<![CDATA[Tailing is one of the most abundant wastes from gold mining process. This material usually has a high concentration of some heavy metal such as Pb and Fe, insufficient of some essential elements, and a low caption exchange capacity, organic mater and prohibit microorganism growth. In order to improve rehabilitation tailing area by revegetation, utilization of plant root symbiotic organism, arbuscular mycorrhiza fungi (AMF), have been introduced. Arbuscular mycorrhiza fungi, however, need to be support to encourage its colonization to host plant in tailing media. The objectives of this research were to determine the effect of activated compost application on tailing media to spora density and colonization of arbuscular mycorrhiza on host plant (Melia azedarach seedling) as well as its MEI. Three factors complete randomised experimental design was conducted under green house conditions and DMR Test was used to analyse of the effect of tailing, compost and kinds of AM treatment. Percent of AM colonization to mindi seedling root, AM spore number in media, and Mycorrhiza inoculation effect were measured in this experiment. Application of activated compost on tailing media increased colonization of NPI 126 (Glomus etunicatum) up to 4 times. This treatment also increased spore number and improve colonization of local AM fungi. The positif of Mycorrhiza inoculation effect (MIE) value was found on tailing media and mix media without actif compost. Active a Compost application is potential to improve the AMF role in order to increase the plant growth quality.]]>
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