Microbial diversity on sedimentated rice fields due to coal mining activities in Tenggarong Seberang subdistrict of Kutai Kartanegara

1st International Conference on Tropical Studies and Its Application

Rosfiansyah^1 ; Sopialena^1

Agroecotechnology Department of Agriculture Faculty, Mulawarman University Samarinda, East Kalimantan, Indonesia^1

关键词: bacterial;    Cladosporium;    Coal mining;    Microbial diversity;    nematodes;    Process of soil;    Soil fertility;    Trichoderma;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/144/1/012028/pdf
DOI  :  10.1088/1755-1315/144/1/012028

来源: IOP

【 摘 要 】

The results showed that on upland rice fields with sediment found five genus of fungus with number of colonies 4.0 x 103cfu/g to 9.3 x 104cfu/g; three bacterial families with number of colonies 7,1 x 104cfu/g to 2,8 x 105cfu/g; and five genera of nematodes with the amount of 2.6 x 102/kg of soil to 1.1 x103/kg of soil. In unpolished upland rice fields were found four genus of fungus with colonies of 2.4 x 103cfu/g to 8.4 x 104cfu/g, three bacterial families with number of colonies 1.2 x 105cfu/g to 2.7 x 105cfu/g and four genera of nematodes with the amount of 9.6 x 102/kg of soil to 1.1 x103/kg of soil. The most common microbes are Aspergillus, Cladosporium, Penicillium, Phytium and Trichoderma (fungi), Achromobacteraceae, Brevibacteriaceae, Micrococcaceae (Bacteria), as well as Dorylaimus, Hemicycliophora, Mononchus, Meloidogyne, Paratrichodorus, Radopholus, Rotylenchulus, Rhabditis, Seinura and Trichodorus (Nematodes). Fungi, bacteria and nematodes have a good role in the process of soil decomposition. The results of soil chemical analysis showed that soil fertility is lower in upland rice fields with sediments compare to those without sediment.