Cadmium accumulation in maize monoculture and intercropping with six legume species

This study investigated the effect of intercropping on the accumulation of cadmium (Cd) by maize plants (Zea mays L. var. Guangtian-2). Maize was intercropped with alfalfa, cowpea, garden pea, kidney bean, peanut, and soybean. The results showed that most legumes substantially enhanced Cd uptake by maize. The highest Cd uptake by both maize and peanut in one pot was 176, 282, 1044, and 1775 μg pot-1 on day 40, 55, 75, and 95, respectively. The results suggest that legumes caused a greater effect on Cd concentration in maize and peanut was a potential intercrop for enhancing Cd extraction from soil. © 2013 Copyright Taylor and Francis Group, LLC.