Open AccessImpact of urban gardening in equatorial zone on soils and metal transfer to vegetables
Author(s) -
Aubin Jean Ondo,
Pascale Prudent,
C. Massiani,
Menye Richard Biyogo,
M. Domeizel,
Jacques Rabier,
François Eba
Publication year - 2013
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc120915116o
Subject(s) - amaranth , soil water , leafy vegetables , cadmium , food chain , environmental science , nutrient , agriculture , agronomy , metal , environmental chemistry , chemistry , horticulture , biology , ecology , soil science , organic chemistry
International audienceThis study was aimed at assessing the impact of urban agriculture on physicochemical properties of the soil and the metal uptake by some leafy vegetables cultivated in urban soils of Libreville, Gabon. Cultivated and uncultivated topsoil and vegetable samples were collected from two urban garden sites, and analyzed. The results showed that there was strong acidification and a decrease in the concentrations of nutrients and metals in soils due of agricultural practices. The metal transfer to plants was important, with the exception of iron. The non-essential metals cadmium and lead were not detectable in the plant tissues. Amaranth accumulated more metals than other vegetables. Amaranth and Roselle were vegetables that preferentially concentrated metals in their leaves and could, therefore, be used for metal supplementation in the food chain