1. Adeley EO, Ayeni LS, Ojeniyi SO (2010) Effect of poultry manure on soil physico-chemical properties, leaf nutrient contents and yield of yam (Dioscorea rotundata) on Alfisol in Southwestern Nigeria. J Am Sci 6(10):871–878
2. Alef K, Nannipieri P (1995) Methods in applied soil microbiology and biochemistry. Academic Press, London
3. Alvarenga P, Palma P, Mourinha C, Farto M, Dôres J, Patanita M, Cunha-Queda C, Natal-da-Luz T, Renaud M, Sousa JP (2017) Recycling organic wastes to agricultural land as a way to improve its quality: a field study to evaluate benefits and risks. Waste Manage 61:582–592
4. Anderson JPE (1982) Soil respiration. In: Page AL, Miller RH, Keeney DR (eds) Methods of soil analysis, Part 2, Chemical and microbiological properties. American Society of Agronomy and Soil Science Society of America, Madison, Wisconsin, pp 831–872
5. Ayeni LS, Adetunji MT (2010) Integrated application of poultry manure and mineral fertilizer on soil chemical properties, nutrient uptake, and yield and growth components of maize. Nat Sci 8(1):60–67