A R T I C L E I N F O A B S T R A C T
Article history:
Received: September 26, 2017
Revised: November 08, 2017
Accepted: December 20, 2017
Available online: December 25,
2017
The quality of the plant production in periurban agriculture is subjected to question
given the potential contamination of soils that can affect the crops. The levels of
contamination of soils and vegetables by Metallic trace elements (MTE) as copper
(Cu), zinc (Zn), cadmium (Cd) and lead (Pb) in the district of Abidjan, have been
evaluated. Multi-sites survey of cropping areas of sweet potato and Hibiscus was
conducted in three municipalities in Abidjan (Port-Bouët, Yopougon and Bingerville)
in relation to the intensity of industrial and commercial activities. The site
of Bingerville has been used as the reference site referring to the low activities. Soil
samples (in 0-20 cm and 20 - 40 cm), combined with that of plants (leaf, stem, and
root), and water were collected, transported in laboratory for analysis. The total
amounts of MTE in soil, as well as the different fractions extracted were determined in
addition to the respective concentration in plants (Hibiscus and Sweet potato). Toxic
level of Pb (< 8 mgkg
-1
) was observed in the plant organs collected at Port-Bouët site
indifferently to crops while lowest content of Pb (35.5 mgkg
-1
) was accounting for the
soil of Yopougon (39.8 mgkg
-1
). A neutral pH of the soil has been considered more
favorable to the contamination of plants in Pb on the polluted sites somewhat differing
for extractable fractions. The acidity and small width of leaf as observed for Hibiscus,
were identified as the control factors of crop contamination in periurban
agroecosystems prone to Pb pollution. To strengthen the consistency of the knowledge,
studies of the interaction between Pb and Zn as well as the translocation of Pb in the
plants to tubers are suggested in the tropical ecosystems.
© 2017 Guety et al. All rights reserved.
Keywords:
Trace metal
Mobility
Bioavailability
Remediation
Phytodisponibilité
Côte d'Ivoire
*
Corresponding Author;
E. Mail: thierryguety@yahoo.fr
Introduction
n the area of wet drill bit of West Africa,
the urban population is very important
compared to that of the rural population
(Drechsel et al, 1999). Approximately 2/3
of the population will be living representing a huge
challenge for the security of the food supplies
(Maxwell, 2000). Hence, there is emergence of new
informal economies (United Nations, DESA, 2006)
among which, periurban agriculture is major
regarding to the additional income for populations.
Indeed, the often precarious lifestyle of a fringe of
the urban population imposes upon him the return to
agriculture in the vicinities of the cities for its
subsistence and to generate income (FAO, 2008).
The urban agriculture or periurban areas, according
to Moustier et al. ( 2004), refers to the forms of
agricultures coproduced by the cities, that they are
located on the inside of the city or in the urban
I
Advances in Agricultural Science
Volume 5 (2017), Issue 04, 13-31
Journal homepage: www.aaasjournal.org
ISSN: 2588-3801
Metallic Trace Elements (MTE) in soils and plant organs of some
crop in periurban of Abidjan (Ivory Coast)
Thierry Guety
1*
, Emile B. Bolou Bi
2
, Bongoua-Devisme Affi Jeanne
2
, Brahima Kone
1
1
University Felix Houphouet Boigny, UFR STRM, Department of Soil Science, LIEVASOL, Côte d'Ivoire.
2
University Felix Houphouet Boigny, UFR STRM, Department of Soil Science, LIFBIOS, Côte d'Ivoire.
Research Article Open Access