Paper · 1991 · Journal of Biological Control

A preliminary report on the use of Amblyseius fallacis (Acari: Phytoseiidae) to control Panonychus ulmi (Acari: Tetranychidae) in Tianshui, Gansu Province

Yu‐Chun Wu; Y. L. Liu; L. Y. Zhang

6
claims
14
verbatim quotes
3
citations
3
research areas
—
Not open access

Abstract

Amblyseius fallacis was introduced into Tianshui city, Gansu Province in 1986. Mass reared A. fallacis was released in the apple orchards in mid to late June of 1987 and 1988 to control Panonyckus ulmi at a ratio of 1:50 (predatonprey). The population of the spider mite was reduced from 7.79 mites/leaf at its peak (July 31, 1987) and 21.84 mites/leaf (Aug.2, 1988) to 1.76 mites/leaf (1987) and 1.9 mites/leaf (1988),respective!y, 50-60 days after the releases, while the population on the control trees was 19.43/leaf (1987) and 44.15/Seaf (1988), respectively. Release of the predator also gave good controls of the overwintering eggs of the spider mite. The new growth shoots in the releasing orchard had 15.95 eggs/branch, while that in the chemical control orchard had 93.64 eggs/branch.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Predator release reduced spider mites from 7.79 to 1.76 mites per leaf in 1987.

Treatment
Amblyseius fallacist0
Interactor
spider mitee0pest
Second interactor
Amblyseius fallacist0biocontrol_agent
Outcome
population of the spider mitee0
Direction
reducede0
Value
1.76 mites/leafe0
Qualifier
7.79 mites/leafe0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“The population of the spider mite was reduced from 7.79 mites/leaf at its peak (July 31, 1987) and 21.84 mites/leaf (Aug.2, 1988) to 1.76 mites/leaf (1987) and 1.9 mites/leaf (1988),respective!y, 50-60 days after the releases”

✓ located verbatim in the source · abstract, characters 237–462 · show in text ↑
t0

“Amblyseius fallacis”

✓ located verbatim in the source · title, characters 35–54 · show in text ↑
e1

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Predator release reduced spider mites from 21.84 to 1.9 mites per leaf in 1988.

Treatment
Amblyseius fallacist0
Interactor
spider mitee0pest
Second interactor
Amblyseius fallacist0biocontrol_agent
Outcome
population of the spider mitee0
Direction
reducede0
Value
1.9 mites/leafe0
Qualifier
21.84 mites/leafe0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“The population of the spider mite was reduced from 7.79 mites/leaf at its peak (July 31, 1987) and 21.84 mites/leaf (Aug.2, 1988) to 1.76 mites/leaf (1987) and 1.9 mites/leaf (1988),respective!y, 50-60 days after the releases”

✓ located verbatim in the source · abstract, characters 237–462 · show in text ↑
t0

“Amblyseius fallacis”

✓ located verbatim in the source · title, characters 35–54 · show in text ↑
e1

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Control trees had 19.43 mites per leaf in 1987.

Outcome
population on the control treese0
Value
19.43/leafe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“population on the control trees was 19.43/leaf (1987) and 44.15/Seaf (1988)”

✓ located verbatim in the source · abstract, characters 474–549 · show in text ↑
t0

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Control trees had 44.15 mites per leaf in 1988.

Outcome
population on the control treese0
Value
44.15/Seafe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“population on the control trees was 19.43/leaf (1987) and 44.15/Seaf (1988)”

✓ located verbatim in the source · abstract, characters 474–549 · show in text ↑
t0

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Predator release controlled overwintering spider-mite eggs.

Treatment
Release of the predatore0
Interactor
spider mitee0pest
Outcome
overwintering eggs of the spider mitee0
Direction
good controlse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Release of the predator also gave good controls of the overwintering eggs of the spider mite”

✓ located verbatim in the source · abstract, characters 565–657 · show in text ↑
t0

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Released orchard shoots had 15.95 eggs per branch versus 93.64 in chemical control orchard.

Treatment
releasing orcharde0
Outcome
eggs/branche0
Value
15.95 eggs/branche0
Qualifier
93.64 eggs/branche0
Comparator
chemical control orcharde0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“The new growth shoots in the releasing orchard had 15.95 eggs/branch, while that in the chemical control orchard had 93.64 eggs/branch”

✓ located verbatim in the source · abstract, characters 659–793 · show in text ↑
t0

“apple orchards”

✓ located verbatim in the source · abstract, characters 123–137 · show in text ↑

biocontrol · pest · Malus domestica (apple)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 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.