[
Abebe Z. & Feyisa H. (2017): Effects of Nitrogen Rates and Time of Application on Yield of Maize: Rainfall Variability Influenced Time of N Application. International Journal of Agronomy, Article ID 1545280, 10 pages, https://doi.org/10.1155/2017/1545280.10.1155/2017/1545280
]Search in Google Scholar
[
Abera T., Debele T., Wegary D. (2017): Effects of Varieties and Nitrogen Fertilizer on Yield and Yield Components of Maize on Farmers Field in Mid Altitude Areas of Western Ethiopia. International Journal of Agronomy, Article ID 4253917, 13 pages. https://doi.org/10.1155/2017/4253917.10.1155/2017/4253917
]Search in Google Scholar
[
Achiri D.T., Mbaatoh H.M., Njualem D. (2017): Agronomic and Yield Parameters of CHC202 Maize (Zea mays L.) Variety Influenced by Different Doses of Chemical Fertilizer (NPK) in Bali Nyonga, North West Region Cameroon. Asian Journal of Soil Science and Plant Nutrition, 2(4): 1-9.
]Search in Google Scholar
[
Afzal S., Islam M., Ur-Rehman O. (2014): Application of Mitscherlich–Bray Equation for Fertilizer Use on Groundnut. Communications in Soil Science and Plant Analysis, 45(12): 1636-1645, DOI: 10.1080/00103624.2014.907911.10.1080/00103624.2014.907911
]Search in Google Scholar
[
Akram A., Fatima M., Ali S., Jilani G., Asghar R. (2007): Growth, yield and nutrients uptake of sorghum in response to integrated phosphorus and potassium management. Pakistan Journal of Botany, 39: 1083–1087.
]Search in Google Scholar
[
Amin M.E.M.H. (2011): Effect of different nitrogen sources on growth, yield and quality of fodder maize (Zea mays L.). Journal of the Saudi Society of Agricultural Sciience, 10(1): 17–23.
]Search in Google Scholar
[
Bationo A., Hartemink A., Lungu O., Naimi M., Okoth P., Smaling E., Thiombiano L., (2012): Waswa B. Knowing the African soils to improve fertilizer recommendations. In: Improving Soil Fertility Recommendations in Africa Using the Decision Support System for Agrotechnology Transfer (DSSAT); Al, K.E., Ed.; Springer: Dordrecht, The Netherlands, 19–42.
]Search in Google Scholar
[
Bremner J.M. & Mulvaney C.S. (1982): Nitrogen-total. In: Methods of soil analysis. Part 2. Chemical and microbiological properties, Page, A. L., Miller, R. H. and Keeney, D. R. (Eds.), American Society of Agronomy, Madison, Wisconsin: Soil Science Society of America. pp: 595–624.
]Search in Google Scholar
[
Bumb B. (1995): Global Fertilizer Perspective, 1980–2000: The Challenges in Structural Transformation. Muscle Shoals, AL: IFDC.
]Search in Google Scholar
[
CIMMYT (International Maize and Wheat Improvement Center) (1988): From Agronomic Data to Farmer Recommendations: An Economics Training Manual. Mexico City: CIMMYT.
]Search in Google Scholar
[
Etchu K., Ndzi V., Ndamukong K., Oben B. (2012): Comparative performance of grasscutters (Thryonomys swinderianus) fed maize and rodent pellets as concentrate supplement under intensive management system in Cameroon. African Journal of Agricultural Research, 7(6): 883-891. https://doi.org/10.5897/ajar10.677.10.5897/AJAR10.677
]Search in Google Scholar
[
FAO-UNDP/ONAREST (1980): Soils and soil fertility management of lands of the Ekona Banana Estate,” Technical Report no. 11, Ekona, Cameroon: Cameroon Development Corporation.
]Search in Google Scholar
[
INS (2010): The population of Cameroon: Reports of presentation of the final results of the 3rd General Census of Population and Habitats (RGPH): Central Bureau of Census and Population Studies (BUCREP), National Institute of Statistics of Cameroon (INS), Ministry of Economy and Finance, Yaounde, Cameroon (In French).
]Search in Google Scholar
[
Jjagwe J., Chelimo K., Karungi J., Komakech A.J., Lederer J. (2020): Comparative Performance of Organic Fertilizers in Maize (Zea mays L.) Growth, Yield, and Economic Results. Agronomy, 10: 69. doi:10.3390/agronomy10010069.10.3390/agronomy10010069
]Search in Google Scholar
[
Kalra Y.P. & Maynard D.G. (1991): Methods manual for forest soil and plant analysis. Information Report NOR-X-319, Forestry Canada, Edmonton, Alberta: Northwest Region, Northern Forestry Centre, pp: 116.
]Search in Google Scholar
[
Kimani S.K., Macharia J.M., Gachengo C., Palm C.A., Delve R.J. (2004): Maize production in the central highlands of Kenya using cattle manures combined with modest amounts of mineral fertilizer. Uganda Journal of Agricultural Sciences, 9: 480–490.
]Search in Google Scholar
[
Kotschi J. (2015): Adverse impacts of mineral fertilizers in tropical agriculture. A soiled reputation. A study commission by Heinrich Böll Foundation, WWF Germany.
]Search in Google Scholar
[
Koul G.G. (2007): Effect of sowing methods, nitrogen levels and seed rates on yield and quality of fodder maize (Zea mays L.). M.Sc. Thesis, Faculty of Agriculture, University of Khartoum, Sudan.
]Search in Google Scholar
[
Koutika L.-S., Hauser S., Kamga J.M., Yerima B. (2005): Comparative study of soil properties under Chromolaena odorata, Pueraria phaseoloides and Calliandra calothyrsus. Plant and Soil, 266(1-2): 315-323. https://doi.org/10.1007/s11104-005-2279-3.10.1007/s11104-005-2279-3
]Search in Google Scholar
[
Landon J.R. (1991): Booker tropical soil manual. UK: Longman Scientific and Technical Essex.
]Search in Google Scholar
[
Liverpool-Tasie L.S.O., Omonona B.T., Sanou A., Ogunleye W.O. (2017): Is increasing inorganic fertilizer use for maize production in SSA a profitable proposition? Evidence from Nigeria. Food Policy, 67: 41–51.10.1016/j.foodpol.2016.09.011538444028413245
]Search in Google Scholar
[
Morris M.A., Kelly V.A., Kopicki R.J., Byerlee D. (2007): Fertilizer use in African agriculture: Lessons Learned and Good Practice Guidelines. Direction in development. Agriculture and rural development. The International Bank for Reconstruction and Development / The World Bank.10.1596/978-0-8213-6880-0
]Search in Google Scholar
[
Mucheru-Muna M., Daniel Mugendi D., Pypers P, Mugwe J., Kung’u J., Vanlauwe B., Merckx R. (2014): Enhancing maize productivity and profitability using organic inputs and mineral fertilizer in Central Kenya Small-Hold Farms. Experimental Agriculture, 50(2): 250-269. doi:10.1017/S0014479713000525.10.1017/S0014479713000525
]Search in Google Scholar
[
Nanganoa L.T., Njukeng J.N., Ngosong C., Atache S.K.E., Yinda G.S., Ebonlo J.N., Ngong J.N., Ngome F.A. (2019a): Short-Term benefits of Grain Legume Fallow Systems on Soil Fertility and Farmers’ Livelihood in the Humid Forest Zone of Cameroon. International Journal of Sustainable Agricultural Research, 6(4): 213-22.10.18488/journal.70.2019.64.213.223
]Search in Google Scholar
[
Nanganoa L.T., Okolle J.N., Missi V., Tueche J.R., Levai L.D., Njukeng J.N. (2019b): Impact of different land-use systems on soil physicochemical properties and macrofauna abundance in the humid tropics of Cameroon. Applied and Environmental Soil Science, 2019(2): 1-9. https://doi.org/10.1155/2019/5701278.10.1155/2019/5701278
]Search in Google Scholar
[
Ngome A.F., Becker M., Mteia M.K., Mussgnug F. (2011): Fertility management for maize cultivation in some soils of Western Kenya. Soil & Tillage Research, 117: 69-75.10.1016/j.still.2011.08.010
]Search in Google Scholar
[
Ngome A.F., Becker M., Mtei M.K., Mussgnug F. (2013): Maize productivity and nutrient use efficiency in Western Kenya as affected by soil type and crop management. International Journal of Plant Production, 7(3): 517-536.
]Search in Google Scholar
[
Ngosong C., Bongkisheri V., Tanyi C.B.,, Nanganoa L.T., Tening A.S. (2019): Optimizing Nitrogen Fertilization Regimes for Sustainable Maize (Zea mays L.) Production on the Volcanic Soils of Buea Cameroon. Advances in Agriculture, Article ID 4681825: 8 pages, https://doi.org/10.1155/2019/4681825.10.1155/2019/4681825
]Search in Google Scholar
[
Odhiambo J.O., & Magandini V.N. (2008): An assessment of the use of mineral and organic fertilizers by smallholder farmers in Vhembe District, Limpopo province, South Africa. African Journal of Agricultural Research, 3(5): 357-362.
]Search in Google Scholar
[
Onasanya R.O., Aiyelari O.P., Onasanya A., Oikeh S., Nwilene F.E., Oyelakin O.O. (2009): Growth and Yield Response of Maize (Zea mays L.) to Different Rates of Nitrogen and Phosphorus Fertilizers in Southern Nigeria. World Journal of Agricultural Sciences, 5(4): 400-407.
]Search in Google Scholar
[
Price N. (1994): Alternate cropping in the management of radopholus similis and cosmopolites sordidus two important pests of banana and plantain. International Journal of Pest Management, 40(3): 237-244. https://doi.org/10.1080/09670879409371890.10.1080/09670879409371890
]Search in Google Scholar
[
Rowell D.L. (1994): Soil science: Methods and applications. England, UK: Addison Wesley Longman Singapore Publishers (Pte) Ltd. pp: 350.
]Search in Google Scholar
[
Rurinda J., Zingore S., Jibrin JM., Balemi T., Masuki K., Andersson J.A., Pampolinog M.F., Mohammedh I., Mutegia J., Kamarah A.Y., Vanlauwei B., Craufurdj P.Q. (2020): Science based decision support for formulating crop fertilizer recommendations in sub Saharan Africa. Agricultural Systems, 180: 102790. https://doi.org/10.1016/j.agsy.2020.102790.10.1016/j.agsy.2020.102790706370032255892
]Search in Google Scholar
[
Saxena M.C. & Singh Y. (1965): A note on leaf area estimation of intact maize leaves. Indian Journal of Agronomy, 10: 437-439.
]Search in Google Scholar
[
Sheahan M.B. (2011): Analysis of Fertilizer Profitability and Use in Kenya. PhD Thesis, Michigan State University, United State of America.
]Search in Google Scholar
[
Sommer R., Bossio D., Desta L., Dimes J., Kihara J., Koala S., Mango N., Rodriguez D., Thierfelder C., Winowiecki L. (2013): Profitable and Sustainable Nutrient Management Systems for East and Southern African Smallholder Farming Systems – Challenges and Opportunities, Working Paper, pp. 92. doi: 10.13140/RG.2.1.2498.2642.
]Search in Google Scholar
[
Tayoh L.N., Kiyo L.M.R., Nkemnyi M.F. (2016): Chemical fertilizer application and farmers perception on food safety in Buea, Cameroon. Agricultural Science Research Journal, 6(12): 287 – 295.
]Search in Google Scholar
[
Temegne N.C., Ngome F.A., Suh C., Youri A., Basga S.D. (2020): Determining Appropriate Fertilizer Scheme for Maize and Sorghum Cultivation in the Sahel Agroecological Zone of Cameroon. Journal of Experimental Agriculture International, 42(8): 50-58.10.9734/jeai/2020/v42i830570
]Search in Google Scholar
[
Tittonell P. & Giller K. (2013): When yield gaps are poverty traps: The paradigm of ecological intensification in African smallholder agriculture. Field Crops Research, 143(1): 76–90.10.1016/j.fcr.2012.10.007
]Search in Google Scholar
[
Van Reeuwijk, L.P. (1992): Procedures for soil analysis. 3rd Edn., Wageningen: International Soil Reference and Information Centre (ISRIC).
]Search in Google Scholar
[
Wheeler S.A. (2008): What influences agricultural professionals’ views towards organic agriculture? Ecological Economics, 65(1): 145 – 154.10.1016/j.ecolecon.2007.05.014
]Search in Google Scholar