Abstract
Abstract The primary insect pests in Canadian carrot production are carrot rust fly ( Psila rosae (Fabricius); Diptera: Psilidae) and carrot weevil ( Listronotus oregonensis (LeConte); Coleoptera: Curculionidae). An integrated pest management programme for these pests exists in Québec and Ontario, where most Canadian carrot ( Daucus carota subsp. sativus (Hoffmann) Schübler and Martens; Apiaceae) production occurs. As current carrot insect integrated pest management recommendations are decades old, laboratory and field trials were performed to evaluate the carrot insect integrated pest management recommendations. Carrot weevil populations were evaluated in the laboratory for resistance to the primary product used for control, phosmet. Ontario carrot weevils exhibited negligible mortality when exposed to phosmet compared with > 80% mortality in a susceptible strain. Using data from a carrot integrated pest management programme, weather data was correlated with monitoring and damage data of both pests from historical records. Increased carrot weevil captures were weakly related to increased damage. Carrot weevil damage was reduced by following integrated pest management recommendations in one of three trials. No strong relationship between weather and carrot rust fly captures was identified, suggesting the degree day model for carrot rust fly activity needs revision. In field trials, carrot rust fly damage was negligible despite integrated pest management recommendations for insecticide applications. Future research should include improving carrot weevil monitoring and control and increasing the carrot rust fly action threshold to optimise insecticide applications.
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Claims 8
Claim · model-written summary
Ontario carrot weevils had negligible phosmet mortality compared with over 80% for susceptible weevils.
- Taxon
- carrot
Daucus carotat0 - Treatment
- phosmete0
- Interactor
- carrot weevils
Listronotus oregonensise0pest - Outcome
- carrot weevils exhibited negligible mortalitye0
- Direction
- negligiblee0
- Qualifier
- > 80% mortalitye0
- Comparator
- susceptible straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ontario carrot weevils exhibited negligible mortality when exposed to phosmet compared with > 80% mortality in a susceptible strain”
t0“Canadian carrot production”
Claim · model-written summary
More carrot weevil captures were weakly associated with more damage.
- Taxon
- carrotDaucus carotat0
- Interactor
- carrot weevilListronotus oregonensise0pest
- Outcome
- damagee0
- Direction
- increasede0
- Qualifier
- weakly relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased carrot weevil captures were weakly related to increased damage”
t0“Canadian carrot production”
Claim · model-written summary
Following IPM recommendations reduced weevil damage in one of three trials.
- Taxon
- carrotDaucus carotat0
- Treatment
- following integrated pest management recommendationse0
- Interactor
- Carrot weevilListronotus oregonensise0pest
- Outcome
- Carrot weevil damagee0
- Direction
- reducede0
- Value
- one of three trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carrot weevil damage was reduced by following integrated pest management recommendations in one of three trials”
t0“Canadian carrot production”
Claim · model-written summary
Weather had no strong relation to carrot rust fly captures.
- Taxon
- carrotDaucus carotat0
- Interactor
- carrot rust fly
Chamaepsila rosaee0pest - Outcome
- carrot rust fly capturese0
- Qualifier
- No strong relationship between weathere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No strong relationship between weather and carrot rust fly captures was identified”
t0“Canadian carrot production”
Claim · model-written summary
Carrot rust fly damage was negligible in field trials despite insecticide recommendations.
- Taxon
- carrotDaucus carotae0
- Interactor
- carrot rust flyChamaepsila rosaee0pest
- Outcome
- carrot rust fly damagee0
- Direction
- negligiblee0
- Setting
- field trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field trials, carrot rust fly damage was negligible despite integrated pest management recommendations for insecticide applications”
t0“Canadian carrot production”
Claim · model-written summary
The authors recommended revising the carrot rust fly degree-day model.
- Taxon
- carrotDaucus carotae0
- Interactor
- carrot rust flyChamaepsila rosaee0pest
- Outcome
- degree day model for carrot rust fly activity needs revisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting the degree day model for carrot rust fly activity needs revision”
t0“Canadian carrot production”
Claim · model-written summary
The authors recommended improving weevil monitoring and control.
- Taxon
- carrotDaucus carotae0
- Interactor
- carrot weevilListronotus oregonensise0pest
- Outcome
- improving carrot weevil monitoring and controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Future research should include improving carrot weevil monitoring and control”
t0“Canadian carrot production”
Claim · model-written summary
The authors recommended increasing the rust fly action threshold.
- Taxon
- carrotDaucus carotae0
- Interactor
- carrot rust flyChamaepsila rosaee0pest
- Outcome
- increasing the carrot rust fly action thresholde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the carrot rust fly action threshold to optimise insecticide applications”
t0“Canadian carrot production”