Abstract
Laboratory assays were conducted to determine effect of host plant on mortality of the southern corn rootworm, Diabrotica undecimpunctata howardi Barber, from the entomopathogenic nematodes Steinemema carpocapsae Weiser and Heterorhabditis bacteriophora Poinar and on nematode progeny production. Mortality of D. u. howardi , as well as nematode progeny production, varied according to the host plant on which the rootworms had fed. Mortality from S. carpocapsae was lower for rootworms that had fed on peanut roots than for rootworms that had fed on squash or com roots. Mortality from H. bacteriophora was lower for rootworms that had been reared on corn roots than for rootworms that had fed on peanut or squash roots. For both nematodes, progeny production from larvae that had fed on squash roots was significantly lower than progeny production from rootworms that had fed on com or peanut roots. Host plant effects involving entomopathogenic nematodes and a soil-inhabiting stage of an insect pest have not been previously demonstrated.
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Claims 3
Claim · model-written summary
Mortality of the rootworm from S. carpocapsae was lower after feeding on peanut roots than on squash or corn roots.
- Taxon
- peanut
Arachis hypogaeae1 - Treatment
- peanut rootse1
- Interactor
- D. u. howardie0pest
- Second interactor
- S. carpocapsaee1biocontrol_agent
- Outcome
- Mortality from S. carpocapsaee1
- Direction
- lowere1
- Comparator
- squash or com rootse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mortality of D. u. howardi , as well as nematode progeny production, varied according to the host plant on which the rootworms had fed”
e1“Mortality from S. carpocapsae was lower for rootworms that had fed on peanut roots than for rootworms that had fed on squash or com roots”
Claim · model-written summary
Mortality from H. bacteriophora was lower in rootworms reared on corn roots than on peanut or squash roots.
- Taxon
- corn
Zea mays subsp. mayse2 - Treatment
- corn rootse2
- Interactor
- D. u. howardie0pest
- Second interactor
- H. bacteriophora
_Poinar%2C_1975.jpg?width=60)
Heterorhabditis bacteriophorae2biocontrol_agent - Outcome
- Mortality from H. bacteriophorae2
- Direction
- lowere2
- Comparator
- peanut or squash rootse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poinar%2C_1975.jpg?width=500)
Verbatim
e0“Mortality of D. u. howardi , as well as nematode progeny production, varied according to the host plant on which the rootworms had fed”
e2“Mortality from H. bacteriophora was lower for rootworms that had been reared on corn roots than for rootworms that had fed on peanut or squash roots”
Claim · model-written summary
Progeny production of the nematodes was significantly lower from larvae fed on squash roots than from larvae fed on corn or peanut roots.
Verbatim
e3“For both nematodes, progeny production from larvae that had fed on squash roots was significantly lower than progeny production from rootworms that had fed on com or peanut roots”
The same questions in other papers
Zea mays subsp. mays · pest · Zea mays (maize)Positive and negative results
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See all 53 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.