THE EFFECT OF ORGANIC MEDIUM USE IN FORMULATION OF TRICHODERMA HARZIANUM AND PLEUROTUS OSTREATUS IN VIABILITY AND DECOMPOSITION OF CACAO POD HUSKS WASTE

Abstract

Biomass waste can be processed into high nutritious organic fertilizer and improve soil structure. This study aims to
assess viability of Trichoderma harzianum TH03 and Pleurotus ostreatus PO2 isolates that propagated in different
growth mediums: rice, corn and sawdust medium, followed by formulation in powder form and stored in different
packaging after 2-24 weeks of storage periods under room temperature. This study used Completely Randomized
Design with two factors : mediums and packaging types with three replications. The highest viability was observed
in T. harzianum TH03 derived from rice medium and P. ostreatus PO2 from corn medium. Aluminum foil and
plastic bag provided highest viability on P. ostreatus PO2 and T. harzianum TH03. P. ostreatus PO2 and T.
harzianum TH03 treatment was appropriate with mature compost criteria. The lowest C/N content was found in
cacao pod husk waste treated with T. harzianum TH03 (4.85%) whereas the control (23.20%). The nutrient of the
compost treated with P. ostreatus PO2 is higher than control.