Pengaruh Mikoriza Arbuskular dalam Meningkatkan Kadar Pb dan Cd Mucuna pruriens pada Tanah yang Dicemari Logam Berat

Abstract

Metal Pb and Cd are harmful pollutants and not an essential element for plants. Arbuscular mycorrhiza (MA) may be used as a bioremediation agent in increasing Pb and Cd metal uptake in addition to enhancing plant resistance to the metal. The objective of this research was to observe the effects of arbuscularmycorrhiza toincrease Pb and Cd level of  Mucuna pruriens plants that grow in the soil contaminated by Pb and Cd. This research was done at screen house of Agriculture Faculty, University of North Sumatra, Medan. The experiment design was arranged in factorial randomized block design, three replications with two factors: first factor was inoculation arbuscular mycorrhiza(uninoculated and inoculated arbuscular mycorrhiza) and second factor was heavy metal treatments (without heavy metal, 400 ppm Pb, 600 ppm Pb, 800 ppm Pb, 400 ppm Pb + 70 ppm Cd and 600 ppm Pb + 105 ppm Cd). Results of the experiment showed that inoculation of arbuscular mycorrhiza increase Pb and Cd level of M. pruriens. Arbuscular mycorrhiza increased Cd level of shoot and root significantly. Pb level of shoot and root was highest in 800 ppm Pb and 600 ppm Pb treatment. Cd levels of shoot and root was highest in 600 ppm Pb + 105 ppm Cd treatment.