Kelly, V. (2005). Farmers’ demand for fertilizer in Sub-Saharan Africa. East Lansing, Michigan.

- <mark>Key, N., Sadoulet, E., & De Janvry, A. (2000). Transactions costs and agricultural household supply response.</mark> _<mark>American Journal of Agricultural Economics</mark>_ <mark>,</mark> _<mark>82</mark>_ <mark>(2), 245-259.</mark>

- <mark>Kherallah, M., Delgado, C. L., Gabre-Madhin, E. Z., Minot, N., & Johnson, M. (2002).</mark> _<mark>Reforming agricultural markets in Africa: Achievements and challenges</mark>_ <mark>. Intl Food Policy Res Inst.</mark>

- <mark>Kouka, P. J., Jolly, C. M., & Henao, J. (1994). Agricultural response functions for limited resource farmers in Sub-Saharan Africa.</mark> _<mark>Fertilizer research</mark>_ <mark>,</mark> _<mark>40</mark>_ <mark>(2), 135-141.</mark>

Liverpool-Tasie, L.S.O, (2014). Is fertilizer use suboptimal in sub Saharan Africa? The case of rice in Nigeria. Working Paper. Michigan State University

- Liverpool-Tasie, L.S.O, B.T. Omonona. A.Sanou and W.Ogunleye (2015). Understanding fertilizer use and profitability across Nigeria’s diverse agro ecological conditions. Working Paper. Michigan State University

- Liverpool-Tasie, L.S.O, Adjognon, S and Kuku-Shittu, Y (2014).Productivity effects of sustainable intensification: The case of Urea deep placement for rice production in Niger State, Nigeria

- <mark>Liverpool-Tasie, L. S., & Takeshima, H. (2013). Moving forward with fertilizer in Nigeria: Fertilizer promotion strategies within a complex fertilizer subsector.</mark> _<mark>Agr. Econ</mark>_ <mark>,</mark> _<mark>44</mark>_ <mark>(6).</mark>

- Longtau, S. (2003). Rice Production in Nigeria. Literature Review. Multi-agency partnerships in West African Agriculture. A review and description of rice production system in Nigeria.

- <mark>Mahajan, G., Chauhan, B. S., & Gill, M. S. (2011). Optimal nitrogen fertilization timing and rate in dryseeded rice in northwest India.</mark> _<mark>Agronomy Journal</mark>_ <mark>,</mark> _<mark>103</mark>_ <mark>(6), 1676-1682.</mark>

- <mark>Matsumoto, T., & Yamano, T. (2011). Optimal fertilizer use on maize production in east africa. In</mark> _<mark>Emerging Development of Agriculture in East Africa</mark>_ <mark>(pp. 117-132). Springer Netherlands.</mark>

- <mark>Marenya, P. P., & Barrett, C. B. (2009a). State-conditional fertilizer yield response on western Kenyan farms.</mark> _<mark>American Journal of Agricultural Economics</mark>_ <mark>,</mark> _<mark>91</mark>_ <mark>(4), 991-1006.</mark>

- <mark>Marenya, P. P., & Barrett, C. B. (2009b). Soil quality and fertilizer use rates among smallholder farmers in western Kenya.</mark> _<mark>Agricultural Economics</mark>_ <mark>,</mark> _<mark>40</mark>_ <mark>(5), 561-572.</mark>

- Mogues T, M Morris, L Freinkman, A Adubi & S Ehui. (2012). _Agricultural Public Spending in Nigeria._ In _Public Expenditures for Agricultural and Rural Development in Africa_ , edited by T. Mogues and S. Benin. London and New York: Routledge, Taylor and Francis Group.

- Morris, M., Kelly, V., Kopicki, R., & Byerlee, D. (2007). _Fertilizer use in African agriculture: Lessons learned and good practice guidelines._ Washington, DC: World Bank

- <mark>Mustapha, A. R. (2003). Colonialism and environmental perception in Northern Nigeria.</mark> _<mark>Oxford Development Studies</mark>_ <mark>,</mark> _<mark>31</mark>_ <mark>(4), 405-425.</mark>

- <mark>Mutambara, J., Ayoola, G. B., Ejembi, E. P., Avav, T., Masvongo, J., & Moyo, S. (2013). Production and productivity of maize subjected to modern and traditional methods of weed control options in Federal Capital Territory, Nigeria.</mark> _<mark>Journal of Agricultural Extension and Rural Development</mark>_ <mark>,</mark> _<mark>5</mark>_ <mark>(5), 107-114.</mark>

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