Asian Journal of Soil Science and Plant Nutrition, 2456-9682,Vol.: 2, Issue.: 4
Properties and Sensibility to Physical Degradation of Soils under Cotton Cropping in Korola Watershed, Sikasso Region, Mali
Habibatou Sangaré1, Drissa Diallo1* and Issa Kassogué2 1Unité des Sciences du Sol, DER STA, IPR/IFRA de Katibougou, BP 6, Koulikoro, Mali. 2ICRISAT- Regional Hub West and Central Africa, BP 320, Bamako, Mali.
Habibatou Sangaré1, Drissa Diallo1* and Issa Kassogué2
1Unité des Sciences du Sol, DER STA, IPR/IFRA de Katibougou, BP 6, Koulikoro, Mali.
2ICRISAT- Regional Hub West and Central Africa, BP 320, Bamako, Mali.
(1) Darmawan, Associate Professor, Department of Soil Science, Faculty of Agriculture, Andalas University, West Sumatra, Indonesia.
(2) Prabhakar Tamboli, Adjunct Professor & Director International Training Program, Department of Environmental Science & Technology, University of Maryland, College Park. Maryland 20742, USA.
(3) Rusu Teodor, Professor, Agrotechnics, Experimental Techniques and Rural Development, Department of Technical and Soil Sciences, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Romania.
(1) Diony Alves Reis, Federal University of Western Bahia, Federal University of Pelotas, Brazil.
(2) Miguel Aguilar Cortes, Universidad Autonoma Del Estado De Morelos, Mexico.
Complete Peer review History: http://www.sciencedomain.org/review-history/23206
Soil physical, chemical and biological degradation is a global problem, which must be monitored by each country in order to have better decision-making for agriculture and environment. In this case, study has been undertaken in Mali at agricultural watershed scale. The present paper is related to Korola watershed (1245.3 km2). Here, and in the major part of Sikasso region, cotton cultivation for industry was introduced during the 1960s. Soil degradation is considered as a handicap to the improvement of cotton production, a general problem in Western and Central Africa. A deeper understanding of soils and their sensibility to degradation is needed in order to choose better strategies to improve their management and productivity. The methodology used in the present study includes soil profile descriptions, particle size analyzes, carbon, nitrogen and pH measurement, the use of pedotransfer functions to assess soil structure and their sensitivity to erosion. In Korola watershed, 3 soil types (soil1, soil2, soil3) are selected by farmers for cotton cropping. Soil1 (Guinin dugukolo) and soil2 (Mura dugukolo) have a high amount in silt, while soil3 (Ciencien dugukolo) is rich in sand. All these soils are poor in organic matter (≤ 1%) and present a high risk of acidification. The index of battance (IB) of surface horizons (respectively 15.9, 11.0 and 15.4 for the three types soils) indicate a unfavorable structure. The destructuration index (St) indicate a high sensibility to soil erosion. The values of soil erodibility index (K) are respectively 0.44; 0.55 and 0.09 for the three types of soils.
Watershed; cotton; soil physical degradation; Bagoe River; Sikasso Region; Mali.
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