Abstract
Populations of mite predators and Tetranychus urticae (Tetranychidae) occurring in peach orchards on two farms at Leeton, New South Wales, were monitored during 1987/88. In both orchards the key pest Cydia molesta (Busck) (Tortricidae) was controlled by a pheromonal mating disruption strategy which avoided the use of broad-spectrum insecticides. During both years substantial populations of a native predatory mite, Amblyseius victoriensis were associated with an absence or very low populations of T. urticae from mid-summer until leaf fall. During spring 1987 some control of T. urticae was provided by a suite of predatory insects. Late spring applications of fungicide delayed development of A. victoriensis populations and a mid-summer miticide spray delayed establishment of the predator. Typhlodromus occidentalis occurred only when A. victoriensis populations were low or eradicated by sprays. During autumn, 1987 A. victoriensis occurred on orchard weeds but populations declined to a low level during winter. Substantial overwintering populations of reproductive T. urticae occurred on weeds and invaded the trees at bud burst. The generalist feeding behaviour of A. victoriensis is considered to be the key to the success of this predator. Dependence on biological control for T. urticae management is considered to be a practical option for southern New South Wales peach orchardists.
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Claims 8
Claim · model-written summary
Amblyseius victoriensis populations coincided with absent or very low T. urticae populations.
- Taxon
- peach
Prunus persicat0 - Interactor
- T. urticae
.jpg?width=60)
Tetranychus urticaee0pest - Second interactor
- Amblyseius victoriensise0biocontrol_agent
- Outcome
- absence or very low populations of T. urticaee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“substantial populations of a native predatory mite, Amblyseius victoriensis were associated with an absence or very low populations of T. urticae from mid-summer until leaf fall”
t0“Peach”
Claim · model-written summary
Predatory insects provided some spring control of T. urticae.
- Taxon
- peachPrunus persicat0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Second interactor
- predatory insectse0biocontrol_agent
- Outcome
- some control of T. urticaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During spring 1987 some control of T. urticae was provided by a suite of predatory insects”
t0“Peach”
Claim · model-written summary
Late spring fungicide delayed A. victoriensis population development.
- Taxon
- peachPrunus persicat0
- Treatment
- applications of fungicidee0
- Interactor
- A. victoriensise0biocontrol_agent
- Outcome
- development of A. victoriensis populationse0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late spring applications of fungicide delayed development of A. victoriensis populations”
t0“Peach”
Claim · model-written summary
A midsummer miticide delayed predator establishment.
- Taxon
- peachPrunus persicat0
- Treatment
- mid-summer miticide spraye0
- Outcome
- establishment of the predatore0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a mid-summer miticide spray delayed establishment of the predator”
t0“Peach”
Claim · model-written summary
Typhlodromus occidentalis occurred only when A. victoriensis was low or removed by sprays.
- Taxon
- peachPrunus persicat0
- Interactor
- Typhlodromus occidentalisGalendromus occidentalise0biocontrol_agent
- Second interactor
- A. victoriensise0biocontrol_agent
- Outcome
- Typhlodromus occidentalis occurrede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Typhlodromus occidentalis occurred only when A. victoriensis populations were low or eradicated by sprays”
t0“Peach”
Claim · model-written summary
A. victoriensis occurred on orchard weeds in autumn but declined over winter.
- Taxon
- peachPrunus persicat0
- Interactor
- A. victoriensise0biocontrol_agent
- Outcome
- A. victoriensis occurred on orchard weeds but populations declined to a low level during wintere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During autumn, 1987 A. victoriensis occurred on orchard weeds but populations declined to a low level during winter”
t0“Peach”
Claim · model-written summary
Reproductive T. urticae overwintered on weeds and invaded peach trees at bud burst.
- Taxon
- peachPrunus persicat0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- overwintering populations of reproductive T. urticae occurred on weeds and invaded the trees at bud burste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Substantial overwintering populations of reproductive T. urticae occurred on weeds and invaded the trees at bud burst”
t0“Peach”
Claim · model-written summary
The authors consider biological control practical for T. urticae management in southern New South Wales peach orchards.
- Taxon
- peachPrunus persicae0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- Dependence on biological control for T. urticae managemente0
- Setting
- southern New South Walese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dependence on biological control for T. urticae management is considered to be a practical option for southern New South Wales peach orchardists”
The same questions in other papers
insecticide · growth · Prunus persica (peach)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
application · growth · Prunus persica (peach)Positive and negative results
8 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 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.