| Summary: | Aluminum is one of heavy metals and its availability is correlated with low soil pH, such as in acidic soil as well as post
mining soil and become limiting factors for plant growth. MycoSilvi is a biofertilizer inoculant product containing arbuscular
mycorrhizal fungi enriched with Mycorrhizal Helper Bacteria’s (MHBs) designed for improving plant growth on post-mining
soil media with low pH and high aluminum content. This study was conducted to determine the potential use of three variants
of MycoSilvi, both single or in combination with soil ameliorant to enhance Albizia chinensis (Osbeck) Merrill and Pongamia
pinnata (L.) Pierre growth. This study was conducted by randomized complete design with factorial scheme in a greenhouse
for 4 months. The first factor consisted of four different levels based on MycoSilvi (M) inoculation: control (M0); MycoSilvi
variant 1 (M1), MycoSilvi variant 2 (M2) and MycoSilvi variant 3 (M3). The second factor consisted of four levels based
on the addition of lime and compost to soil medium: control (L0C0), addition of lime (L1C0), addition of compost (L0C1)
and addition of lime and compost (L1C1). Data was analyzed using analysis of variance (ANOVA). Total chlorophyll content
as indicated by leaf greenness index, height, steam diameter, biomass, root colonization and P accumulation on both plant
species were observed after 12 weeks of planting. The results showed that the MycoSilvi inoculation differently colonized
the roots and increased P uptake, leaf greenness index and growth of both plants species. The addition of lime and compost
increased the mycorrhizal roots colonization, P uptake, leaf greenness index and plant growth of both plants’ species. The
best result was obtained from the combination treatment of MycoSilvi variant 3, lime and compost.
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