Paper Title
THE EFFECT OF DIFFERENCES IN BIO-ACTIVATORS AND FERMENTATION TIME ON THE PROPERTIES OF LIQUID ORGANIC FERTILIZERS BASED ON LOCAL RABBIT’S URINE WASTE

Abstract
Local rabbits are one type of livestock that is kept by many people, especially in rural areas. Local rabbits produce liquid waste in the form of urine. This waste causes environmental problems so that technology is needed for its processing. Urine is rich in organic compounds which are used as raw materials in the production of liquid organic fertilizer (Lof). The quality of Lof is influenced by the availability of substrate of microorganism and the fermentation time. This study aims to evaluate the effect of different substrate and fermentation time on Lof properties using local rabbit’s urine (Ru) as raw material. The research was carried out in an experimental laboratory. A total of three types of substrate have been applied in this study, namely; 1) bioactivator animal substrate (BAsb), 2) bioactivator plant substrate (BPsb), 3) Commercial microorganism (C-mic) (control). A total of two fermentation times have been applied, namely: 1) 2 weeks and 2) 4 weeks. The data were processed statistically using a completely randomized design (CRD) with factorial patterns. The results showed that the difference in bioactivator substrate had a significant effect (p<0.05) on the N-organic, C/N ratio, P2O5 and K2O content while pH and C-organic had no significant effect (p>0.05). The difference in fermentation time had a significant effect (p<0.05) on the levels of C-organic, N-organic and the C/N ratio, while pH had no significant effect (p>0.05). There was a significant interaction (p<0.05) between the type of substrate and the fermentation time at the LoF-Ru. N-organic content made from local rabbit. Fermentation times of up to 4 weeks can be applied in the Lof-Ru production process with BAsb or BPsb. Keywords - Bioactivator, fermentation, liquid organic fertilizer, urine waste, local rabbits