Efektivitas Fungi Mikoriza Arbuskular (FMA) dan Akar Wangi (Vetiveria Zizanoides) dalam Kegiatan Bioremediasi pada Media Tercemar Timbal (Pb)

Abstract

Soil that has been contaminated with heavy metals such as lead (Pb) needs to be repaired to improve soil quality. One way that can be done to reduce the concentration of lead is to carry out bioremediation using vetiver (Vetiveria zizanioides) and mycorrhizae. Vetiver (Vetiveria zizanioides) is herbaceous plant that is tolerant to Pb. On the other side, mycorrhizae can increase plant tolerance to toxic metals such as lead (Pb). The aim of this research was to analyze the effectiveness of arbuscular mycorrhizal fungi (AMF) in reducing soil lead (Pb) levels at various concentrations. The results showed that the interaction effect of mycorrhizal dose and lead concentration had no significant effect on all research parameters, mycorrhizal dose treatment had a significant effect on the parameters of height gain, plant dry weight, root crown ratio and percent root colonization, while lead concentration treatment had a significant effect on the parameters of number of tillers, root crown ratio and soil pH. The results of the DMRT further test showed that 40 g of mycorrhizae treatment gave the highest average percentage of root colonization, which was 2.47, where mycorrhizal activity was found in the form of hyphae, while the highest decrease in lead levels in the soil was found in the 600 mg/kg lead treatment, which was 93. 71%.