Abstract
Continuous use of previous generation acaricides in okra [Abelmoschus esculentus (L.) Moench] has increased resistance to pesticides and pest resurgence. The project was undertaken to evaluate a new acaricide, fenazaquin 10 EC, for effective control of two-spotted spider mites [Tetranychus urticae Koch (Acari: Tetranychidae)] in pot culture and under field conditions. Fenazaquin was used at 75, 100, 125, or 150 g·ha−1 a.i. and compared with the standard acaricide dicofol 18.5 EC at 250 g·ha−1 a.i. and an untreated control. The adulticide bioassay, ovicidal action to T. urticae and safety of Dwarf honey bees (Apis florea Fabricius), was performed under laboratory conditions. Pot culture and two field trials were conducted to evaluate efficacy. Impact on okra yield and phytotoxicity were determined. The LC50 was 1.440 mg·L−1 and LT50 at 1.50 mg·L−1 was ˜8 hours. Fenazaquin produced more than 70% egg mortality in all doses for T. urticae. Fenazaquin at 125 and 150 g·ha−1 a.i. caused the highest reduction in numbers of mites in pot culture and field experiments. Fruit yields (9.89 Mt·ha−1, 10.59 Mt·ha−1) and cost–benefit ratio (1:3.25, 1:3.48) were higher in fenazaquin-treated plants at 150 g·ha−1 a.i in field experiments. No test doses were phytotoxic and all doses were relatively safe to Dwarf honey bees.
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Claims 9
Claim · model-written summary
Fenazaquin adulticide LC50 was 1.440 mg·L−1.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentuse1 - Outcome
- LC50e0
- Value
- 1.440 mg·L−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The LC50 was 1.440 mg·L−1 and LT50 at 1.50 mg·L−1 was ˜8 hours.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Fenazaquin LT50 at 1.50 mg·L−1 was about eight hours.
- Taxon
- okraAbelmoschus esculentuse1
- Outcome
- LT50e0
- Value
- ˜8 hourse0
- Qualifier
- 1.50 mg·L−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LC50 was 1.440 mg·L−1 and LT50 at 1.50 mg·L−1 was ˜8 hours.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Fenazaquin caused over 70% T. urticae egg mortality at every tested dose.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- Fenazaquine0
- Interactor
- T. urticae
.jpg?width=60)
Tetranychus urticaee0pest - Outcome
- egg mortalitye0
- Direction
- more thane0
- Value
- 70%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Fenazaquin produced more than 70% egg mortality in all doses for T. urticae.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Fenazaquin at 125 g·ha−1 caused the highest mite reduction in pot and field experiments.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- Fenazaquin at 125e0
- Outcome
- numbers of mitese0
- Direction
- highest reductione0
- Setting
- pot culture and field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fenazaquin at 125 and 150 g·ha−1 a.i. caused the highest reduction in numbers of mites in pot culture and field experiments.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Fenazaquin at 150 g·ha−1 caused the highest mite reduction in pot and field experiments.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- 150 g·ha−1 a.i.e0
- Outcome
- numbers of mitese0
- Direction
- highest reductione0
- Setting
- pot culture and field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fenazaquin at 125 and 150 g·ha−1 a.i. caused the highest reduction in numbers of mites in pot culture and field experiments.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Field fruit yield was higher with 150 g·ha−1 fenazaquin, with yields of 9.89 and 10.59 Mt·ha−1.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- fenazaquin-treated plants at 150 g·ha−1 a.ie0
- Outcome
- Fruit yieldse0
- Direction
- highere0
- Value
- 9.89 Mt·ha−1, 10.59 Mt·ha−1e0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yields (9.89 Mt·ha−1, 10.59 Mt·ha−1) and cost–benefit ratio (1:3.25, 1:3.48) were higher in fenazaquin-treated plants at 150 g·ha−1 a.i in field experiments.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
Field cost–benefit ratio was higher with 150 g·ha−1 fenazaquin, at 1:3.25 and 1:3.48.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- fenazaquin-treated plants at 150 g·ha−1 a.ie0
- Outcome
- cost–benefit ratioe0
- Direction
- highere0
- Value
- 1:3.25, 1:3.48e0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yields (9.89 Mt·ha−1, 10.59 Mt·ha−1) and cost–benefit ratio (1:3.25, 1:3.48) were higher in fenazaquin-treated plants at 150 g·ha−1 a.i in field experiments.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
No fenazaquin test dose was phytotoxic to okra.
- Taxon
- okraAbelmoschus esculentuse1
- Outcome
- No test doses were phytotoxice0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No test doses were phytotoxic and all doses were relatively safe to Dwarf honey bees.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
Claim · model-written summary
All fenazaquin doses were relatively safe to Dwarf honey bees.
- Taxon
- okraAbelmoschus esculentuse1
- Outcome
- relatively safe to Dwarf honey beese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No test doses were phytotoxic and all doses were relatively safe to Dwarf honey bees.”
e1“okra [Abelmoschus esculentus (L.) Moench]”
The same questions in other papers
fenazaquin · Tetranychus urticae · Abelmoschus esculentus (okra)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
fenazaquin · pest · Abelmoschus esculentus (okra)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.