Quality Liquid Organic Fertilizer with Variant C/N Ratio based on Cow Urine and Cichorium Intybus L.

Abstract

During the composting process, total carbon and nitrogen must be fulfilled calculating C/N ratio. Carbon and nitrogen will be used microorganisme as a source of energy and complement body cells. This study aims to make cow urine a POC that can be an alternative organic material and can improve the quality nutrient. Cow urine and chicory root used to make POC were made using a fermentation methode 51 days, with four treatments where each treatment was repeated five times with C/N 20, C/N 25, C/N 30, and C/N 35. The parameters in this study were nitrogen (N), phosphorus, potassium, and pH. Process this research uses kjedhal, spectrophotometry, gravimetry, and pH. The results showed that the analysis of N, P, K concentrations at the C/N ratios 20, 25, 30, and 35 is 1,75%, 1,85%, 1,95%, and 2,11. Based on analysis, highest NPK was found in C/N 35 spacifically N 1,37%, P 0,18%, and K 0,55% with a total of 2,11%. Nutrient POC is influenced by materials and the decomposing activity of microorganisms. Carbon and nitrogen are important factors in improving nutrient quality. The optimal C/N ratio for composing is 30-40. The pH with the best treatment is C/N 20, which is 6.49. The pH value is influenced by the activity of microorganisms decomposing organic materials.