Abstract
Greenhouse studies examined population densities of Meloidogyne incognita race 4 on soybean (Glycine max 'Davis') defoliated by larvae of soybean looper (Pseudoplusia indudens (Walker)). Plants were defoliated over a 2-week period beginning 5 weeks after seedlings were transplanted. Four groups of plants were infested with nematodes (5,000 eggs/pot) at 2-week intervals to allow harvesting of plants at 0, 2, 4, and 6 weeks postdefoliation (WPD). Plants in each group were harvested 4 weeks after nematode infestation. Root and nodule weights of defoliated plants were suppressed at 0 WPD, but differences were not detectable at 2, 4, and 6 WPD. Population densities of M. incognita were similar on defoliated and control plants at 0 WPD but were greater on defoliated plants at 4 and 6 WPD. Percentage hatching of eggs produced on the latter plants also was higher. Effects of insect-induced defoliation on development of M. incognita remained detectable even after soybean plant growth apparently returned to normal.
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Claims 6
Claim · model-written summary
Defoliation suppressed soybean root and nodule weights at zero weeks postdefoliation.
- Taxon
- soybean
Glycine maxt0 - Treatment
- defoliatede0
- Interactor
- Pseudoplusia includens
Chrysodeixis includenst0herbivore - Outcome
- Root and nodule weightse0
- Direction
- suppressede0
- Qualifier
- 0 WPDe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root and nodule weights of defoliated plants were suppressed at 0 WPD, but differences were not detectable at 2, 4, and 6 WPD.”
t0“Soybean Defoliated by Pseudoplusia includens”
Claim · model-written summary
Root and nodule weight differences were not detectable at two, four, and six weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- defoliatede0
- Outcome
- Root and nodule weightse0
- Direction
- differences were not detectablee0
- Qualifier
- 2, 4, and 6 WPDe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root and nodule weights of defoliated plants were suppressed at 0 WPD, but differences were not detectable at 2, 4, and 6 WPD.”
t0“Soybean Defoliated by Pseudoplusia includens”
Claim · model-written summary
Nematode population density was similar on defoliated and control soybean at zero weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- defoliatede0
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- Population densities of M. incognitae0
- Direction
- similare0
- Qualifier
- 0 WPDe0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Population densities of M. incognita were similar on defoliated and control plants at 0 WPD but were greater on defoliated plants at 4 and 6 WPD.”
t0“Soybean Defoliated by Pseudoplusia includens”
Claim · model-written summary
Nematode population density was greater on defoliated plants at four and six weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- defoliatede0
- Interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- Population densities of M. incognitae0
- Direction
- greatere0
- Qualifier
- 4 and 6 WPDe0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Population densities of M. incognita were similar on defoliated and control plants at 0 WPD but were greater on defoliated plants at 4 and 6 WPD.”
t0“Soybean Defoliated by Pseudoplusia includens”
Claim · model-written summary
Egg hatching percentage was higher on defoliated plants.
- Taxon
- soybeanGlycine maxt0
- Treatment
- defoliatedt0
- Interactor
- Meloidogyne incognitaMeloidogyne incognitat0pathogen
- Outcome
- Percentage hatching of eggse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage hatching of eggs produced on the latter plants also was higher.”
t0“Population Development of Meloidogyne incognita on Soybean Defoliated by Pseudoplusia includens”
Claim · model-written summary
Insect defoliation effects on nematode development persisted after apparent soybean growth recovery.
- Taxon
- soybeanGlycine maxe0
- Interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- development of M. incognita remained detectablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of insect-induced defoliation on development of M. incognita remained detectable even after soybean plant growth apparently returned to normal.”
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