Abstract
Conventional soybean weed management and transgenic herbicide-tolerant management were examined to assess their effects on soybean insect pest populations in south Georgia in 1997 and 1998. Soybean variety had very little impact on the insect species observed, except that maturity group effects were observed for stink bug, primarily Nezara viridula (L.), population densities on some sampling dates. Stink bugs were more abundant on the early maturing varieties in mid-season. Velvetbean caterpillar, Anticarsia gemmatalis Hübner, potato leafhopper, Empoasca fabae (Harris), and grasshoppers Melanoplus spp. were more numerous on either conventional or herbicide-tolerant varieties on certain dates, although these differences were not consistent throughout the season. Soybean looper, Pseudoplusia includens (Walker), threecornered alfalfa hopper, Spissistilus festinus (Say), and whitefringed beetles, Graphognathus spp , demonstrated no varietal preference in this study. Few weed treatment differences were observed, but if present on certain sampling dates, then pest numbers were higher in plots where weeds were reduced (either postemergence herbicides or preplant herbicide plus postemergence herbicide). The exception to this weed treatment effect was grasshoppers, which were more numerous in weedy plots when differences were present. In post emergence herbicide plots, there were no differences in insect pest densities between the conventional herbicides (e.g., Classic, Select, Cobra, and Storm) compared with specific gene-inserted herbicide-tolerant materials (i.e., Roundup and Liberty). Defoliation, primarily by velvetbean caterpillar, was different between soybean varieties at some test sites but not different between herbicide treatments. We did not observe differences in seasonal abundance of arthropod pests between conventional and transgenic herbicide-tolerant soybean.
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Claims 14
Claim · model-written summary
Soybean variety had little overall effect on observed insect species.
- Taxon
- Soybean
Glycine maxe0 - Outcome
- insect species observede0
- Direction
- very little impacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean variety had very little impact on the insect species observed”
Claim · model-written summary
Early maturing soybean varieties had more stink bugs in mid-season.
- Taxon
- SoybeanGlycine maxt0
- Material
- early maturing varietiese0
- Interactor
- Stink bugsPentatomidaee0pest
- Outcome
- Stink bugse0
- Direction
- more abundante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stink bugs were more abundant on the early maturing varieties in mid-season.”
t0“Soybean”
Claim · model-written summary
Velvetbean caterpillar abundance varied between conventional and herbicide-tolerant varieties on some dates without a consistent seasonal difference.
- Taxon
- SoybeanGlycine maxt0
- Material
- conventional or herbicide-tolerant varietiese0
- Interactor
- Anticarsia gemmatalis
Anticarsia gemmatalise0pest - Outcome
- Velvetbean caterpillare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetbean caterpillar, Anticarsia gemmatalis Hübner, potato leafhopper, Empoasca fabae (Harris), and grasshoppers Melanoplus spp. were more numerous on either conventional or herbicide-tolerant varieties on certain dates, although these differences were not consistent throughout the season.”
t0“Soybean”
Claim · model-written summary
Potato leafhopper abundance varied by soybean variety on some dates without a consistent seasonal difference.
- Taxon
- SoybeanGlycine maxt0
- Material
- conventional or herbicide-tolerant varietiese0
- Interactor
- Empoasca fabae
Empoasca fabaee0pest - Outcome
- potato leafhoppere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetbean caterpillar, Anticarsia gemmatalis Hübner, potato leafhopper, Empoasca fabae (Harris), and grasshoppers Melanoplus spp. were more numerous on either conventional or herbicide-tolerant varieties on certain dates, although these differences were not consistent throughout the season.”
t0“Soybean”
Claim · model-written summary
Grasshopper abundance varied by soybean variety on some dates without a consistent seasonal difference.
- Taxon
- SoybeanGlycine maxt0
- Material
- conventional or herbicide-tolerant varietiese0
- Interactor
- Melanoplus spp.
Melanopluse0pest - Outcome
- grasshopperse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetbean caterpillar, Anticarsia gemmatalis Hübner, potato leafhopper, Empoasca fabae (Harris), and grasshoppers Melanoplus spp. were more numerous on either conventional or herbicide-tolerant varieties on certain dates, although these differences were not consistent throughout the season.”
t0“Soybean”
Claim · model-written summary
Soybean looper showed no varietal preference.
- Taxon
- SoybeanGlycine maxe0
- Interactor
- Pseudoplusia includens
Chrysodeixis includense0pest - Outcome
- no varietal preferencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean looper, Pseudoplusia includens (Walker), threecornered alfalfa hopper, Spissistilus festinus (Say), and whitefringed beetles, Graphognathus spp , demonstrated no varietal preference in this study.”
Claim · model-written summary
Threecornered alfalfa hopper showed no varietal preference in soybean.
- Taxon
- SoybeanGlycine maxe0
- Interactor
- Spissistilus festinus
Spissistilus festinuse0pest - Outcome
- no varietal preferencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean looper, Pseudoplusia includens (Walker), threecornered alfalfa hopper, Spissistilus festinus (Say), and whitefringed beetles, Graphognathus spp , demonstrated no varietal preference in this study.”
Claim · model-written summary
Whitefringed beetles showed no varietal preference in soybean.
- Taxon
- SoybeanGlycine maxe0
- Interactor
- Graphognathus sppe0pest
- Outcome
- no varietal preferencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean looper, Pseudoplusia includens (Walker), threecornered alfalfa hopper, Spissistilus festinus (Say), and whitefringed beetles, Graphognathus spp , demonstrated no varietal preference in this study.”
Claim · model-written summary
When weed treatments differed, pest numbers were higher in soybean plots with reduced weeds.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- postemergence herbicidese0
- Outcome
- pest numberse0
- Direction
- highere0
- Qualifier
- where weeds were reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pest numbers were higher in plots where weeds were reduced (either postemergence herbicides or preplant herbicide plus postemergence herbicide).”
t0“Soybean”
Claim · model-written summary
Where treatment differences occurred, grasshoppers were more numerous in weedy soybean plots.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- grasshoppersAcridomorphae0pest
- Outcome
- grasshopperse0
- Direction
- more numerouse0
- Setting
- weedy plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grasshoppers, which were more numerous in weedy plots when differences were present.”
t0“Soybean”
Claim · model-written summary
In postemergence herbicide plots, pest densities did not differ between conventional and gene-inserted herbicide-tolerant materials.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- conventional herbicidese0
- Outcome
- insect pest densitiese0
- Direction
- no differencese0
- Comparator
- gene-inserted herbicide-tolerant materialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In post emergence herbicide plots, there were no differences in insect pest densities between the conventional herbicides (e.g., Classic, Select, Cobra, and Storm) compared with specific gene-inserted herbicide-tolerant materials (i.e., Roundup and Liberty).”
t0“Soybean”
Claim · model-written summary
Soybean variety affected defoliation at some sites.
- Taxon
- soybeanGlycine maxe0
- Material
- soybean varietiese0
- Interactor
- velvetbean caterpillarAnticarsia gemmatalise0pest
- Outcome
- Defoliatione0
- Direction
- differente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation, primarily by velvetbean caterpillar, was different between soybean varieties at some test sites”
Claim · model-written summary
Herbicide treatments did not differ in soybean defoliation.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- herbicide treatmentse0
- Interactor
- velvetbean caterpillarAnticarsia gemmatalise1pest
- Outcome
- Defoliatione1
- Direction
- not differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not different between herbicide treatments.”
t0“Soybean”
e1“Defoliation, primarily by velvetbean caterpillar, was different between soybean varieties at some test sites”
Claim · model-written summary
Seasonal arthropod pest abundance did not differ between conventional and transgenic herbicide-tolerant soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- conventionale0
- Outcome
- seasonal abundance of arthropod pestse0
- Direction
- did not observe differencese0
- Comparator
- transgenic herbicide-tolerant soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We did not observe differences in seasonal abundance of arthropod pests between conventional and transgenic herbicide-tolerant soybean.”
The same questions in other papers
herbicide · pest · Glycine max (soybean)Positive and negative results
16 papers in the same direction as this paper · 18 reporting no difference from an alternative
- no effect
- positive
- positive
31 papers more in this group
See all 35 papers →herbicide · Anticarsia gemmatalis · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- no effect
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.