Efficacy of Exserohilum monoceras, a potential fungi for biocontrol of Echinochloa spesies

• Main Authors: Sadi, Tosiah, Kadir, Jugah, Meon, Sariah, Juraimi, Abdul Shukor, Sastroutomo, Soetikno Slamet
• Format: Article
• Language: English
• Published: Malaysian Agricultural Research and Development Institute (MARDI) 2011
• Online Access: http://psasir.upm.edu.my/id/eprint/48883/1/Efficacy%20of%20Exserohilum%20monoceras%2C%20a%20potential%20fungi%20for%20biocontrol%20of%20Echinochloa%20spesies.pdf; http://psasir.upm.edu.my/id/eprint/48883/; http://ejtafs.mardi.gov.my/index.php/publication/issues/archive/25-2011/volume-39-no1/39-390113

Indigenous Exserohilum monoceras isolate 1125 was evaluated for its efficacy on different Echinochloa species. Exserohilum monoceras spores, prepared at 103, 104, 105, 106 and 107 spores/ml concentrations and sprayed onto E. crus-galli, showed increased infectivity with increasing spore concentration. Disease progress of E. crus-galli at various leaf development stages revealed the highest area under the disease progress curve (AUDPC) was at the 4-leaf stage (535.69 unit2), followed by the 3-leaf (446.75 unit2), 2-leaf (377.22 unit2) and 6-leaf stage (263.72 unit2). The fungus was also tested on 4 species of Echinochloa. The results showed that the AUDPC was highest for E. crus- galli var formosensis (693.33 unit2), followed by E. crus-galli var crus-galli (638.33 unit2), E. oryzicola (470 unit2) and E. colona (447 unit2). The study illustrated that E. monoceras is a potential fungus for biological control that can be further developed into bioherbicide.