The Application of Mixed Arbuscular Mycorrhizal Fungi Inoculant to Peanut and Soybean
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Glomus sp.4, as arbuscular mycorrhizal AM fungi, was a collection originally gathered from soil in Bogor and had been introduced succesfullly to fast-growing legumes of Albirfa procera, Paraserianthes falcataria and Plerocarpus indicus seedlings. To determine the influence of AM fungi inoculation to the plant growth, the experiment waa set up as follow, a. Glomus sp.4 was mixed with 6. etunketum, 6. manileotis and G. microagregatum + Acaulospora spinose, and inoculated separately as A, B, and C soil culture inoculant; b. peanut and soybean were inoculated and planted as pot experiment in mixed medium of soil, compost and sand 2:1:1; c. for controlling treatments the plants were not inoculated and the other one were planted at medium which was amended with 100 g/kg TSP. As plant growth, AM fungi colonies of both plants roots increased. Fungi infection were founded higher in soybean 50-90% compared to peanut infection 40-70%. Peanut shoot dryweight 15.6 g and index of seed over shell 1.01 which were harvested 53 days after planting DAP showed value as caused by B inoculant. Soybean plants at 45 DAP were significantly different in shoot dry weight 2.08 g and seed weight plant' 4.12 g compared with control, as caused of C inoculant treatment. Phosphorus content in dry shoot of peanut treated with B inoculant was 0.3%, and soybean which C inoculant was 0.4%.