Fertilizer is a material that can provide nutrients for plants. Organic fertilizers are fertilizers composed of living creatures that are processed through decomposition by decomposers, such as weathering the remains of plants, animals, and humans. The purpose of this research is to see the effect of fermentation time and influence of EM4 composition on nutrient quality in solid organic fertilizer. The results obtained based on the length of time of fermentation and Volume Efective Microorganism 4 EM4 then obtained the best results at 60 ml EM4 volume and 16th days fermentation time with 0.90% nitrogen content, 0.93% phosphorus, and potassium levels of 1.48%. The longer and more EM4 volume the more nutrients it gets.
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