manure and mineral fertilizer on soil chemical properties, nutrient uptake, yield and growth components of maize. Nature and Science, 8(1): 60-76.
Ayoola, O. and E. Makinde, 2009. Maize growth, yield and soil nutrient changes with n-enriched organic fertilizers. African Journal of Food, Agriculture, Nutrition and Development, 9(1): 580-592.Available at: https://doi.org/10.4314/ajfand.v9i1.19214.
Central Statistical Agency (CSA), 2017. Agricultural sample survey report on area and production for major crops (private peasant holdings meher season) for 2016/17. The Federal Democratic Republic of Ethiopia, Statistical Bulletin. No. 584. Addis Ababa, Ethiopia.
Crawford, T.W., V.V. Rendig and F.E. Broadbent, 1982. Sources, fluxes, and sinks of nitrogen during early reproductive growth of maize (zea mays l.). Plant Physiology, 70(6): 1654-1660.Available at: https://doi.org/10.1104/pp.70.6.1654.
CSA, 2017. Agricultural sample survey report on area and production for major crops (private peasant holdings meher season) for 2016/17. The Federal Democratic Republic of Ethiopia, Statistical Bulletin. No. 584. Addis Ababa, Ethiopia.
Enujeke, E., 2013. Response of watermelon to five different rates of poultry manure in asaba area of delta state, Nigeria. IOSR Journal of Agriculture and Veterinary Science, 5(2): 45-50.Available at: https://doi.org/10.9790/2380-0524550.
Enujeke, E., 2013. Effects of poultry manure on growth and yield of improved maize in Asaba area of delta state, Nigeria. Journal of Agriculture and Veterinary Sciences, 4: 24-30.Available at: https://doi.org/10.9790/2380-0452430.
Gudeta, N., S. Twumasi-Afriyie, A.K. Demisew, A. Bayisa, N. Demoz, Y. Kassa, Z. Habtamu, T. Leta, J. Habte, F. Wondim, A. Solomon, A. Abiy, A. Jemal, K. Abrha, G. Hintsa and T. Habtamu, 2011. Development of improved maize germplasm for Highland agro-ecologies of ethiopia in: Mosisa et al (Eds), Meeting the Challenges of Global Climate Change and Food Security through Innovative Maize Research. Proceedings of the Third National Maize Workshop of Ethiopia, April 18–20, 2011, Addis Ababa, Ethiopia.
Hashim, M., S. Dhar, A. Vyas, V. Ramesh and B. Kumar, 2015. Integrated nutrient management in maize (Zea mays L)-wheat (Triticum aestivum L.) cropping system. Indian Journal of Agronomy, 60(3): 352-359.
Khaliq, T., T. Mahmood and A. Masood, 2004. Effectiveness of farmyard manure, poultry manure and nitrogen for corn (zea mays l.) productivity. International Journal of Agriculture and Biology, 6(2): 260-263.
Khan, H., M. Malik and M. Saleem, 2008. Effect of rate and source of organic material on the production potential of spring maize (zea mays l.). Pakistan Journal of Agricultural Sciences, 45(1): 40-43.
Murphy, H.F., 1968. A report on the fertility status and other data on some soils of Ethiopia. College of agriculture Haile Sellassie I University. Experiment Station Bulletin No. 44, Dire Dawa, Ethiopia.
Rajeshwari, R.S., N.S. Hebsur, H.M. Pradeep and T.D. Bharamagoudar, 2007. Effect of integrated nutrient management on growth and yield of maize. Karnataka Journal of Agricultural Sciences, 20(2): 399-400.
Sharif, M., M. Ahmed, M.S. Sharir and R.A. Khattak, 2004. Effect of organic and inorganic fertilizers on the yield and yield components of maize. Pakistan Journal of Agriculture, Agricultural Engineering and Veterinary Science, 20(1): 11-15.
Singh, L., S. Kumar, K. Singh and D. Singh, 2017. Effect of integrated nutrient management on growth and yield attributes of maize under winter season (Zea mays L.). Journal of Pharmacognosy and Phytochemistry, 6(5): 1625-1628.
Tolessa, D. and D.K. Friesen, 2001. Effect of enriching farm yard manure with mineral fertilizer on grain yield of maize at Bako, Western Ethiopia. Seventh Eastern and Southern Africa Regional Maize Conference. 11-15th February, pp: 335-337.
Tsedeke, A., B. Shiferaw, A. Menkir, D. Wegary, Y. Kebede, K. Tesfaye, M. Kassie, G. Bogale, B. Tadesse and T. Keno, 2015. Factors that transformed maize productivity in Ethiopia. Food Security, 7(5): 965-981.Available at: https://doi.org/10.1007/s12571-015-0488-z.
Wakene, N., N. Kefyalew, D.K. Friesen, J. Ransom and Y. Abebe, 2002a. Determination of optimum farmyard manure and NP fertilizer for maize under the farmers’ conditions. In: Proceeding of 7th East and South African Regional Maize Conference, 11-15th February 2002, Nairobi, Kenya. pp: 387-393.
Walkley, A. and I.A. Black, 1934. An examination of the degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Science, 37(1): 29-38.Available at: https://doi.org/10.1097/00010694-193401000-00003.