Abstract
Soil and root samples were collected from tobacco (Nicotiana tabacum L.) fields in Prince Edward Island, Nova Scotia, and New Brunswick in 1970 and 1972, and also from P.E.I, in 1971 and 1974. Twenty genera of plant and soil nematodes were recovered. The dominant plant-parasitic species were Pratylenchus crenatus Loof, 1960 and P. penetrans (Cobb, 1917) Filipjev and Stek., 1941. These two species were often found in the same sample and were most numerous in P.E.I., though their numbers were lower than had been recorded previously in forage and vegetable surveys. Meloidogyne hapla Chitwood, 1949 was recovered in low numbers from some of the samples. Nematicide treatments usually reduced the number of Pratylenchus spp., but there were no significant increases in yield or quality of tobacco. Laboratory and greenhouse experiments indicated that M. hapla did not invade or reproduce in tobacco roots as quickly as did P. penetrans. Neither species influenced plant growth significantly. It was concluded that plant-parasitic nematodes are riot a major problem in tobacco in the Maritime provinces.
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 7
Claim · model-written summary
Twenty genera of plant and soil nematodes were recovered from tobacco fields.
- Taxon
- tobacco
Nicotiana tabacumt0 - Outcome
- genera of plant and soil nematodes were recoverede0
- Value
- Twenty generae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty genera of plant and soil nematodes were recovered”
t0“NEMATODES IN TOBACCO IN THE MARITIME PROVINCES OF CANADA”
Claim · model-written summary
The dominant parasitic nematodes were Pratylenchus crenatus and P. penetrans.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- Pratylenchus crenatus Loof, 1960Pratylenchus crenatuse0pathogen
- Outcome
- dominant plant-parasitic speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dominant plant-parasitic species were Pratylenchus crenatus Loof, 1960 and P. penetrans (Cobb, 1917) Filipjev and Stek., 1941”
t0“NEMATODES IN TOBACCO IN THE MARITIME PROVINCES OF CANADA”
Claim · model-written summary
Meloidogyne hapla occurred at low numbers in some samples.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- Meloidogyne hapla Chitwood, 1949
Meloidogyne haplae0pathogen - Outcome
- Meloidogyne hapla Chitwood, 1949 was recovered in low numberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Meloidogyne hapla Chitwood, 1949 was recovered in low numbers from some of the samples”
t0“NEMATODES IN TOBACCO IN THE MARITIME PROVINCES OF CANADA”
Claim · model-written summary
Nematicide usually reduced Pratylenchus numbers.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Nematicide treatmentse0
- Interactor
- Pratylenchus spp.
Pratylenchuse0pathogen - Outcome
- number of Pratylenchus spp.e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematicide treatments usually reduced the number of Pratylenchus spp.”
t0“NEMATODES IN TOBACCO IN THE MARITIME PROVINCES OF CANADA”
Claim · model-written summary
Nematicide did not significantly increase tobacco yield or quality.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Nematicide treatmentse1
- Outcome
- yield or quality of tobaccoe0
- Direction
- no significant increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no significant increases in yield or quality of tobacco”
e1“Nematicide treatments usually reduced the number of Pratylenchus spp.”
Claim · model-written summary
M. hapla invaded or reproduced in tobacco roots more slowly than P. penetrans.
- Taxon
- tobaccoNicotiana tabacume0
- Interactor
- M. haplaMeloidogyne haplae0pathogen
- Outcome
- M. hapla did not invade or reproduce in tobacco rootse0
- Direction
- did note0
- Comparator
- P. penetranse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. hapla did not invade or reproduce in tobacco roots as quickly as did P. penetrans”
Claim · model-written summary
Neither species significantly influenced tobacco plant growth.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- plant growthe0
- Direction
- Neither species influenced plant growth significantlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither species influenced plant growth significantly”
t0“NEMATODES IN TOBACCO IN THE MARITIME PROVINCES OF CANADA”
The same questions in other papers
insecticide · quality: general · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- no effect
- no effect
- no effect
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.