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All Journal Biodiversitas Journal of Biological Diversity
SRI WIDAWATI
Bidang Mikrobiologi, Pusat Penelitian Biologi, Lembaga Ilmu Pengetahuan Indonesia (LIPI), Bogor 16002.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The population of phosphate solubilizing bacteria (PSB) from Cikaniki, Botol Mountain, and Ciptarasa Area, and the ability of PSB to solubilize insoluble P in solid pikovskaya medium SRI WIDAWATI; SULIASIH SULIASIH
Biodiversitas Journal of Biological Diversity Vol. 7 No. 2 (2006)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d070203

Abstract

Phosphate solubilizing bacteria (PSB) were collected from plant rhizosphere at Cikaniki (1100 m asl.), soil at Botol Mountain (1000, 1500, and 1800 m asl.), and Ciptarasa (600, 1000, and 1500 m asl.), area at Gunung Halimun National Park (GHNP). The soil ware collected randomly from 3 areas and taken from 0-15 cm depth in the plants rhizosphere at Cikaniki and forest floor soil in Gunung Botol and Ciptarasa. The result showed that the difference of elevation area, soil pH, forest vegetation, and microbial habitat (rhizosphere and forest floor) were not the inhabitation factors of the biodiversity of PSB and their ability to solubilize insoluble phosphate, but the inhabitation factors on the growth of the PSB population. The highest population of PSB at GHNP was founded in the plant rhizosphere of Altingia exelsa Norona and Schima wallichii (Dc.) Korth (107sel/g soil) at Cikaniki and in the forest floor soil (108sel/g soil) at Botol Mountain (1000 m asl.). Pseudomonas sp., Bacillus sp., Bacillus megaterium, and Chromobacterium sp. dominated Cikaniki, Botol Mountain and Ciptarasa area. Those isolates could solubilize insoluble phosphate on solid Pikovskaya medium with the range of diameter is 1.5-2.5 cm. © 2006 Jurusan Biologi FMIPA UNS SurakartaKey words: phosphate solubilizing bacteria (PSB), Cikaniki, Gunung Botol, and Ciptarasa area.
Augmentation of potential phosphate solubilizing bacteria (PSB) stimulate growth of green mustard (Brasica caventis Oed.) in marginal soil SRI WIDAWATI; SULIASIH SULIASIH
Biodiversitas Journal of Biological Diversity Vol. 7 No. 1 (2006)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d070104

Abstract

The potential of phosphate solubilizing bacteria/PSB (Bacillus megaterium, B. pantothenticus, Chromobacterium lividum and Klebsiella aerogenes) were used as biofertilizer to increase the fresh leaf production of green mustard (Brasica caventis Oed.). An experiment was conducted at green house condition. The experiment were used 18 treatments such as single isolate of potential PSB (A,B,C,D), inoculants contain two isolates of potential PSB (E,F,G,H,I,J), inoculants contain three isolates of potential PSB (K, L, M, N), inoculants contain four isolate of potential PSB (O), chemistry fertilizer (P = control 1), organic fertilizer (Q = control 2), and without fertilizer (R = control 3). The treatments were arranged in Completely Randomized Design (CRD) with 5 replications. The result showed that the inoculants of potential PSB increased the fresh plant production of green mustard. The mix of four isolates of potential PSB (inoculants O) was the best to increase the fresh plant production of green mustard until 32.87% than other PSB inoculants, 207.84% than control 1,217.23% than control 2, and 930.60% than control 3. © 2006 Jurusan Biologi FMIPA UNS SurakartaKey words: BPF/PSB, Wamena Biological Garden, Brasica caventis Oed.
Co-Authors SULIASIH SULIASIH