Indian Journal of Agricultural Research

SCOPUSWeb of Science
  • Year: 2021
  • Volume: 55
  • Issue: 6

Monitoring the influence of anthropogenic pollution on the quality of irrigation water for market gardening in Yamoussoukro, Cote d'Ivoire

  • Author:
  • Tchimonbie Messikely Anoman*, Don-Rodrigue Rosin Bi Voko1, Dabe Doga2, Aka Niangoran Marie Stephanie Kouadio1, Konan Samuel Ahoudjo3, Adolphe Zeze
  • Total Page Count: 6
  • Page Number: 715 to 720

UMRI Sciences Agronomiques et Genie Rural, Institut National Polytechnique Felix Houphouët-Boigny (INP-HB), BP 1313, Yamoussoukro, Cote d'Ivoire

1Departement de Biochimie-Microbiologie, Universite Jean Lorougnon Guede, 12 BP V 25, Daloa, Cote d'Ivoire

2Centre National de Recherche Agronomique de Cote d'Ivoire (CNRA), Adiopodoume, Km 17 Route de Dabou, 01 BP 1740, Abidjan01

3UMR Marches, Organisations, Institutions et Strategies d'Acteurs (MOISA), Montpellier SupAgro, Campus de La Gaillarde, 34060Montpellier Cedex02, France

Abstract

The microbiological quality of three vegetable crops (cabbages, carrots, lettuces) and their irrigation water from the lake system of the city of Yamoussoukro were studied. The pollution indicator used is Escherichia coli (E. coli), of the thermotolerant coliform family.

During the period 2017-2019, in four dry and four wet seasons, a total of 744 water samples and 13392 vegetable samples were collected in five (5) lakes belonging to the lake system. The lakes were selected because of their position in the system. The E. coli loads were evaluated after isolation on a specific COMPASS ECC Agar and confirmed with polymerase chain reaction (PCR) and the physicochemical parameters of the lakes, evaluated according to their respective ISO standards.

In irrigation waters, bacterial loads and physico-chemical parameters generally have evolved from the upstream lakes to those downstream of the lake system (from lake A to lake E). Values were higher during the rainy seasons. E. coli loads on vegetables were strongly correlated with those of irrigation water, especially in dry seasons. Spearman's correlations revealed significant correlations between turbidity, DOC and bacterial loads. The risk of bacterial transmission between lake waters and surrounding vegetables is proven.

Keywords

Lakes waters, Sanitary quality, Vegetable crops