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Journal of Environmental Hydrology
ISSN 1058-3912 |
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Electronic Journal of the International Association for
Environmental Hydrology
JEH Volume 20 (2012), Paper 16 Posted December 12, 2012 PESTICIDES RISK ASSESSMENT BY PIRI FOR SURFACE WATER IN SUGAR CANE CULTIVATION IN BURKINA FASO
Richard Ouedraogo1,2 2University of Ouagadougou, Health Sciences Faculty, Ouagadougou, Burkina Faso 3University of Ouagadougou, Chemistry department, Ouagadougou, Burkina Faso ABSTRACT One consequence of land use for industrial sugar cane production by the SN-SOSUCO society (Nouvelle Société Sucrière de la Comoé) in the South Western part of Burkina Faso is the application of different pesticides. In our continued work on evaluating the contamination risk of pesticides to water resources, this study aimed to assess the risk of surface water contamination during the season 2007-2008. The risk was evaluated using the Pesticide Impact Rating Index (PIRI) software developed by CSIRO Australia, with the assumption of three scenarios taking into account soil organic matter content and the presence of a buffer zone. The results show that of the 13 pesticides applied, 4 (acetochlor, metribuzin, MSMA, terbufos) had very high potential and 4 (glyphosate, pendimethalin, MCPA, diuron) had high potential to contaminate surface water under actual usage conditions. Likewise, chlorimuron-ethyl, carbofuran, trichlopyr and pichloram had medium potential and triadimefon had very low pollution potential. The risk of contamination is reduced by the organic carbon content of soil and the distance from the pesticides application area to surface water. Promotion of better agricultural practices and the planting of a buffer zone of trees are required in order to prevent surface water pollution in the area. Reference: Ouedraogo, R., S. Pare, A.M. Toe, and I.P. Guissou. 2012. Pesticides risk assessment by PIRI for surface water in sugar cane cultivation in Burkina Faso. Journal of Environmental Hydrology, Vol. 20, Paper 16. CONTACT: Richard Ouedraogo IRSS Regional Office 01 BP 545 Bobo-Dioulasso 01 Burkina Faso E-mail: richardoued@gmail.com |
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