Combined effect of rainfall and sunshine duration on cassava output in Nigeria

Authors

  • O. D. ABERJI Department of Agricultural Economics, Dennis Osadebay University, Asaba, Delta State
  • G. E. OYITA Department of Agricultural Economics and Agribusiness, Faculty of Agriculture, Dennis Osadebay University, Asaba, Delta State, Nigeria https://orcid.org/0000-0003-4829-1479
  • S. ENWA Department of Agricultural Economics, Faculty of Agriculture, Delta State University, Abraka, Delta State, Nigeria https://orcid.org/0000-0003-4115-1836

DOI:

https://doi.org/10.54386/jam.v27i2.2935

Keywords:

Cassava Production, Rainfall Variability, Sunshine Duration, Moderating Effect, Climate-Smart Agriculture, Nigeria

Abstract

This study examined the combined effect of rainfall and sunshine duration on Casava production in Nigeria from 1988 to 2023 using secondary data obtained from the Nigeria Meteorological Agency (NiMet) and the Food and Agriculture Organization (FAO). Econometric techniques were employed to analyse the relationships between the variables. Regression analysis revealed that cassava yield was significantly negatively related with rainfall (β = -73,133.9; p = 0.000), while sunshine duration was positive and significant (β = 8,755,640.3; p = 0.000). Rainfall and sunshine duration interaction was significant and positive (β = 7,611.8; p = 0.000) and revealed that sunshine duration was mediating the adverse effect of excessive rainfall. The model explained a high explanatory power with R-squared being 0.896 and adjusted R-squared being 0.881. The error correction model (ECM) coefficient (-0.934) showed a high speed of adjustment towards equilibrium, which meant that the deviations in the output of cassava as a result of climate variability were adjusted quickly. Based on the findings of this study, farmers are encouraged to adopt water management practices and improved agronomic practices in an attempt to enhance the positive effects of sunshine duration on cassava yield.

References

Adejuwon, J. O. and Agundiminegha, Y. G. (2019). Impact of climate variability on cassava yield in the humid forest agro-ecological zone of Nigeria. J. Appl. Sci. Environ. Manag., 23(5): 903-908. DOI: https://doi.org/10.4314/jasem.v23i5.21

Anyaegbu, C. N., Okpara, K. E., Taweepreda, W., Akeju, D., Techato, K., Onyeneke, R. U., ... and Pongpiachan, S. (2022). Impact of climate change on cassava yield in Nigeria: An autoregressive distributed lag bound approach. Agriculture, 13(1): 80. DOI: https://doi.org/10.3390/agriculture13010080

Ekundayo, B. P., Olutumise, A. I. and Akinrinola, O. O. (2021). A time series analysis of the nexus between climate change and cassava production in Southwest Nigeria. In “Handbook of Climate Change Management: Research, Leadership, Transformation” (pp. 1347-1363). Cham: Springer International Publishing. DOI: https://doi.org/10.1007/978-3-030-57281-5_312

Eze, E. U., Osuji, E. E., Enyia, C. O., Nwose, R. N., Ugochukwu, G. U., Tim-Ashama, A. C., ... and Nwaizuzu-Daniel, J. C. (2023). Efficiency of Marketing Systems of Cassava in Southeast, Nigeria. Emerg. Issues Agric. Sci., 44. DOI: https://doi.org/10.9734/bpi/eias/v6/19694D

Ezui, K. S., Franke, A. C., Mando, A., Ahiabor, B. D. K., Tetteh, F. M., Sogbedji, J., ... and Giller, K. E. (2016). Fertiliser requirements for balanced nutrition of cassava across eight locations in West Africa. Field Crops Res., 185: 69-78. DOI: https://doi.org/10.1016/j.fcr.2015.10.005

FAO. (2023). Food and Agriculture Organization of the United Nations: Cassava production statistics. https://www.fao.org. Retrieved on 22nd January, 2025

Iliyasu, A. M., Mohammed, A., Alfred, B. Y., Affi, J. I. and Umar, G. (2019). Effects of Rainfall Variability on Cassava Yield in Owerri North Local Government Area of Imo State, Nigeria. J. Environ. Earth Sci., 9(3): 127-136. DOI: https://doi.org/10.7176/JEES/9-3-12

Lee, Seung Kyu and Truong An Dang. (2020). Assessment of efficient crop planting calendar for cassava crops using the FAO-Aqua crop model. J. Agrometeorol., 22(1): 83–85. https://doi.org/10.54386/jam.v22i1.132

Maduegbuna, J. I., Orakwe, L. C., Nwanna, E. C., Ubah, J. I., Anizoba, D. C., Nwachukwu, C. P. and Umeghalu, I. C. E. (2024). Determination of climatic factors with the greatest impact on cassava production in Anambra state. UNIZIK J. Eng. Appl. Sci., 3(2): 764-776. https://journals.unizik.edu.ng/ujeas/article/view/3976. Retrieved on 22nd January, 2025

Nguyen, Van Hong, and Truong An, Dang. (2021). Potential benefits of altering the cassava farming practices in the water shortage regions of Vietnam. J. Agrometeorol., 23(4): 396–401. https://doi.org/10.54386/jam.v23i4.143

NiMet. (2023). Nigeria Meteorological Agency: Annual Climate Report. Retrieved from https://nimet.gov.ng/datarequest Retrieved on 22nd January, 2025

Oyita, G. E., Enwa, S. and Aberji, O. D. (2023). Climate Variability, Cassava Output and Food Security in Nigeria. Nig. Agric. Policy Res. J., 10(1): 20-26. DOI: http://dx.doi.org/10.22004/ag.econ.343398

Pandey, V. (2023). Climate variability, trends, projections and their impact on different crops: A case study of Gujarat, India. J. Agrometeorol., 25(2): 224-238. https://doi.org/10.54386/jam.v25i2.2151

Pushpalatha, R., Govindan Kutty, and Byju Gangadharan. (2021). Sensitivity analysis of WOFOST for yield simulation of cassava over the major growing areas of India. J. Agrometeorol., 23(4): 375–380. https://doi.org/10.54386/jam.v23i4.140

Sowunmi, F. A. (2020). Effects of climatic variability on cassava production in Nigeria. J. Agribus. Rural Dev., 57(3): pp. 327-335. DOI: https://doi.org/10.17306/J.JARD.2020.01373

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Published

01-06-2025

How to Cite

ABERJI, O. D., OYITA, G. E., & ENWA, S. (2025). Combined effect of rainfall and sunshine duration on cassava output in Nigeria . Journal of Agrometeorology, 27(2), 163–167. https://doi.org/10.54386/jam.v27i2.2935

Issue

Vol. 27 No. 2 (2025): June

Section

Research Paper

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