Abstract
Recent research in Ghana has demonstrated the effectiveness of an isolate of B. bassiana, sensu lato (IMI 389521) from the U.K. against the larger grain borer Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), a major pest of stored maize. To determine whether this isolate is effective on immature stages of P. truncatus, a laboratory study of the response of immature stages (egg, larvae and pupae) of P. truncatus in maize grains to two concentrations (1 × 109 and 3.16 × 109 cfu/kg maize) of B. bassiana, IMI 389521 formulated with Entostat™ and kaolinite was undertaken. Adult emergence, per cent survival of adults that emerged and the number of larvae in each immature stage were assessed after 45 days. Apart from the egg experiment, higher numbers of adults emerged in grains containing larvae and pupae treated with B. bassiana product compared to the untreated maize control. This notwithstanding, survival of emerged adults of P. truncatus was greatly reduced in B. bassiana treatments (<10%) compared with 75–95% in the controls. Surface treatment with B. bassiana on pre-infested maize showed a significant effect on the developmental biology of P. truncatus in Ghana.
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Claims 3
Claim · model-written summary
More adults emerged from treated grains containing larvae and pupae than untreated controls.
- Treatment
- B. bassiana producte0
- Interactor
- B. bassiana
Beauveria bassianae0biocontrol_agent - Outcome
- numbers of adults emergede0
- Direction
- highere0
- Comparator
- untreated maize controle0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher numbers of adults emerged in grains containing larvae and pupae treated with B. bassiana product compared to the untreated maize control.”
Claim · model-written summary
Beauveria treatment reduced survival of emerged P. truncatus adults below 10% versus 75–95% in controls.
- Treatment
- B. bassiana treatmentse0
- Interactor
- P. truncatus
Prostephanus truncatuse0pest - Second interactor
- B. bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- survival of emerged adults of P. truncatuse0
- Direction
- greatly reducede0
- Value
- <10%e0
- Qualifier
- 75–95%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“survival of emerged adults of P. truncatus was greatly reduced in B. bassiana treatments (<10%) compared with 75–95% in the controls.”
t0“maize”
Claim · model-written summary
Surface Beauveria treatment significantly affected P. truncatus development in pre-infested maize in Ghana.
- Treatment
- Surface treatment with B. bassianae0
- Interactor
- P. truncatusProstephanus truncatuse0pest
- Second interactor
- B. bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- developmental biology of P. truncatuse0
- Setting
- Ghanae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Surface treatment with B. bassiana on pre-infested maize showed a significant effect on the developmental biology of P. truncatus in Ghana.”
The same questions in other papers
Beauveria bassiana · Prostephanus truncatus · Zea mays (maize)Positive and negative results
1 in the opposite direction
- negative
Beauveria bassiana · pest · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.