Abstract
Grain sorghum for these studies was grown in a wheat-sorghum-fallow cropping system. Early greenbug, Schizaphis graminum (Rondani), populations were greatly reduced by no tillage (NT) compared with conventional tillage (CT). In the CT plots, a hybrid resistant to greenbug had only half as many greenbugs per plant as a susceptible hybrid. Aphid densities on the resistant and susceptible hybrids were reduced to an even lower level by the NT treatment. This result indicates that during early stages of a greenbug infestation, NT can be more effective than plant resistance in reducing greenbug numbers. when either a NT, a late planting date, or a resistant-hybrid treatment was included as part of the cropping system, greenbug damage was reduced. The effect of these management components was complementary. The combination of NT and a resistant hybrid was most effective in reducing damage, decreasing it considerably below the economic level. Use of a resistant hybrid ameliorated the effect of the late planting date. Because cropping practices can reduce greenbug damage on grain sorghum to below economic levels without insecticides, these techniques should provide valuable alternatives for management of greenbug.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
No tillage greatly reduced early greenbug populations compared with conventional tillage in sorghum.
- Treatment
- no tillage (NT)e1
- Interactor
- Schizaphis graminum
Schizaphis graminume1pest - Outcome
- populationse1
- Direction
- greatly reducede1
- Comparator
- conventional tillage (CT)e1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e1“Early greenbug, Schizaphis graminum (Rondani), populations were greatly reduced by no tillage (NT) compared with conventional tillage (CT)”
Claim · model-written summary
A greenbug-resistant sorghum hybrid had only half as many greenbugs per plant as a susceptible hybrid in conventional tillage plots.
- Treatment
- a hybrid resistant to greenbuge2
- Interactor
- greenbugsSchizaphis graminume2pest
- Outcome
- greenbugs per plante2
- Direction
- only half as manye2
- Value
- halfe2
- Comparator
- a susceptible hybride2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e2“a hybrid resistant to greenbug had only half as many greenbugs per plant as a susceptible hybrid”
Claim · model-written summary
No-tillage treatment reduced aphid densities on resistant and susceptible sorghum hybrids to an even lower level.
- Treatment
- NT treatmente3
- Interactor
- Aphide3pest
- Outcome
- Aphid densitiese3
- Direction
- reduced to an even lower levele3
- Comparator
- resistant and susceptible hybridse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e3“Aphid densities on the resistant and susceptible hybrids were reduced to an even lower level by the NT treatment”
Claim · model-written summary
Early in a greenbug infestation, no tillage can be more effective than plant resistance in reducing greenbug numbers.
- Treatment
- NTe4
- Interactor
- greenbugSchizaphis graminume4pest
- Outcome
- greenbug numberse4
- Direction
- more effectivee4
- Comparator
- plant resistancee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e4“NT can be more effective than plant resistance in reducing greenbug numbers”
Claim · model-written summary
No tillage reduced greenbug damage when included in the cropping system.
- Treatment
- NTe5
- Interactor
- greenbugSchizaphis graminume5pest
- Outcome
- greenbug damagee5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e5“when either a NT, a late planting date, or a resistant-hybrid treatment was included as part of the cropping system, greenbug damage was reduced”
Claim · model-written summary
A late planting date reduced greenbug damage when included in the cropping system.
- Treatment
- a late planting datee5
- Interactor
- greenbugSchizaphis graminume5pest
- Outcome
- greenbug damagee5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e5“when either a NT, a late planting date, or a resistant-hybrid treatment was included as part of the cropping system, greenbug damage was reduced”
Claim · model-written summary
A resistant hybrid reduced greenbug damage when included in the cropping system.
- Treatment
- a resistant-hybrid treatmente5
- Interactor
- greenbugSchizaphis graminume5pest
- Outcome
- greenbug damagee5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e5“when either a NT, a late planting date, or a resistant-hybrid treatment was included as part of the cropping system, greenbug damage was reduced”
Claim · model-written summary
The combination of no tillage and a resistant hybrid was most effective in reducing damage, below the economic level.
- Treatment
- combination of NT and a resistant hybride6
- Outcome
- damagee6
- Direction
- most effective in reducinge6
- Qualifier
- below the economic levele6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e6“The combination of NT and a resistant hybrid was most effective in reducing damage, decreasing it considerably below the economic level”
Claim · model-written summary
A resistant hybrid ameliorated the effect of the late planting date on greenbug damage.
- Treatment
- Use of a resistant hybride7
- Outcome
- effect of the late planting datee7
- Direction
- amelioratede7
- Comparator
- late planting datee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e7“Use of a resistant hybrid ameliorated the effect of the late planting date”
Claim · model-written summary
The authors recommend these cropping techniques as valuable alternatives for management of greenbug in sorghum.
- Outcome
- alternatives for management of greenbuge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Managing Greenbug (Homoptera: Aphididae) in Sorghum”
e1“these techniques should provide valuable alternatives for management of greenbug”
Claim · model-written summary
Cropping practices can reduce greenbug damage on grain sorghum to below economic levels without insecticides.
- Taxon
- grain sorghum
Sorghum bicolore1 - Treatment
- cropping practicese1
- Outcome
- greenbug damagee1
- Direction
- reducee1
- Qualifier
- to below economic levels without insecticidese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cropping practices can reduce greenbug damage on grain sorghum to below economic levels without insecticides”
The same questions in other papers
tillage · pest · SorghumPositive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
3 papers more in this group
See all 7 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.