PELARUTAN FOSFAT DARI BATUAN FOSFAT OLEH Aspergillus niger YANG DIFORMULASIKAN DALAM BIOFILM BAKTERIJAMUR BERSAMA Azotobacter spp
| Main Authors: | , CHAHYANING ARDHIANI, , Donny Widianto, Ph. D. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/132028/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72544 |
Daftar Isi:
- Phosphorus is one of the major macro elemen for plant growth. Rock phosphate is one of phosphorus source. Rock phosphate has low solubility that should be added a solvent or phosphate solubilizing microorganisms. One of phosphate solubilizing microorganism is Aspergillus niger. The fungus Aspergillus niger when added with nonsymbiotic nitrogen-fixing bacteria Azotobacter spp. in the forming of fungal bacterial biofilms can increased phosphate solubilizing. This research was aimed to determine the phosphate solubilizing ability of fungal bacterial biofilms formed by Aspergillus niger and Azotobacter spp.to dissolve rock phosphate. Eighteen combination of fungal bacterial biofilm and mixed culture were examined for their ability to dissolve phosphate in the pikovskaya broth medium with rock phosphate as phosphate source. Best combination from that examination was examined for the ability to dissolve phosphate in the ultisol, latosol and regosol soils were added with rock phosphate and mix organic matter with 69,5:30:0,5 equivalent. Examination in broth medium showed combination of Aspergillus niger 2.2 and Azotobacter sp. da22b had highest ability to solubilize phosphate achieving an average 95,36 ppm while the lowest value in the combination Aspergillus carbonarius and Azotobacter sp. h7b with average 10,90 ppm. Combination of Aspergillus niger 2.2 and Azotobacter sp. da22b were examined their phosphate solubilizing ability on three types of soils with highest yield in ultisol soil. Both combination biofilms and mixed culture are known better to dissolve phosphate from rock phosphate than planktonic forming. Key words: phosphorus, rock phosphate, Aspergillus niger, Azotobacter spp., fungal bacterial biofilms