Abstract
Abstract Larval and adult populations of the Egyptian alfalfa weevil (EAW) Hypera brunneipennis (Boheman) (Coleoptera: Curculionidae) was monitored after application of the entomopathogenic fungus Beauveria bassiana in the alfalfa field ( Medicago sativa L.) in two successive seasons 2014/2015 and 2015/2016. The second and last generation of the weevil on April 10, 2016, was controlled by only one application with the conidiospores of the entomopathogenic fungus B. bassiana (3 × 10 8 spores/ml). Accordingly, the larval population decreased from 16.07 ± 1.09 in season 2015/2016 to 7.37 ± 0.05 individuals/50 sweep net double strokes in season 2016/2017. Also, the adult weevil’s population decreased from 5.66 ± 0.8 to 2.55 ± 0.6 individuals/50 sweep net double strokes in the two seasons, respectively. 39.66% mortality rate was recorded in the Hypera brunneipennis adults aestivated under loose bark of the surrounding eucalyptus trees, which received the application of B. bassiana in the field. Another application with the fungus, targeting the second generation of the pest adults in alfalfa each season, will undoubtedly lead to a further decrease in the pest population.
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Claims 4
Claim · model-written summary
One application of Beauveria bassiana decreased the larval population of the Egyptian alfalfa weevil in alfalfa to 7.37 ± 0.05 individuals per 50 sweep net double strokes in 2016/2017.
- Taxon
- Medicago sativa
Medicago sativae0 - Treatment
- one application with the conidiospores of the entomopathogenic fungus B. bassianae3
- Interactor
- Hypera brunneipennisHypera brunneipennise1pest
- Second interactor
- Beauveria bassiana
Beauveria bassianae2biocontrol_agent - Outcome
- the larval populatione4
- Direction
- decreasede4
- Value
- 7.37 ± 0.05e4
- Comparator
- season 2015/2016e4
- Setting
- two successive seasons 2014/2015 and 2015/2016e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the alfalfa field ( Medicago sativa L.) in two successive seasons 2014/2015 and 2015/2016”
e1“Larval and adult populations of the Egyptian alfalfa weevil (EAW) Hypera brunneipennis (Boheman)”
e2“application of the entomopathogenic fungus Beauveria bassiana in the alfalfa field”
e3“The second and last generation of the weevil on April 10, 2016, was controlled by only one application with the conidiospores of the entomopathogenic fungus B. bassiana (3 × 10 8 spores/ml)”
e4“the larval population decreased from 16.07 ± 1.09 in season 2015/2016 to 7.37 ± 0.05 individuals/50 sweep net double strokes in season 2016/2017”
Claim · model-written summary
Beauveria bassiana application decreased the adult Egyptian alfalfa weevil population to 2.55 ± 0.6 individuals per 50 sweep net double strokes.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- one application with the conidiospores of the entomopathogenic fungus B. bassianae3
- Interactor
- Hypera brunneipennisHypera brunneipennise1pest
- Second interactor
- Beauveria bassianaBeauveria bassianae2biocontrol_agent
- Outcome
- adult weevil’s populatione5
- Direction
- decreasede5
- Value
- 2.55 ± 0.6e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the alfalfa field ( Medicago sativa L.) in two successive seasons 2014/2015 and 2015/2016”
e1“Larval and adult populations of the Egyptian alfalfa weevil (EAW) Hypera brunneipennis (Boheman)”
e2“application of the entomopathogenic fungus Beauveria bassiana in the alfalfa field”
e3“The second and last generation of the weevil on April 10, 2016, was controlled by only one application with the conidiospores of the entomopathogenic fungus B. bassiana (3 × 10 8 spores/ml)”
e5“the adult weevil’s population decreased from 5.66 ± 0.8 to 2.55 ± 0.6 individuals/50 sweep net double strokes in the two seasons, respectively”
Claim · model-written summary
A 39.66% mortality rate was recorded in Egyptian alfalfa weevil adults aestivated under loose bark of eucalyptus trees near fungus-treated alfalfa fields.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- the application of B. bassiana in the fielde6
- Interactor
- Hypera brunneipennisHypera brunneipennise6pest
- Second interactor
- B. bassianaBeauveria bassianae6biocontrol_agent
- Outcome
- mortality ratee6
- Value
- 39.66%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the alfalfa field ( Medicago sativa L.) in two successive seasons 2014/2015 and 2015/2016”
e6“39.66% mortality rate was recorded in the Hypera brunneipennis adults aestivated under loose bark of the surrounding eucalyptus trees, which received the application of B. bassiana in the field”
Claim · model-written summary
A further Beauveria bassiana application on the second generation of adults each season will undoubtedly lead to a further decrease in the pest population in alfalfa.
- Taxon
- alfalfaMedicago sativae7
- Treatment
- Another application with the funguse7
- Outcome
- further decrease in the pest populatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Another application with the fungus, targeting the second generation of the pest adults in alfalfa each season, will undoubtedly lead to a further decrease in the pest population”