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Inceptisol soils in karst areas have problems with low availability of phosphate elements because it is absorbed by Ca, as a result phosphate is not available to plants. One of the efforts to help overcome these problems is through the use of soil microbes and Arbuscular Mycorrhizal Fungi (AMF) which can be associated with corn plants. This study aims to determine the effect of indigenous microbes and arbuscular mycorrhizae on phosphate nutrients. The experiment used a nested design with three factors. The first factor is land use consisting of inceptisols in the fields and inceptisols in the forest. The second factor is soil sterilization consisting of sterile and non-sterile. The third factor is mycorrhizal consisting of non-mycorrhizal and mycorrhizal inoculation. The results showed that the same land use was inoculated with mycorrhizal bacteria in one group, different from the bacteria in the rhizosphere without mycorrhizal inoculation. Treatment interactions had a significant effect on total P, potential P, and available P, available Ca, root infection, and total glomalin. Inceptisols from non-sterile forests with mycorrhizal inoculations showed the highest phosphate content.
Keywords: Arbuscular Mycorrhizae, Corn, Inceptisol, Microbes, Phosphate.