Abstract
Single and combined release of Phytoseiulus persimilis Athias-Henriot and Amblyseius swirskii Athias-Henriot was tested for control of Tetranychus urticae Koch and Frankliniella occidentalis (Pergand) on rose plants. The efficacy of the predators was evaluated at predator:prey ratios of 1:2, 1:5, 1:10, 1:20, 1:50 and 1:100 in laboratory experiments, and release rates of 20, 40 and 100 predators per m2 in microcosm experiments. In all treatments, release of predator(s) significantly decreased T. urticae population and larval population of F. occidentalis compared to the control treatment. In laboratory experiment, the most suppression of T. urticae occurred in predator:prey ratios of 1:2 and 1:5 that decreased 95% and 93.5% of T. urticae after 24 h, respectively. In microcosm experiments, release rates of 100 and 40 P. persimilis per m2 eradicated (100%) the T. urticae population at 30 days after releasing the predator. Based on our findings, P. persimilis and A. swirskii can be released simultaneously at the rates of 20 and 100 individuals per m2, respectively for successful control of T. urticae and F. occidentalis on rose plants.
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Claims 6
Claim · model-written summary
Predator releases significantly decreased T. urticae populations relative to controls.
- Taxon
- rose plantst0
- Treatment
- release of predator(s)e0
- Interactor
- T. urticae
.jpg?width=60)
Tetranychus urticaee0pest - Outcome
- T. urticae populatione0
- Direction
- decreasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In all treatments, release of predator(s) significantly decreased T. urticae population and larval population of F. occidentalis compared to the control treatment.”
t0“rose plants”
Claim · model-written summary
Predator releases significantly decreased F. occidentalis larvae relative to controls.
- Taxon
- rose plantst0
- Treatment
- release of predator(s)e0
- Interactor
- F. occidentalis
Frankliniella occidentalise0pest - Outcome
- larval population of F. occidentalise0
- Direction
- decreasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all treatments, release of predator(s) significantly decreased T. urticae population and larval population of F. occidentalis compared to the control treatment.”
t0“rose plants”
Claim · model-written summary
A 1:2 predator to prey ratio reduced T. urticae by 95% after 24 hours.
- Taxon
- rose plantst0
- Treatment
- 1:2e0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- T. urticaee0
- Direction
- decreasede0
- Value
- 95%e0
- Qualifier
- after 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“predator:prey ratios of 1:2 and 1:5 that decreased 95% and 93.5% of T. urticae after 24 h”
t0“rose plants”
Claim · model-written summary
A 1:5 predator to prey ratio reduced T. urticae by 93.5% after 24 hours.
- Taxon
- rose plantst0
- Treatment
- 1:5e0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- T. urticaee0
- Direction
- decreasede0
- Value
- 93.5%e0
- Qualifier
- after 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“predator:prey ratios of 1:2 and 1:5 that decreased 95% and 93.5% of T. urticae after 24 h”
t0“rose plants”
Claim · model-written summary
Releasing 100 P. persimilis per square metre eradicated T. urticae after 30 days.
- Taxon
- rose plantst0
- Treatment
- 100 and 40 P. persimilis per m2e0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Second interactor
- P. persimilis
Phytoseiulus persimilise0biocontrol_agent - Outcome
- T. urticae populatione0
- Direction
- eradicatede0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“release rates of 100 and 40 P. persimilis per m2 eradicated (100%) the T. urticae population at 30 days after releasing the predator”
t0“rose plants”
Claim · model-written summary
The authors recommend simultaneous release of P. persimilis at 20 and A. swirskii at 100 per square metre to control both rose pests.
- Taxon
- rose plantse0
- Treatment
- P. persimilis and A. swirskii can be released simultaneously at the rates of 20 and 100 individuals per m2e0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Second interactor
- F. occidentalisFrankliniella occidentalise0pest
- Outcome
- successful control of T. urticae and F. occidentalise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. persimilis and A. swirskii can be released simultaneously at the rates of 20 and 100 individuals per m2, respectively for successful control of T. urticae and F. occidentalis on rose plants”
The same questions in other papers
Phytoseiulus persimilis · Tetranychus urticae · RosaResults agree
1 paper in the same direction as this paper
- positive
biocontrol · Frankliniella occidentalis · RosaResults agree
1 paper in the same direction as this paper
- positive
biocontrol · Tetranychus urticae · RosaResults agree
2 papers in the same direction as this paper
- positive
- positive
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.