[1] Abdul-El-kader, A. A., Shaaban, S.M. and Abdul- El- Fattan, M.S. (2010). Effects of irrigation and organic compost on okra plants (Abelmoschus esculentusI.) grown in sandy cancerous soil. Agricultural Biology Journal of North America. 1(3): 225-231.
[2] Adediran, J.A, and Banjoko, 2V.A. (2003). Comparative effectiveness of some compost fertilizer formulations for maize in Nigeria. Nigerian Journal of soil science, 13: 24-49.
[3] Adekiya, A.O. andAgbede, T.M.(2009). Growth and yield of Tomato (LycopersiconEsculentus Mill) as influenced by poultry manure and NPK fertilizer. Journal of food.Agriculrure.21 (1): 10-20.
[4] Adeleye, E. O., Ayeni, L. S. and Ojeniyi, S. O. (2010). Effect of poultry manure on soil physico-chemical properties, leaf nutrient contents and yield of yam (Dioscorearotundata) on Afisol soil in South Western Nigeria. Journal of American science.6(10): 871-878.
[5] Adeosun J.O. (2000) Response of upland rice varieties (Oryza sativa L.) Varieties to nitrogen, period of weed interference and chemical weed control. Unpublished Ph.D. Dissertation submitted to the Postgraduate School Ahmadu Bello University, Zaria 143 p.
[6] Akanbi, W.B., Akande, M.O. and Adediran, J.A. (2005). Suitability of composted maize straw and mineral nitrogen fertilizer for tomato production. J. of Veg. Science. 11(1): 57-65.
[7] Akande, M. O., Oluwatoyinbo, F. I., Adediran, J. A., Buari, K. W. and Yusuf, I. O. (2003). Soil amendments affect the release of P from rock phosphate and the Development and yield of okra. Journal of Vegetable Crop Production. 9 (2):3–9
[8] Ayuso, M., J. A. Pascual, C. Garcia and T. Hernandez, (1996). Evaluation of Urban Waste for Agricultural Use. Soil SciencePlant Nutrition.42: 105-111.
[9] Dademal, A.A., Dangale, J.H. and Mhaskar, N.V. (2004). Effect of manures and fertilizers content and uptake of nutrients by okra on laterilic soil of konkan. J. soils and crops. 14 (2): 262-268.
[10] Ibrahim, L., Amau, A. and Abubakar, I.U. (2002). Gowth indices and yield of tomato (Lycopersiconesculentus) Varieties as influenced by crop spacing at Samaru. Proccedings of the 8th Annual Conference of Horticultural Society of Nigeria. 40-47 p.
[11] Ibrahim, U. and Hamma, I. L. (2012). Influence of Farmyard Manure and Weeding Regimes on Growth and Yield of Okra (Abelmoschus esculentus L. Moench) in, Zaria. World Journal of Agricultural Sciences. 8 (5):453-458.
[12] Katung, M.D., Olanrewaju, J.D. Gupta, U.S. and Kureh, I. (1996). Fruit and Seed yields of okra as influenced by Farm yard manure and Nitrogen fertilizer. In:Proc.14th HORTSON Conf; Ago-Iwoye, 1-4 April, 1996.
[13] Makinde, E.A., Agboola, A.A. and Oluwatoyinbo, F.I. (2001). The effects of organic and inorganic fertilizers on the growth and yield of maize in maize / melon intercrop. Moor journal of Agricultural Research. 2:15-20.
[14] Musa, M., Bashir, K. A., Tadda, S. A. (2017). Response of cowpea (vignaunguiculatal.
[15] Walp) varieties to phosphorus levels in Sudan savanna of Nigeria.International Multidisciplinary Research Journal.7: 23-29.
[16] Musa, M., Bashir K. A. and Musa A. (2020). Influence of NPK Fertilizer and Poultry Manure
[17] on the Growth of Okra (Abelmoschus esculentus L. Moench) in Northern Sudan Savanna Region of Nigeria. International journal of Horticulture, Agriculture and Food science(IJHAF). 4(6): 196-204.
[18] Nehra, A.S., Hooda, I.S. and Singh, K.P. (2001). Effect of integrated nutrient management On growth and yield of wheat (TriticurnaestivumL.) Indian Journal of Agronomy 45: 112117.
[19] Ogunwale, J. A. (2003). Soil phosphorus and phosphate fixation. Third in the series, Faculty of Agriculture, University of Ilorin, Nigeria. 20 p.
[20] Olaniyi, J.O., Ogunrinde, J.O., Olabode, O.S. and Akanbi, W.B. (2005). Effect of organic mineral fertilizer Application on growth, yield and nutrient uptake of Maize. Journal of Applied Agricultural and Apicultural Research. 2(1):10-19.
[21] Oshunsanya, S.O. (2011). Improving the physical properties of a degraded alfisol in Nigeria using organic amendments for profitable okra production. Nigerian journal of Soil Sci-ence. 21 (2): 90-94.
[22] Raemaekers, R.H. (2001). Crop Production in Tropical Africa. Directorate General for International Co-operation, Ministry of Foreign Affairs, Brussels, Belgium, Pp1-154.
[23] Senjobi, B. A., Peluola, A. C., Senjobi, C. T., Lawal, I. O. and Salam, B. T. (2010). Performance of Cochorusolitoriusas influenced by soil type and organic manure amendments in Yewa North Local GovernmentArea, Ogun state. African journal of Biotechnology.9(33): 5309-531.
[24] Singh, T.R., Singh, S.K., Singh, M.P. and Srivastava, B.K. (2004). Effect of Integrated Nutrient Management on CropNutrient Uptake and Yield under Okra-Pea-Tomato Cropping System in a Mollisol. Indian Journal of Horticulture.61(4):312-314.
[25] Smith, M.A.K., Tolorun, T. P. and Aneji, O. S. (2001). Effect of combine mulch and fertilizer on weed growth and okra (Abelmoschus esculentus L. Moench) yield in the humid tropical environment, Proceedings of the 35th annual conference of the Agricultural society of Nigeria, University of Agriculture Abeokuta, Sep. 16-20, 2001, 43-50 p.
[26] Sonkuwar, R.H., Mahakal, K.H. and Lale, B.B. (1997). Effect of different levels of nitrogen on Growth and Yield in Okra varieties. PKV. Research journal. 21 (2): 202-204.