Soil salinisation is one of the main problems in agriculture. To overcome
this problem, different methods of managing saline soils are used, including
the practice of leaching under irrigation. The objective of this study is to
evaluate the effect of different leaching fractions on saline soils in the
Nguetiouro lowland in Gandiolais, in Senegal. For this purpose, a completely
randomized block set-up has been implemented with three treatments, repeated
three times: 1) T0 equivalent to a water volume input equal to the daily
reference evapotranspiration (ETo), 2) T1 equivalent to a water volume input
equal to the daily reference evapotranspiration plus 10% ETo of leaching and 3)
T2 equivalent to a water volume input equal to the daily reference evapotranspiration of the medium plus 20% ETo of leaching. The
results showed that leaching has an effect on soil salinity. The initial
soil salt storage was reduced by 22.5%, 33.5%, and 50.6% in the first soil
horizon, from 0 to10 cm
and by 14%, 35.3%, and 45% at depth from 10 to 30 cm for T0, T1, and T2,
respectively. The fitting of simple linear regression models between electrical
conductivity and soil moisture showed a negative linear relationship as a
function of leaching fractions. The coefficients of determination of model are
0.74 for T0, 0.84 for T1 and 0.86 for T2 in the first soil horizon and 0.63 for
T0, 0.83 for T1 and 0.88 for T2 in the depth form 10 to 30 cm. These results
can be of great importance in the fight against soil salinity.
References
[1]
FAO (2021) E Salt-Affected Soil Are a Global Issue.
[2]
Fall, D. (2016) Contribution à l’amélioration de la tolérance à la salinité de Senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter et Prosopis juliflora (Swartz) DC par inoculation microbienne et apport de coques d’arachide. Cheikh anta diop de dakar.
[3]
FAO-IPTRID (2006) Electronic Conference on Salinization: Extension of Salinization and Strategies of Prevention and Rehabilitation.
[4]
Loyer, J.Y. (1991) Classification des sols salés: Les sols Salit. Cah. ORSTOM (Office De La Recherche Scientifique et Technique D'outre-Mer), 26, 51-61.
[5]
Marlet, S. and Job, J.-O. (2006) Processus et Gestion de la Salinité des sols. In: Traité d’irrigation, Seconde Edition, Tec & Doc Lavoisier, Paris, 797-822.
[6]
Cirelli, A., Arumí, J.L., Rivera, D. and Boochs, P.W. (2009) Environmental Effects of Irrigation in Arid and Semi-Arid Regions. Chilean Journal of Agricultural Research, 69, 27-40. https://doi.org/10.4067/S0718-58392009000500004
[7]
Nkonya, E., Gerber, N., Baumgartner, P., Braun, J. von, De Pinto, A., Graw, V., Kato, E., Kloos, J. and Walter, T. (2011) The Economics of Desertification, Land Degradation, and Drought toward an Integrated Global Assessment. Zentrum für Entwicklungsforschung (ZEF), Bonn. https://doi.org/10.2139/ssrn.1890668
[8]
Sow, S., Nkonya, E., Meyer, S. and Kato, E. (2016) Cost, Drivers and Action against Land Degradation in Senegal. In: Nkonya, E., Mirzabaev, A. and von Braun, J., Eds., Economics of Land Degradation and Improvement—A Global Assessment for Sustainable Development, Springer International Publishing, Berlin, 577-608. https://doi.org/10.1007/978-3-319-19168-3_19
[9]
OSS (2015) Sénégal: Atlas des cartes d’occupation du so. Observatoire du Sahara et du Sahel (OSS).
[10]
Diop, K., Faye, C.A.T. and Sow, S.A. (2019) La Grande Niaye de Pikine, un espace humide à haute valeur agronomique au cœur de l’agglomération urbaine de Dakar: Analyse des enjeux socioéconomiques. Belgeo, 1, 1-19. https://doi.org/10.4000/belgeo.31319
[11]
Ndiaye, O., Diallo, A., Matty, F., Thiaw, A., Fall, R. and Guisse, A. (2012) Caractérisation des sols de la zone des Niayes de Pikine et de Saint Louis (Sénégal). International Journal of Biological and Chemical Sciences, 6, 519-528. https://doi.org/10.4314/ijbcs.v6i1.46
[12]
Diallo, M.D., Ngamb, T., Tine, A.K., Guisse, M., Ndiaye, O., Saleh, M.M., Diallo, A., Seck, S., Diop, A. and Guisse, A. (2015) Caractérisation agropédologique des sols de mboltime dans la zone des niayes (Sénégal). Agronomie Africaine, 12, 57-67.
[13]
Niang, S., Diop, T. and Faye, C.A.T. (2017) Dégradation chimique des sols dans les systèmes de production du Sénégal: Analyse des cas du Haut Saloum, du delta du Sénégal et du Gandiolais. Revue de géographie du Laboratoire Leïdi DTD, 17, 21.
[14]
Ado, M.N. (2017) Evaluation in Situ et en conditions contrôlées de la phytodésalinisation des Vertisols irrigués. Cas d’étude du périmètre rizicole de Kollo (Niger) dans la vallée du fleuve Niger. Thèse, Université Abdou moumouni de Niamey (Niger), Niamey.
[15]
Valles, V., Valles, A.-M. and Dosso, M. (1983) Irrigation des sols salés et doses de lessivage. Cah. ORSTOM (Office De La Recherche Scientifique et Technique D'outre-Mer), 20, 119-127.
[16]
Hillel, D. (2000) Salinity Management for Sustainable Irrigation: Integrating Science, Environment, and Economics. The World Bank, Washington DC. https://doi.org/10.1596/0-8213-4773-X
[17]
Mostafazadeh-Fard, B., Heidarpour, M., Aghakhani, A. and Feizi, M. (2008) Effects of Leaching on Soil Desalinization for Wheat Crop in an Arid Region. Plant, Soil and Environment, 54, 20-29. https://doi.org/10.17221/2780-PSE
[18]
Dai, Y., Senge, M., Ito, K., Onishi, T. and Yoshiyama, K. (2015) Experimental Evaluation of Irrigation Methods for Soil Desalinization. Paddy and Water Environment, 13, 159-165. https://doi.org/10.1007/s10333-014-0417-3
[19]
Sun, J., Kang, Y., Wan, S., Hu, W., Jiang, S. and Zhang, T. (2012) Soil Salinity Management with Drip Irrigation and Its Effects on Soil Hydraulic Properties in North China Coastal Saline Soils. Agricultural Water Management, 115, 10-19. https://doi.org/10.1016/j.agwat.2012.08.006
[20]
Mansouri, H., Mostafazadeh-Fard, B. and Neekabadi, A. (2014) The Effects of Different Levels of Irrigation Water Salinity and Leaching on the Amount and Distribution Pattern of Soil Salinity and Ions in an Arid Region. WIT Transactions on Ecology and the Environment, 185, 33-43. https://doi.org/10.2495/SI140041
[21]
Aubert, G. (1976) Les sols sodiques en Afrique du Nord. Annuaire de l’Institut Nationale Agronomie, El Harrach, 186-196.
[22]
Sarr, A. (2020) Technical and Economic Feasibility of Solar Pump Irrigation in the North-Niayes Region in Senegal. Collection “Master of Science”, No. 944.
[23]
Ayers, R.S. and Westcott, D.W. (1985) Water Quality for Agriculture (No. 29). 174.
[24]
USDA (2011) Soil Survey Laboratory Information Manual, Version 2.0 (No. 45) (Rebecca Burt).
[25]
Smith, J.L. and Doran, J.W. (1996) Measurement and Use of pH and Electrical Conductivity for Soil Quality Analysis. In: Doran, J.W. and Jones, A.J., Eds., SSSA Special Publications, Soil Science Society of America, Madison, 169-185. https://doi.org/10.2136/sssaspecpub49.c10
[26]
Zhang, Z.Y., Abuduwaili, J. and Yimit, H. (2014) The Occurrence, Sources and Spatial Characteristics of Soil Salt and Assessment of Soil Salinization Risk in Yanqi Basin, Northwest China. PLOS ONE, 9, e106079. https://doi.org/10.1371/journal.pone.0106079
[27]
Rahil, M., Hajjeh, H. and Qanadillo, A. (2013) Effect of Saline Water Application through Different Irrigation Intervals on Tomato Yield and Soil Properties. Open Journal of Soil Science, 3, 143-147. https://doi.org/10.4236/ojss.2013.33016
[28]
Masmoudi, A. (2011) Effet de la salinité de l’eau et de la fréquence d’irrigation sur le sol et la plante. Courrier du Savoir, 11, 61-69.
[29]
Douad, Y. and Halitim, A. (1994) Irrigation et salinisation au Sahara algérien. Sécheresse (Montrouge), 5, 151-160.
[30]
Feizi, M., Hajabbasi, M.A. and Mostafazadeh-Fard, B. (2010) Saline Irrigation Water Management Strategies for Better Yield of Safflower (Carthamus tinctorius L.) in an Arid Region. Australian Journal of Crop Science, 4, 408-414.
[31]
Ndiaye, O. (2009) Contribution à la caractérisation du sol et de la végétation des Niayes de Pikine et de Saint Louis au Sénégal. Mémoire DEA. 59.
[32]
Faye, B., Tine, D., Dethié, N., Cheikh, D., Faye, G. and Ndiaye, A. (2019) évolution des terres salées dans le nord de l’estuaire du Saloum (Sénégal). Géomorphologie: Relief, processus, environnement, 25, 81-90. https://doi.org/10.4000/geomorphologie.13125
[33]
Aguiar, L. (2008) Impact de la variabilité climatique récente sur les écosystèmes des niayes du Sénégal entre 1950 et 2004. Thèse, Université du Québec à Montréal, Québec.
[34]
Grünberger, O. (2015) Dynamiques salines des sols des milieux arides et semi-arides. 133.
[35]
Yadav, S., Singh, N. and Yadav, B. (1998) Effect of Different Levels of Soil Salinity on Growth and Yield of Onion (Allium cepa). Indian Journal of Horticulture, 55, 243-247.
[36]
Saidi, D., Le Bissonnais, Y., Duval, O., Daoud, Y. and Halitim, A. (2004) Effet du Sodium échangeable et de la concentration saline sur les propriétés physiques des sols de la plaine de Cheliff (Algérie). Etude et Gestion des Sols, 11, 137-148.
[37]
Taalab, A.S., Ageeb, G.W., Siam, H.S. and Mahmoud, S.A. (2019) Some Characteristics of Calcareous Soils. A Review. Middle East Journal of Agriculture, 8, 96-105.
[38]
Warrence, N.J., Bauder, J.W. and Pearson, K.E. (2003) Basics of Salinity and Sodicity Effects on Soil Physical Properties. http://waterquality.montana.edu/energy/cbm/background/soil-prop.html
[39]
Hanson, B.R., Grattan, S.R. and Fulton, A. (2006) Agricultural Salinity and Drainage. Regents of the University of California, Oakland, 180.
[40]
Ouedraogo, F. (2008) Etude des transferts d’eau à l’interface sol-atmoshpère. Cas d’un sol du Burkina Faso à faible teneur en eau [Mécanique, Génie Mécanique, Génie Civil]. Universite Montpellier, Montpellier, 2.
