| dc.description.abstract | EVA SERTA P SITORUS: Isolation of Potential Mushroom Phosphates Solvents
in the Village Land forest fire Tongging Karo, under the guidance of Dr.
DELVIAN SP, MP and Dr. DENI ELFIATI SP, MP.
The research was carried out to isolate, examine and identify potential
phosphate solubilizing fungi (PSF) to solubilize insoluble phosphate from of the
former forest fire Tongging village, Karo. Samples taken from fifty points in a zig zag at 0-20 cm depth around rhizosfir. The chemical analyze properties of the
former forest fire soils conducted in North Sumatra Assessment Institute for
Agricultural Technology while the activities of isolation, and identification of
potential trials conducted at the Laboratory of Soil Biology Agroekoteknologi
Studies Program Faculty of Agriculture, University of North Sumatra. Isolation
using Pikovskaya media with the source fosfat from Ca3(PO4)2, whereas in the
potential test media using Ca3(PO4)2, AlPO4, FePO4 dan Rock Phosphate (RP). as
source of insoluble phosphate. Evaluate the potential JPF qualitatively by
measuring the diameter of holozone extensive use of the dilution index. JPF
potential measurements quantitatively by measuring levels of dissolved phosphate
with Bray-II method.
The results obtained 7 isolates of isolation of pure PSF. The next test
conducted on the potential of isolates obtained. Largest diameter of 2,463cm
holozone generated isolates 2 and the smallest diameter of 0,535 cm isolates
produced 4. The measurement results are available most of the phosphate levels
were 6 isolates of 46,422 ppm (FePO4 ) and the smallest by 1 isolates of 7,875
ppm (FePO4). Based on test results concluded the potential for isolates 1, 2and 6
have the best ability in dissolving phosphate. The results both of macroscopic and
microscopically identification showed that isolate number 1, 2 and 6 including of
Aspergillus genus. | en_US |
