| dc.description.abstract | One of the activities to utilize waste produced during the processing of
coffee plantation products such as coffee husks can be done through composting.
Coffee husk waste is difficult to decompose because it contains lignin and
cellulose so that decomposers are needed to accelerate the decomposition process
of coffee husk waste. This research aims to determine cellulolytic fungi from oil
palm trunks that have the potential to decompose coffee husk waste. The isolates
used in this research came from fallen oil palm trunks which are the collection of
the Soil Biology Laboratory, Faculty of Agriculture, University of North Sumatra
with isolate codes BKS-TAG 1, BKS-TAG 2, BKS-TAG 3, BKS-TAG 4, BKS-TAG
5, BKS-TAG 6 and BKS-TAG 7. Composting was carried out for 90 days. The
parameters measured in this study included water content, C/N ratio, temperature
and total fungal population. This research used a completely randomized design
with the treatment of administering several fungal isolates and was repeated 3
times. The results showed that the most potential fungal isolate in helping to
accelerate the decomposition of coffee skin waste was the BKS-TAG 6 isolate with
C-organic content of 53.50%, total N content of 1.15%, C/N ratio of 47.48, and
water content of 71.64%. Without the administration of fungal isolates or
controls, C-organic content of 53.06%, total N content of 0.98%, C/N ratio of
54.13, and water content of 57.67%. | en_US |
