Abstract
Abstract In recent years potato seed crops at Pukekohe have shown high levels of leaf roll virus infection, in spite of the use of insecticides. Laboratory and field tests have shown that although insecticides control aphid populations, they do not kill viruliferous insects quickly enough to prevent transmission of leaf roll to potato. High levels of leaf roll were seen in plots of potatoes that had emerged in a peak of aphid flight activity in the second half of November 1969, whereas plots emerging later were relatively free of virus. The evidence suggests that most of the virus seen in seed potato fields is brought there by viruliferous aphids migrating from infected crops in the neighbourhood. Isolation of seed fields from the Pukekohe district is advocated.
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Claims 6
Claim · model-written summary
Insecticides controlled aphid populations.
- Taxon
- potato
Solanum tuberosume0t0 - Treatment
- insecticidese0
- Interactor
- aphide0pest
- Outcome
- aphid populationse0
- Direction
- controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although insecticides control aphid populations”
t0“potato leaf roll virus”
Claim · model-written summary
Insecticides did not kill viruliferous insects fast enough to prevent potato leaf roll transmission.
- Taxon
- potatoSolanum tuberosume0t0
- Interactor
- viruliferous insectse0pest
- Outcome
- transmission of leaf roll to potatoe0
- Direction
- do not kille0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they do not kill viruliferous insects quickly enough to prevent transmission of leaf roll to potato”
t0“potato leaf roll virus”
e1“although insecticides control aphid populations”
Claim · model-written summary
Potatoes emerging during peak aphid flight had high leaf roll incidence.
- Taxon
- potatoesSolanum tuberosume0t0
- Interactor
- aphide0pest
- Outcome
- levels of leaf rolle0
- Direction
- Highe0
- Setting
- plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High levels of leaf roll were seen in plots of potatoes that had emerged in a peak of aphid flight activity in the second half of November 1969”
t0“potato leaf roll virus”
Claim · model-written summary
Later-emerging potatoes were relatively free of virus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plots emerging later were relatively free of virus”
t0“potato leaf roll virus”
Claim · model-written summary
The authors infer migrating viruliferous aphids bring most virus into seed potato fields.
- Taxon
- potatoSolanum tuberosume0t0
- Interactor
- viruliferous aphidse0pest
- Outcome
- virus seen in seed potato fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most of the virus seen in seed potato fields is brought there by viruliferous aphids migrating from infected crops in the neighbourhood”
t0“potato leaf roll virus”
Claim · model-written summary
The authors advocate isolating seed fields from Pukekohe district.
- Taxon
- potatoSolanum tuberosume0t0
- Outcome
- Isolation of seed fields from the Pukekohe districte0
- Setting
- Pukekohe districte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolation of seed fields from the Pukekohe district is advocated”
t0“potato leaf roll virus”
The same questions in other papers
insecticide · disease · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →insecticide · pest · Solanum tuberosum (potato)Positive and negative results
19 papers in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- no effect
27 papers more in this group
See all 31 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.