Isolation, molecular characterization and pathogenicity of native Bacillus thuringiensis, from Ethiopia, against the tomato leafminer, Tuta absoluta: detection of a new high lethal phylogenetic group

2021 ◽  
pp. 126802
Author(s):  
Birhan Aynalem ◽  
Diriba Muleta ◽  
Juan Venegas ◽  
Fassil Assefa
Keyword(s):  
Bacillus Thuringiensis ◽  
Molecular Characterization ◽  
Phylogenetic Group ◽  
Tuta Absoluta ◽  
Tomato Leafminer

scholarly journals Efficacy of a Beauveria bassiana strain, Bacillus thuringiensis and their combination against the tomato leafminer Tuta absoluta

2017 ◽  
Vol 25 (2) ◽  
pp. 23 ◽  
Author(s):  
Despoina Tsoulnara ◽  
Gordon Port
Keyword(s):  
Bacillus Thuringiensis ◽  
Synergistic Effect ◽  
Beauveria Bassiana ◽  
Larval Mortality ◽  
Tuta Absoluta ◽  
Recommended Dose ◽  
Tomato Leafminer ◽  
Single Leaf ◽  
Combined Use ◽  
Good Potential

A single leaf bioassay was developed to investigate the entomopathogenic efficacy of a Beauveria bassiana strain, Bacillus thuringiensis (Costar®) and their interactions on larval mortality of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). Tomato leaves were removed from the plants and sprayed with manufacturers’ highest field recommended concentrations for tomato crops before or after infesting the leaves with the larvae. Third instar larvae proved the most susceptible, while susceptibility was lower in the second instar larvae. The combined use showed a higher potential indicating a positive synergistic effect. In addition, treated leaves were sprayed directly with concentrations of 0.0, 0.05, 0.10, 0.15 and 0.20 mL/L of B. bassiana. The efficacy was higher for the tested concentration of 0.20 mL/L that is higher than the recommended dose. The present study suggests that those bioinsecticides have a good potential in the control of T. absoluta.

scholarly journals Influence of insect traps and insecticides sequential application as a tactic for management of tomato leafminer, Tuta absoluta (Meyrick), (Lepidoptera: Gelechiidae)

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Nasr Mohamed Abdelmaksoud ◽  
Nahed Fawzy Abdel-Aziz ◽  
Elham Ahmed Sammour ◽  
Essam Abd El Maguied Agamy ◽  
Ahmed Mohamed El-Bakry ◽  
...  
Keyword(s):  
Tuta Absoluta ◽  
Tomato Leafminer
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