THE FORMULATION OF SOLID BIOFERTILIZER FROM RHIZOSPHERE FUNGI AND OIL PALM EMPTY FRUIT BUNCH

• Main Author: SETYO ADIGUNA (NIM : 21114017), GALIH
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27444
• Institution: Institut Teknologi Bandung

<p align="justify">Empty fruit bunch (EFB) from oil palm have contains 45.95% cellulose, 22.84% hemycellulose, 16.49% lignin, 2.41% oil, and ash 1.23%. The utilization of empty fruit bunch wastes is still very imited as a source of potassium after inceneration. The burning process of EFB in the incinerator can cause air pollution because it produces fly ash. To reduce environmental pollution, it is necessary to handle the EFB, for example as biofertilizer component. FEB will decompose naturally in the field, however it takes very long time. The decomposition process can be hastened by using lignocellulolitic fungi. This situation inspire this research with the main purpose is to develop a solid biofertilizer by using rhizosfir fungi and FEB as the raw material. The method in this research using experimental method. The rhizosphere fungi were selected based on their capability on degrading celullose, dissolving phosphate, and antagonizing Ganoderma boninense. There were three rhizosphere fungi selected out of 35 isolates which meet the aforementioned criteria. L1 isolate has the highest ability to degrade cellulose with a clear zone diameter of 7.3 cm. Selection based on the ability of dissolving phosphate, isolate E1 has the highest ability, while isolate E2 has the highest ability in inhibiting the growth of G. Boninense. Optimal results on plant growth test was achieved by treatment T1 . Based on ITS DNA analysis, isolate T1 is identified as Talaromyces pinophilus (100 %), E2 as Trichoderma viride (100 %), and L1 as Acremonium cellulolyticus (100 %)<p align="justify">