Increasing issue of returning to nature, the presence of organic fertilizer is one of the things required in agriculture sector. The presence of the liquid organic fertilizer, it is expected to have a positive impact on plants and soil. Moreover, in the manufacturing process, it was utilizing wastes. The liquid fertilizer was made by mixing waste from micro-businesses that produce a porridge (old coconut water) and side product of the sugar factory (molasses). Seven litter solutions from the liquid were mixed using a bioreactor equipped with impeller for 8 incubation days. The isolated microbes were inserted with initial number of 1012 using counting chamber method. As a phosphate source, the phosphate rock was implemented into reactor. Every 4 days, the samples were taken and analysed for knowing the concentration of NPK and C components. Three consortium microbe variables were carried out for making the fertilizer where the source of microorganisms from enrichment cultures + old coconut water + molasses (EOM); soil + old coconut water + molasses (SOM); and only old coconut water + molasses (OM). The highest (%) of N, P, K and C components was detected at 0.09; 0.04; 10.5 and 1.74, respectively achieved by the EOM after 8 day of incubation period. The bio-fertilizer was applied into the paddy test plants with a hydroponic system.

Original languageEnglish
Article number012007
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 17 Jun 2020
Event2019 International Conference on Chemical Engineering and Applied Sciences, ICChEAS 2019 - Banda Aceh, Indonesia
Duration: 23 Oct 201924 Oct 2019


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