Abstract
Damage of fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) on sorghum from the farmers’ fields of southern India was assessed using space-borne data. Comparison of the Sentinel-2A satellite data of pre and post infestation periods revealed reduction in Leaf Area Index (LAI) in the infested fields. Groundtruth data confirmed that FAW infestation reduced LAI by 49.7%, biomass by 32.5% and grain yield by 51.8%. Infestation at Panicle Initiation (PI) stage caused maximum yield loss compared to flag leaf visible and boot stages. The interaction results showed FAW infestation at different crop stages had significant effect on biomass and yield, but not on LAI. Regression analysis with spectral vegetation indices revealed LAI (R2: 0.82) and NDVI (R2: 0.80) were significantly superior in identifying FAW infestation from the satellite data. This study demonstrates feasibility of site specific pest management and prevents further spread of the invasive FAW.
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Claims 9
Claim · model-written summary
Satellite data showed reduced LAI in infested fields.
- Interactor
- Spodoptera frugiperda
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Spodoptera frugiperdae0pest - Outcome
- Leaf Area Index (LAI)e1
- Direction
- reductione1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Damage of fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“revealed reduction in Leaf Area Index (LAI) in the infested fields”
Claim · model-written summary
Armyworm infestation reduced sorghum LAI by 49.7%.
- Treatment
- FAW infestatione1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- LAIe1
- Direction
- reducede1
- Value
- 49.7%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“FAW infestation reduced LAI by 49.7%, biomass by 32.5% and grain yield by 51.8%”
Claim · model-written summary
Armyworm infestation reduced sorghum biomass by 32.5%.
- Treatment
- FAW infestatione1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- biomasse1
- Direction
- reducede1
- Value
- 32.5%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“FAW infestation reduced LAI by 49.7%, biomass by 32.5% and grain yield by 51.8%”
Claim · model-written summary
Armyworm infestation reduced sorghum grain yield by 51.8%.
- Treatment
- FAW infestatione1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- grain yielde1
- Direction
- reducede1
- Value
- 51.8%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“FAW infestation reduced LAI by 49.7%, biomass by 32.5% and grain yield by 51.8%”
Claim · model-written summary
Infestation at panicle initiation caused the greatest yield loss.
- Organ / stage
- Panicle Initiation (PI) stagee1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- yield losse1
- Direction
- maximume1
- Comparator
- flag leaf visible and boot stagese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“Infestation at Panicle Initiation (PI) stage caused maximum yield loss compared to flag leaf visible and boot stages”
Claim · model-written summary
Infestation stage had a significant effect on biomass and yield.
- Organ / stage
- different crop stagese1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- biomass and yielde1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“FAW infestation at different crop stages had significant effect on biomass and yield”
Claim · model-written summary
Infestation stage did not significantly affect LAI.
- Organ / stage
- different crop stagese1
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- LAIe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“FAW infestation at different crop stages had significant effect on biomass and yield, but not on LAI”
Claim · model-written summary
LAI identified armyworm infestation with R2 of 0.82.
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- identifying FAW infestatione1
- Value
- 0.82e1
- Comparator
- NDVIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“LAI (R2: 0.82) and NDVI (R2: 0.80) were significantly superior in identifying FAW infestation from the satellite data”
Claim · model-written summary
NDVI identified armyworm infestation with R2 of 0.80.
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdae0pest
- Outcome
- identifying FAW infestatione1
- Value
- 0.80e1
- Comparator
- LAIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spodoptera frugiperda (J.E. Smith) on sorghum”
e1“LAI (R2: 0.82) and NDVI (R2: 0.80) were significantly superior in identifying FAW infestation from the satellite data”
The same questions in other papers
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- negative
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See all 11 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.