Yadi Suryadi*1, Dwiningsih Susilowati1, Alina Akhdiya1, Triny Suryani Kadir2 And Baskoro Wibowo3
1 Lab. Microbiology ICABIOGRAD-IAARD Bogor/Jl Tentara Pelajar 3A Bogor 16111
2 Dept. of Plant Protection ICRR-IAARD/Jl Raya 9 Sukamandi Subang 41256
3 Directorates of Plant Protection/ Jatisari, West Java, Indonesia
Abstract: The objective of this work was aimed to determine the efficacy of consortium bacteria containing a mixture of bacterial antagonist for controlling major rice diseases under System of Rice Intensification practices. The experiment consist of three consortium bacteria viz. C 1 (*Bacillus sp E 64, *B. firmus E 65, *Burkholderia sp E 76, *B. cereus C 29d, *B. licheniformis CPKPP 35, *Bacillus sp H, *Bacillus sp IR), C 2 (*Bacillus sp E 64, *B. firmus E 65, *Burkholderia sp E 76, * B. cereus C 29d, * B. licheniformis CPKPP 35, *Azospirillum sp Aj. 5252) and C 3 (*Bacillus sp H, *Bacillus sp IR). All consortiums were treated three times by spraying rice canopy leaves with consortium bacteria suspensions at 14 days, 28 days and 42 days after transplanting. The candidate’s C 1 could reduced the bacterial blight and red stripe diseases severity when compared with control treatment (untreated plots), with the efficacy control less than chemical control, although not effective against sheath blight disease. The yield increase obtained by C 2, C 3 and C 4 applications were ranging from 8.7% to 12.2%.
Key words: efficacy, disease management, bacterial antagonist, rice