Pengaruh Kombinasi Pupuk Hayati Endomikoriza, Trichoderma spp., dan Pupuk Kompos terhadap Pertumbuhan Bibit Sengon (Paraserianthes falcataria (L.) Nielsen) (Effect of Bio-Fertilizer, Endomicorrhiza, Trichoderma spp., and Compost Combination on the Growth of Sengon Seedlings (Paraserianthes falcatari

Sengon (Paraserianthes falcataria (L.) Nielsen) is a tree species commonly planted in community forests and managed using an agroforestry system. In order to grow a high-quality sengon tree, high-quality seeds are essentials. In addition, providing biofertilizers and organic fertilizers during the nursery phase is necessary. This study aimed to determine the effect of Trichoderma spp., endomycorrhizae, and compost fertilizer combination on the growth of sengon (Paraserianthes falcataria (L.) Nielsen) seeds and to determine the optimum ratio to increase the growth of sengon seeds. The research was performed in the Plant Taxonomy Laboratory (Mycology) and Unda Anyar Watershed and Protected Forest Management Office in Bali. The research was performed with six treatments, namely: A (sterile or untreated soil), B (sterile soil and 10 g of compost), C (10 ml Trichoderma spp.), D (10 ml Trichoderma spp., 100 endomycorrhizal spores, and 10 g compost), E (10 ml Trichoderma spp., 150 endomycorrhizal spores, and 10 g compost), and F (10 ml Trichoderma spp., 200 endomycorrhizal spores, and 10 g compost). This study consisted of five groups with three sub-unit plants. The results showed that the combination of Trichoderma spp., endomycorrhizae, and compost fertilizer significantly increased plant height, amount of stem branches, fresh weight and dry weight of plant, and dry weight of root compared to control. However, the effect on the root fresh weight was not significant. A combination of 10 ml Trichoderma spp., 150 endomycorrhizal spores, and 10 g of compost fertilizer was the most optimal and effective in increasing the growth of sengon seeds. Keywords: mycorrhiza, sengon seedlings, woody plants