Macronutrients Level and Total of Bacteria from Combination of Banana Stems and Coconut Fibers with MA-11 As Bioactivator

Abstract

The purposes of this research were to determine the maximum macronutrients content of C, N, P, K and the total of bacteria from combination of banana (Musa paradisiaca) stems, and coconut fibers that is using local microorganism MA-11 as a bioactivator. The combination includes Combination 1 (K1): 250 grams of banana stems and 250 grams of coconut fiber; Combination 2 (K2): 375 grams of banana stems and 125 grams of coconut fiber; Combination 3 (K3): 125 grams of banana stem and 375 grams of coconut fiber. Each combination added 1 liter of coconut water, 125 grams of sugar and 125 ml of MOL MA-11 which was fermented for 7 days. The contents of C, P and K in liquid organic fertilizer were determined by using a spectrophotometer, while N levels were determined using semi micro kjeldahl. The number of bacteria in each combination is calculated using the total count method. The results showed that the higest of total Carbon (C) was found in combination 1 (K1) of liquid organic fertilizer, namely 14.35%. The maximum macronutrients N, P and K are found in the combination 3 (K3), respectively 2.48 % (N), 0.66 % (P) and 2.19 % (K). The highest total count of bacterial was found in combination 3 (K3) was 8.2 x 107 cfu/ml.