Abstract
Longidorus breviannulatus was detected in a field planted to corn after 13 years of potato. Nematode populations were maintained in this field in adjacent corn and potato plots for 2 years but did not increase significantly on either crop. Population levels increased until approximately 60 days after planting and then declined until the end of the growing season. Overwinter mortality was negligible. The vertical distribution of the nematode population changed during the course of the season. More nematodes were recovered from depths of 0-15 cm in early season samples and from depths of 15-30 cm in late season samples. Data indicated that this redistribution was due to nematode migration.
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Claims 7
Claim · model-written summary
Nematode populations did not significantly increase on either crop over two years.
- Taxon
- corn and potato
Solanum tuberosum
Zea mays subsp. mayse0 - Outcome
- Nematode populationse0
- Direction
- did not increasee0
- Value
- 2 yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematode populations were maintained in this field in adjacent corn and potato plots for 2 years but did not increase significantly on either crop”
Claim · model-written summary
Nematode populations increased until about 60 days after planting.
Not reportedTaxon
Verbatim
e0“Population levels increased until approximately 60 days after planting”
Claim · model-written summary
Nematode populations declined later in the season.
Not reportedTaxon
Verbatim
e0“then declined until the end of the growing season”
Claim · model-written summary
Overwinter mortality of nematodes was negligible.
Not reportedTaxon
Verbatim
e0“Overwinter mortality was negligible”
Claim · model-written summary
More nematodes occurred at 0-15 cm in early season.
Not reportedTaxon
Verbatim
e0“More nematodes were recovered from depths of 0-15 cm in early season samples”
Claim · model-written summary
More nematodes occurred at 15-30 cm in late season.
Not reportedTaxonDirection
Verbatim
e0“from depths of 15-30 cm in late season samples”
Claim · model-written summary
Vertical redistribution was attributed to nematode migration.
Not reportedTaxonDirection
Verbatim
e0“this redistribution was due to nematode migration”