Abstract
African rice gall midge (AfRGM), Orseolia oryzivora (Diptera: Cecidomyiidae) is a significant pest of rainfed and lowland rice that causes about 25% to 100% yield loss. The effectiveness of chemical insecticides has been compromised due to insecticide resistance and concerns over their environmental impact, which necessitated an alternative approach that is safe and more sustainable. The study aimed to determine the effectiveness of Entomopathogenic fungi (EPF), Metarhizium anisopliae and Beauveria bassiana in controlling AfRGM on four popular rice cultivars under screenhouse conditions at AfricaRice/IITA, Ibadan, Nigeria. The experiment was laid out in a 4 x 3 factorial fitted in a completely randomized design (CRD) in three replications. Results showed that although both fungi significantly reduced AfRGM tiller infestation, the degree of reduction varied with the specific fungus and rice variety grown. Beauveria bassiana exhibited better control of AfRGM on FARO 37 and FARO 44 varieties, while M. anisopliae was more effective on FARO 66 and FARO 67 varieties. Tiller infestation had a significant negative correlation with grain yield (r= − 0.87, R2 = 77). The study also indicated that the two fungi strains had no harmful effect on the chlorophyll content and positively influenced agronomic traits and grain yield.
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Claims 9
Claim · model-written summary
Metarhizium anisopliae significantly reduced gall midge tiller infestation.
- Taxon
- rice
Oryza sativae2 - Treatment
- Metarhizium anisopliaee1
- Interactor
- AfRGMe0pest
- Second interactor
- Metarhizium anisopliae
Metarhizium anisopliaee1biocontrol_agent - Outcome
- AfRGM tiller infestatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both fungi significantly reduced AfRGM tiller infestation”
e1“Metarhizium anisopliae and Beauveria bassiana in controlling AfRGM”
e2“rice cultivars”
Claim · model-written summary
Beauveria bassiana significantly reduced gall midge tiller infestation.
- Taxon
- riceOryza sativae2
- Treatment
- Beauveria bassianae1
- Interactor
- AfRGMe0pest
- Second interactor
- Beauveria bassiana
Beauveria bassianae1biocontrol_agent - Outcome
- AfRGM tiller infestatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both fungi significantly reduced AfRGM tiller infestation”
e1“Metarhizium anisopliae and Beauveria bassiana in controlling AfRGM”
e2“rice cultivars”
Claim · model-written summary
Beauveria bassiana gave better gall midge control on FARO 37.
- Taxon
- riceOryza sativae1
- Material
- FARO 37e0
- Interactor
- AfRGMe0pest
- Second interactor
- Beauveria bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- control of AfRGMe0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beauveria bassiana exhibited better control of AfRGM on FARO 37 and FARO 44 varieties”
e1“rice cultivars”
Claim · model-written summary
Beauveria bassiana gave better gall midge control on FARO 44.
- Taxon
- riceOryza sativae1
- Material
- FARO 44e0
- Interactor
- AfRGMe0pest
- Second interactor
- Beauveria bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- control of AfRGMe0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beauveria bassiana exhibited better control of AfRGM on FARO 37 and FARO 44 varieties”
e1“rice cultivars”
Claim · model-written summary
Metarhizium anisopliae gave more effective gall midge control on FARO 66.
- Taxon
- riceOryza sativae1
- Material
- FARO 66e0
- Interactor
- M. anisopliaeMetarhizium anisopliaee0biocontrol_agent
- Outcome
- more effectivee0
- Direction
- more effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. anisopliae was more effective on FARO 66 and FARO 67 varieties.”
e1“rice cultivars”
Claim · model-written summary
Metarhizium anisopliae gave more effective gall midge control on FARO 67.
- Taxon
- riceOryza sativae1
- Material
- FARO 67e0
- Interactor
- M. anisopliaeMetarhizium anisopliaee0biocontrol_agent
- Outcome
- more effectivee0
- Direction
- more effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. anisopliae was more effective on FARO 66 and FARO 67 varieties.”
e1“rice cultivars”
Claim · model-written summary
Tiller infestation was negatively correlated with grain yield.
- Taxon
- riceOryza sativae1
- Interactor
- Orseolia oryzivoraOrseolia oryzivorae2pest
- Outcome
- grain yielde0
- Direction
- negative correlatione0
- Value
- r= − 0.87e0
- Qualifier
- Tiller infestatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tiller infestation had a significant negative correlation with grain yield (r= − 0.87, R2 = 77).”
e1“rice cultivars”
e2“African rice gall midge (AfRGM), Orseolia oryzivora”
Claim · model-written summary
The two fungal strains had no harmful effect on chlorophyll content.
- Taxon
- riceOryza sativae1
- Treatment
- two fungi strainse0
- Outcome
- chlorophyll contente0
- Direction
- no harmful effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the two fungi strains had no harmful effect on the chlorophyll content”
e1“rice cultivars”
Claim · model-written summary
The two fungal strains positively influenced agronomic traits and grain yield.
- Taxon
- riceOryza sativae2
- Treatment
- two fungi strainse1
- Outcome
- agronomic traits and grain yielde0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positively influenced agronomic traits and grain yield.”
e1“the two fungi strains had no harmful effect”
e2“rice cultivars”
The same questions in other papers
Beauveria bassiana · pest · Oryza sativa (rice)Results differ
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- positive
- positive
- positive
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See all 10 papers →Metarhizium anisopliae · pest · Oryza sativa (rice)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.