Kompatibilitas Bacillus spp. dan Aktinomiset sebagai Agens Hayati Xanthomonas oryzae pv. oryzae dan Pemacu Pertumbuhan Padi
Abstract
Bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae is an important disease on rice. The bacteria is seed borne and survives for a long time in the seed. Some beneficial microbes, such as Bacillus spp. and actinomycetes has been reported as biocontrol agents for the disease. The objectives of the research was to select isolates of actinomycetes as biocontrol agents for X. oryzae pv. oryzae which is also compatible with Bacillus spp. by seed application. Actinomycetes isolated from soil was selected using dual culture method on agar medium and on growing medium composing of mixture of soil and manure (1:1 w/w). Three isolates out of 16 isolated actinomycetes, i.e. APS 7, APS 9, and APS 12 showed antagonistic activities against X. oryzae pv. oryzae and compatible with Bacillus spp. Both Bacillus spp. and actinomycetes was applied to rice seed variety Ciherang using seed coating method in formulation containing rice husk. Actinomycetes treatment using APS 9 isolate was able to suppress population of X. oryzae pv. oryzae by (88.89%) and induce crown growth by 36.13%. The highest percentage of seedling emergence was obtained on combination treatment of B12 + APS 7 and single treatment of APS 9, i.e. 83.33% and 79%, respectively and significantly different with those of control treatment (56.67%). Application of Bacillus spp. and actinomycetes on rice seed was able to suppress population of X. oryzae pv. oryzae on rice seedling and induce rice growth.
Downloads
Authors who publish in Jurnal Fitopatologi Indonesia agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-SA) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
