Study of Potassium Solubilizing Bacteria from Limestone Mining Area in Palimanan, Cirebon Quarry
- Author:
Erni Angraini
;
Nisa Rachmania Mubarik
;
Rahayu Widyastuti
- Publication Type:Journal Article
- Keywords:
biological fertilizer;
Burkholderia cepacia;
dissolution index;
feldspar
- MeSH:
Potassium;
Burkholderia cepacia
- From:Malaysian Journal of Microbiology
2016;12(1):62-68
- CountryMalaysia
- Language:English
-
Abstract:
Aims: Potassium is an essential macronutrient for the growth and development of plants. Most of potassium in the soil
presented in mineral forms or non-exchangeable forms which are not available for plants. The microbial activity
facilitated to release of mineral forms or non-exchangeable potassium to the exchangeable or water-soluble. This study
was aimed to isolate, select, and characterize of the selected potassium solubilizing bacteria from limestone mining area
in Palimanan, Cirebon Quarry.
Methodology and results: Isolation and selection of bacteria was done based on potassium dissolving index in
Aleksandrov media containing feldspar, non-exchangeable potassium. Thirty seven isolates of potassium solubilizing
bacteria were obtained in this study. Three isolates showed higher dissolution index, namely KQC.4B.1, KQC.5A.4, and
KQC.5C.5. All of isolates were Gram negative bacteria, short-rod formed, and able to dissolve potassium concentration
on 10th and 20th days. The three isolates showed 99.9% physiologically similar with Burkholderia cepacia. Futhermore by
using 16S rRNA gene identification, isolate KQC.5C.5 closely related with B. cepacia with 99% identity. The application
of isolate KQC.5C.5 on soil showed that the isolate was able to release the solution K formed after 10th day incubation.
Conclusion, significance and impact of study: Potassium solubilizing bacteria (B. cepacia) could use as a biological
fertilizer for providing potassium which is available to plants grown on reclamation area of limestone quarry.
- Full text:P020160317487280281000.pdf
