| dc.description.abstract | An investigation at the Southern limestone
mountainous area of Jember-East Java Indonesia, was performed to
study the importance of soil chemical properties, population of total
bacteria and fungi in the rhizosphere of some essential species. The
objectives of the research were: (a) to compare the condition
between exploited limestone mining area and unexploited area on
population of rhizosphere of some plant species soil microbe and
some soil chemical properties, and (b) to identify the correlation
between soil microbial population and some soil chemical
properties. The research was conducted by two steps, namely
exploitation in the field and laboratory analysis. Soil samples were
taken under the specified dominant plants at four locations of the
limestone mountain. The four locations representing the high (>84
m ASL), middle (52 – 78m ASL), and low (< 34m ASL) sites of the
mountain topography and one location of rehabilitation area (< 25m
ASL). The west site was indicating the exploited limestone mining
area, whereas the east site was the unexploited area. It was found
that Jatropha gossypifolia L, Calotropis gigantea, and Randia sp,
are the dominant species plants at the two sites. Soil samples of
plants rhizosphere were analyzed for total bacteria, total fungi, soil
pH, organic carbon content, total nitrogen, and concentration of Pavailable.
The results of this study revealed that the population of
total bacteria ranged between 3.70 to 48.23 cfu (x104
g-1 dry soil),
whereas total fungi ranged between 3.13 to 33.06 cfu (x102
g-1 dry
soil). The correlation between total bacteria and organic carbon and
total nitrogen were positively correlated, with r = 0.73 and 0.60,
respectively. On the contrary, there were no correlations between
total fungi with all chemical properties. | en_US |
