Statistical Study of Dry Spells and Their Impact on Rainfed Corn in the Burkinabe Sahel

Chaim Vivien Doto^1, , Dial Niang¹, Malicki Zorom¹ and Hamma Yacouba¹

¹International Institute for Water and Environmental Engineering, 01 P.O. BOX poisson@594, Ouagadougou, Burkina Faso

Cite this paper

Chaim Vivien Doto, Dial Niang, Malicki Zorom and Hamma Yacouba. Statistical Study of Dry Spells and Their Impact on Rainfed Corn in the Burkinabe Sahel. American Journal of Water Resources. 2020; 8(1):31-37. doi: 10.12691/AJWR-8-1-4

Abstract

This study aimed at characterizing dry spells and their potential impact in corn rainfed agriculture in the Burkinabe Sahel in order to help managers of rural environments to better plan the corn growing season in this area characterized by high climatic variability. This characterization was made possible through a typology of intra-dekadal dry spells and an inter-dekadal analysis of dry spells with the first-order Markov chains, allowed proposing a mitigation alternative of the effect of dry spells on corn growing. Results showed that climatic risk which arises for rainfed corn production is reduced if sowing was done in the third 10-day period (or dekad) of June. This is justified by the fact that the probability of having two consecutively dry dekads during the most sensitive periods to water stress (i.e the mid-season) was less than 20% while it was over 30% for two consecutively wet dekads. However, because of the increased potential impact of the dry spells longer than 7 days during the mid-season, the coupling of this sowing scenario to supplemental irrigation would be the robust alternative adaptation to climate variability in the Burkinabe Sahel. Nevertheless, subsequent studies can be carried out to quantify this potential impact of dry spells on corn under rainfed farming.

Keywords

dry spells occurrence, rainfed farming, climatic risk, corn, Sahel, Burkina Faso

Copyright

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References

[1]	Nicholson, E., Sub-Saharan Raifall in the years 1976-1980. Evidence of continued drought. Monthly Weather Review, 111 (8): 1646-1654, 1983.
[2]	Servat, T.E., Paturel, J.E., Lubes, H., Kouame, B., Ouedraogo, M., Masson, J.M., Climatic variability in humid Africa along the Gulf of Guinea – Part I: detailed analysis of the phenomenon in Côte d’Ivoire. Journal of Hydrology, 191 (1-4): 1-15, 1997.
[3]	Sivakumar, M.V.K., Durée et fréquence des périodes sèches en Afrique de l'Ouest. Bulletin de Recherche n° 13. Pantancheru: ICRISAT, 1991.
[4]	Fodé, M., Adamou, M., Analyse des séquences sèches au Niger de 1950 à 1991. Faculté des sciences, département de Physique, Université Abdou Moumouni Niamey, Niger: 189-224, 1993.
[5]	Diouf, M., Nonguierma, A., Abou, A., Royer, A., Somé, B., Lutte contre la sécheresse au Sahel: résultats, acquis et perspectives au Centre régional AGRHYMET, Sécheresse, 11(4): 257-266, 2000.
[6]	Niang, D., Mermoud, A., Yacouba, H., Ribolzi, O., Temporal evolution of the hydrodynamic behaviour of sandy deposits in the Sahelian part of Burkina Faso. Journal of Soil Science and Environmental Management, 3, 297-307, 2012.
[7]	Sarr, B., Kafando, L., Atta, S., Identification des risques climatiques de la culture du maïs au Burkina Faso, International Journal of Biological and Chemical Sciences, 5 (4): 1659-1675, 2011.
[8]	DGPER (Direction Générale pour la Promotion de l’Economie Rurale), Analyse de la Compétitivité des Filières de Céréales Sèches au Burkina Faso. Ministère de l’Agriculture de l’Hydraulique et des Ressources Halieutiques. Press, Ouagadougou, Burkina Faso, 2010.
[9]	Andrews D.J., Effects of date of sowing on photosensitive Nigerian Sorghums. Experimental Agriculture; 9: 337, 1973.
[10]	Scheuring J.F., The dilemma of day length. In: National Research Council. Lost Crops of Africa. Volume I: Grains. Washington: National Academy Press, 54 p., 1996.
[11]	Traore, S.B., Reyniers, F-N., Vaksmann, M., Kone, B., Sidibe, A., Yorote, A., Yattara, K., Kouressy, M., Adaptation à la sécheresse des écotypes locaux de sorghos du Mali. Sécheresse, 11 (4): 227-2347, 2000.
[12]	Stern, R.D., Cooper, P.M.J., Assessing climate risk and climate change using rainfall data: a case study from Zambia. Experimental Agriculture, 47 (2): 241-266, 2011.
[13]	William, C.S.B., Sequences of wet and dry days considered in relation to the logarithmic series. Quarterly Journal of Royal. Meteorological: Society, 78 (335): 91-96, 1952.
[14]	Longlery, W., The length of dry and wet periods. Quarterly Journal of the Royal Meteorological Society, 79 (342): 520-527, 1953.
[15]	Gabriel, K.R., The distribution of the number of successes in a sequence of dependent trials. Biometrika, 46: 454-460, 1959.
[16]	Mathlouthi, M., Lebdi, F., Assessment of the reliability of reservoir dam operation for dry events. Hydrological Sciences Journal, 53: 6, 1194-1207, 2008.
[17]	Mathlouthi, M., Lebdi, F., Analyse statistique des séquences sèches dans un bassin du nord de la Tunisie Hydrological Sciences Journal, 54(3): 442-455, 2009.
[18]	Ibrahim, B., Caractérisation des saisons de pluies au Burkina Faso dans un contexte de changement climatique et évaluation des impacts hydrologiques sur le bassin du Nakanbé. Thèse de doctorat de l’université Pierre et Marie Curie, Sciences de l’Environnement d’Ile-de-France, 245p., 2012.
[19]	Thirriot, C., Étude de la variabilité des séries suivant une chaîne de Markov binaire. Rapport interne. Institut de mécanique des fluides de Toulouse, CT 584, 1983.
[20]	Thirriot, C., Simplicité et efficacité des chaînes de Markov comme modèle de la pluviométrie. Arch Hydrotherapy, 23: 1-2, 1986.
[21]	Arnaud, M., Contribution à l'étude stochastique markovienne des précipitations dans le bassin Adour- Garonne. Thèse présentée pour obtenir le titre de Docteur de l'Institut national polytechnique de Toulouse, 1985.
[22]	Gabriel, K.R., Newman, J., A markov chain model for daily rainfall occurrence at Tel Aviv. Quarterly Journal of Royal Meteorological Society, 88: 90-95, 1962.
[23]	Pallo, F.J.P., Statut de la matière organique des sols sous formations naturelles de longue durée au Burkina Faso. Thèse de doctorat d’État ès sciences naturelles: Université Polytechnique de Bobo-Dioulasso (Burkina Faso), 2009.
[24]	Semde, A., Ministère de l’agriculture de l’hydraulique et des ressources halieutiques, Etudes morpho-pédologiques des provinces du Yatenga, du Loroum et du Zandoma, Bureau national des sols, Rapport technique n°122, Ouagadougou, 2004.
[25]	Wey, J. Etude de la variabilité du rendement du maïs au Burkina Faso. Thèse de doctorat, INPL, Nancy, 200p., 1998.
[26]	Doto, C.V., Yacouba, H., Niang, D., Lahmar, R. and Agbossou, K.E., Mitigation effect of dry spells in Sahelian rainfed agriculture: case study of supplemental irrigation in Burkina Faso. African Journal of Agricultural Research, 10, 1863-1873, 2015.
[27]	Allen, R.G., Pereira, L.S., Raes, D., Smith, M., Crop evapotranspiration. Guidelines for Computing Crop Water Requirements. Irrigation and Drainage, Paper n°56, FAO, Rome, 333p., 1998.
[28]	Doto C.V., L’irrigation de complément à partir de petits bassins individuels en zone sahélienne burkinabè: impact sur la production des exploitations agricoles familiales. Thèse de doctorat Réf: 2iE/2016-03. Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Ouagadougou, Burkina Faso, 199p., 2016.
[29]	Afouda, A., Adisso, P., Etude stochastique des structures de séquences sèches au Bénin. Sustainability of Water Resources under Increasing Uncertainly (Proceedings of the Rabat Symposium S1. IAHS Publ. no. 240. Rabat, Maroc, 1997.
[30]	Stern, R., Rijks, D., Dale, I., Knock, J., Instat climatic guide. 332p., 2006.
[31]	Allen, R.G., Clemmens, A.J., Burt, C.M., Solomon K., O’Halloran, T., Prediction accuracy for evapotranspiration using crop coefficients and reference evapotranspiration. Journal of Irrigation and Drainage Engineering, 131: 24-36, 2005.
[32]	Afouda, A., Contribution à la représentation mathématique du fonctionnement hydrodynamique des bassins versants. Thèse d'Etat no. 98, INP-Toulouse, France, 1985.
[33]	Some, L., Sivakumar, M.V.K., Analyse de la longueur de la saison culturale en fonction de la date de début des pluies au Burkina Faso. Compte rendu des travaux n°1: Division du sol et Agroclimatologie. INERA, Burkina Faso, 43pp., 1994.
[34]	Sarr, B., Atta, S., Ly, M., Salack, S., Ourback, T., Subsol, S., Alan George D., Adapting to climate variability and change in smallholder farming communities: Acase study from Burkina Faso, Chad and Niger (CVCADAPT). Journal of Agricultural Extension and Rural Development, 7 (1): 16-27, 2015.
[35]	Moeltsi, M.E., Wlaker, S., Landman, W.A., ENSO and implication on rainfall characteristics with reference to maize production in the Free State Province of South Africa. Physics and Chemistry of the Earth, 36 (14-15): 715-726, 2011.
[36]	Hills, R.C., Morgan, J.H.T., Rainfall statistic: An interactive approach to analysing rainfall records for agricultural purpose. Experimental Agriculture, 17: 1-16, 1981.
[37]	Wang, Y.M., Traore, S. and Kerh, T., Applying evapotranspiration reference model and rainfall contribution index for agricultural water management Plan in Burkina Faso. African Journal of Agricultural Research, 4, 1493-1504, 2009.