scholarly journals Molecular characterization and evaluation of indigenous entomopathogenic fungal isolates against Sorghum Chafer, Pachnoda interrupta (Olivier) in Ethiopia

2016 ◽  
Vol 8 (5) ◽  
pp. 34-45 ◽  
Author(s):  
Habtegebriel Belay ◽  
Getu Emana ◽  
Dawd Mohamed ◽  
Seyoum Emiru ◽  
Atnafu Getnet ◽  
...  

2013 ◽  
Vol 54 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Muhammad Ishtiaq Ali ◽  
Safia Ahmed ◽  
Geoff Robson ◽  
Imran Javed ◽  
Naeem Ali ◽  
...  




2010 ◽  
Vol 36 (7) ◽  
pp. 768-777 ◽  
Author(s):  
Jonas M. Bengtsson ◽  
Satya Prabhakar Chinta ◽  
Yitbarek Wolde-Hawariat ◽  
Merid Negash ◽  
Emiru Seyoum ◽  
...  


2016 ◽  
Vol 36 (01) ◽  
pp. 1-9 ◽  
Author(s):  
Merid N. Getahun ◽  
Tibebe D. Biasazin ◽  
Yitbarek Wolde-Hawariat ◽  
Jonas M. Bengtsson ◽  
Ylva Hillbur ◽  
...  

Sustainable pest management requires the use of ecosystem-friendly control options (e.g. entomopathogens) coupled with target-specific application methods. Here we investigate the susceptibility of the sorghum chafer (Pachnoda interrupta, Olivier) toMetarhiziumsp., isolated from deadP. interruptaunder field conditions over several years. Target-specific trapping was achieved using Japanese beetle traps or locally made autoinoculation devices, with methyl salicylate or banana as an attractant. Of the attracted and infected beetles, 49% mortality was achieved during October 2005 and 71% during July 2006, while the corresponding mortality in control treatments was 13 and 5%, respectively. We further confirmed that the mortality of the beetles was due to the fungal treatment as 50 and 80% of the dead beetles showed mycosis, respectively. The performance of the pathogen was also investigated in an autodissemination device in 2008 and 2009, where the beetles that were attracted passed through an inoculation chamber. Of the attracted and infected beetles in the autodissemination device, 58.5% (October) and 90.9% (July) were dead within 15 days after treatment. Control mortality was only 3 and 2%, respectively. The potential for horizontal transmission was investigated, where 47% (October) and 59% (July) of the beetles exposed to the pathogen through horizontal transmission were killed. The pathogen was found to be viable for more than 3 days in the field. Our results show thatMetarhiziumsp. has potential as a biological control agent, and for achieving autodissemination using the target pest as the vector.



2016 ◽  
Vol 30 (2) ◽  
pp. 68
Author(s):  
Belay Habtegebreiel ◽  
Emana Getu ◽  
Mohamed Dawd ◽  
Emiru Seyoum ◽  
Getnet Atenafu ◽  
...  

Sorghum chafer,<em>Pachnoda interrupta</em>, is the most serious pest of sorghum in Ethiopia destroying the entire fields at the milk stage and causing up to 100% yield loss. Current control methods entirely depend on direct spraying and baiting with insecticides which does not provide long lasting control. Efficient biological control agents such as entomopathogenic fungi that can control the pest in the breeding sites need to be developed. Traps equipped with auto-inoculation devices are important alternative methods to spread entomopathogens into insect pest populations. Field studies on fungal auto-inoculation trap development from locally available materials conducted over three feeding and two mating seasons of <em>P. interrupta</em> resulted in two efficient auto-inoculation traps (AIT1 and AIT2) baited with a five compounds blend lure which were not significantly different in catch performance with the standard Japanese beetle trap.  Two selected virulent isolates of <em>Metarhizium anisopliae</em> (PPRC51 and PPRC2) were tested for field efficacy using these two designs of locally affordable auto-inoculation traps loaded with 1gm of dry conidia. Using AIT1, PPRC51 and PPRC2 induced 41% and 40% field mortality respectively, on <em>P. interrupta</em> adults under high temperature and low relative humidity conditions, while highest field viability of the two isolates five days after application was 36 % and 40 % for PPRC51 and PPRC2, respectively. Based on the catch performance, field efficacy and viability data observed, the two AIT’s are recommended for further development to be used with PPRC51 and PPRC2 for augmentation biological control in the pest’s natural habitat as a component of integrated pest management against <em>P. interrupta</em>



2018 ◽  
Vol 64 (3) ◽  
pp. 407-414
Author(s):  
Camelia Filofteia Diguță ◽  
Irinel Gabriel Proca ◽  
Ștefana Jurcoane ◽  
Florentina Matei


2007 ◽  
Vol 27 (02) ◽  
pp. 53 ◽  
Author(s):  
Yitbarek Wolde-Hawariat ◽  
Emiru Seyoum ◽  
Bekele Jembere ◽  
Merid Negash ◽  
Bill S. Hansson ◽  
...  




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