Abstract
Survivorship and development rates were determined for cohorts of noctuid larvae caged on irrigated and dryland ‘Braxton’ soybean plants in the Delta of Mississippi. In September 1985, larval survival of fall armyworm, Spodoptera frugiperda (J. E. Smith), was higher in irrigated than in dryland soybean, although no differences were observed for rate of larval development. In July 1986, survival of fall armyworm and soybean looper, Pseudoplusia includens (Walker), was higher and development faster in irrigated than in dryland soybean, whereas no differences were observed for corn earworm, Helicoverpa zea (Boddie), during a period of high temperatures. In September 1986, survival and development rates were similar for these three species. In a study conducted with soybean planted in a nursery in July 1987, survival and rate of larval development of soybean looper, but not beet armyworm, Spodoptera exigua (Hübner), were positively correlated with canopy closure. Irrigation of soybean resulted in a cooler canopy environment or higher leaf water content or both. Irrigation increased survival (in the absence of predators) and optimized larval development of some noctuids, whereas the lack of irrigation had no effect or was favorable for larval development of other noctuid species.
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Claims 14
Claim · model-written summary
In September 1985 fall armyworm survival was higher on irrigated than dryland soybean.
- Taxon
- soybean
Glycine maxe0 - Treatment
- irrigatede0
- Interactor
- Spodoptera frugiperda (J. E. Smith)
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Spodoptera frugiperdae0pest - Outcome
- larval survival of fall armyworme0
- Direction
- highere0
- Qualifier
- September 1985e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In September 1985, larval survival of fall armyworm, Spodoptera frugiperda (J. E. Smith), was higher in irrigated than in dryland soybean”
Claim · model-written summary
In September 1985 fall armyworm development rate did not differ between irrigated and dryland soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatede0
- Interactor
- Spodoptera frugiperda (J. E. Smith)Spodoptera frugiperdae0pest
- Outcome
- rate of larval developmente0
- Direction
- no differencese0
- Qualifier
- September 1985e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In September 1985, larval survival of fall armyworm, Spodoptera frugiperda (J. E. Smith), was higher in irrigated than in dryland soybean, although no differences were observed for rate of larval development”
Claim · model-written summary
In July 1986 fall armyworm survival was higher on irrigated soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatede0
- Interactor
- fall armywormSpodoptera frugiperdae0pest
- Outcome
- survival of fall armyworme0
- Direction
- highere0
- Qualifier
- July 1986e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In July 1986, survival of fall armyworm and soybean looper, Pseudoplusia includens (Walker), was higher and development faster in irrigated than in dryland soybean”
e1“Spodoptera frugiperda (J. E. Smith)”
Claim · model-written summary
In July 1986 soybean looper survival was higher on irrigated soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatede0
- Interactor
- soybean looper
Chrysodeixis includense0pest - Outcome
- survival of fall armyworm and soybean loopere0
- Direction
- highere0
- Qualifier
- July 1986e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In July 1986, survival of fall armyworm and soybean looper, Pseudoplusia includens (Walker), was higher and development faster in irrigated than in dryland soybean”
Claim · model-written summary
In July 1986 fall armyworm developed faster on irrigated soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatede0
- Interactor
- fall armywormSpodoptera frugiperdae0pest
- Outcome
- developmente0
- Direction
- fastere0
- Qualifier
- July 1986e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In July 1986, survival of fall armyworm and soybean looper, Pseudoplusia includens (Walker), was higher and development faster in irrigated than in dryland soybean”
Claim · model-written summary
In July 1986 soybean looper developed faster on irrigated soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatede0
- Interactor
- soybean looperChrysodeixis includense0pest
- Outcome
- developmente0
- Direction
- fastere0
- Qualifier
- July 1986e0
- Comparator
- dryland soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In July 1986, survival of fall armyworm and soybean looper, Pseudoplusia includens (Walker), was higher and development faster in irrigated than in dryland soybean”
Claim · model-written summary
In September 1986 survival was similar for fall armyworm, soybean looper and corn earworm under the irrigation treatments.
- Taxon
- soybeanGlycine maxe1
- Treatment
- irrigatede1
- Outcome
- survivale0
- Direction
- similare0
- Qualifier
- September 1986e0
- Comparator
- drylande1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In September 1986, survival and development rates were similar for these three species”
e1“irrigated and dryland ‘Braxton’ soybean plants”
e2“fall armyworm and soybean looper, Pseudoplusia includens (Walker)”
e3“corn earworm, Helicoverpa zea (Boddie)”
Claim · model-written summary
In September 1986 development rates were similar for fall armyworm, soybean looper and corn earworm.
- Taxon
- soybeanGlycine maxe1
- Treatment
- irrigatede1
- Outcome
- development ratese0
- Direction
- similare0
- Qualifier
- September 1986e0
- Comparator
- drylande1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In September 1986, survival and development rates were similar for these three species”
e1“irrigated and dryland ‘Braxton’ soybean plants”
Claim · model-written summary
Soybean looper survival was positively correlated with canopy closure in 1987.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- canopye0
- Interactor
- soybean looperChrysodeixis includense0pest
- Outcome
- survivale0
- Direction
- positively correlatede0
- Setting
- nurserye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a study conducted with soybean planted in a nursery in July 1987, survival and rate of larval development of soybean looper, but not beet armyworm, Spodoptera exigua (Hübner), were positively correlated with canopy closure”
Claim · model-written summary
Soybean looper development rate was positively correlated with canopy closure in 1987.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- canopye0
- Interactor
- soybean looperChrysodeixis includense0pest
- Outcome
- rate of larval developmente0
- Direction
- positively correlatede0
- Setting
- nurserye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a study conducted with soybean planted in a nursery in July 1987, survival and rate of larval development of soybean looper, but not beet armyworm, Spodoptera exigua (Hübner), were positively correlated with canopy closure”
Claim · model-written summary
Beet armyworm survival was not positively correlated with canopy closure.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- canopye0
- Interactor
- beet armyworm
Spodoptera exiguae0pest - Outcome
- survivale0
- Direction
- note0
- Setting
- nurserye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“survival and rate of larval development of soybean looper, but not beet armyworm, Spodoptera exigua (Hübner), were positively correlated with canopy closure”
e1“soybean planted in a nursery”
Claim · model-written summary
Beet armyworm development rate was not positively correlated with canopy closure.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- canopye0
- Interactor
- beet armywormSpodoptera exiguae0pest
- Outcome
- rate of larval developmente0
- Direction
- note0
- Setting
- nurserye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“survival and rate of larval development of soybean looper, but not beet armyworm, Spodoptera exigua (Hübner), were positively correlated with canopy closure”
e1“soybean planted in a nursery”
Claim · model-written summary
Irrigation produced a cooler soybean canopy or higher leaf water content or both.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Irrigatione0
- Outcome
- canopy environmente0
- Direction
- coolere0
- Qualifier
- or higher leaf water content or bothe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation of soybean resulted in a cooler canopy environment or higher leaf water content or both”
Claim · model-written summary
Irrigation may have raised soybean leaf water content.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Irrigatione0
- Outcome
- leaf water contente0
- Direction
- highere0
- Qualifier
- or bothe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation of soybean resulted in a cooler canopy environment or higher leaf water content or both”
The same questions in other papers
irrigation · growth · Glycine max (soybean)Positive and negative results
34 papers in the same direction as this paper · 79 in the opposite direction
- positive
- positive
- positive
110 papers more in this group
See all 114 papers →irrigation · Chrysodeixis includens · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
irrigation · survival · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
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.