Abstract
Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), feeding injury results in discoloration and a rough texture on cabbage, Brassica oleracea capitata (L.), leaves, and damage may occur deep inside the head. It has become a key pest of cabbage in the United States and many other countries. Previous studies have indicated poor control using insecticides. The present study identified imidacloprid drenches and sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin. However, additional tests with foliar sprays of dimethoate and acetamiprid indicated there was not an ideal crop stage (precupping, cupping, or postcupping) at which either insecticide could be applied for reliable control of T. tabaci, possibly because of multiple flights of thrips into the crop or the asynchrony of flights and susceptible crop stages. In tests in a commercial field, a soil drench of imidacloprid 4 wk after transplanting reduced the number of damaged leaves in the head by 32%, whereas five sprays of acetamiprid reduced damage by 51%. Combining both insecticide regimes reduced damage by 85%, but resulted in a very costly management program. Cabbage varieties varied considerably in susceptibility with some having negligible thrips injury, regardless of being treated with an insecticide. Planting date affected susceptibility of cabbage to some degree, but not as much as other tactics. Overall, these studies indicate that increased emphasis should be placed on breeding cabbages to be resistant to T. tabaci as the foundation for its management.
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Claims 13
Claim · model-written summary
Imidacloprid drenches outperformed lambda-cyhalothrin for thrips control.
- Treatment
- imidacloprid drenchese0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lambda-cyhalothrine0
Not reportedTaxon
Verbatim
e0“imidacloprid drenches and sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin”
t0“Cabbage”
Claim · model-written summary
A acetamiprid spray outperformed lambda-cyhalothrin for thrips control.
- Taxon
- Cabbage
Brassica oleracea var. capitatat0 - Treatment
- acetamipride0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lambda-cyhalothrine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin”
t0“Cabbage”
Claim · model-written summary
A dimethoate spray outperformed lambda-cyhalothrin for thrips control.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- dimethoatee0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lambda-cyhalothrine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin”
t0“Cabbage”
Claim · model-written summary
A spinosad spray outperformed lambda-cyhalothrin for thrips control.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- spinosade0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lambda-cyhalothrine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin”
t0“Cabbage”
Claim · model-written summary
A imidacloprid spray outperformed lambda-cyhalothrin for thrips control.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- imidaclopride0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lambda-cyhalothrine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays of acetamiprid, dimethoate, spinosad, and imidacloprid as insecticides that performed better than the industry standard, lambda-cyhalothrin”
t0“Cabbage”
Claim · model-written summary
Neither dimethoate nor acetamiprid had a reliable crop stage for control.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- dimethoate and acetamipride0
- Interactor
- T. tabaci
Thrips tabacie0pest - Outcome
- reliable control of T. tabacie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar sprays of dimethoate and acetamiprid indicated there was not an ideal crop stage (precupping, cupping, or postcupping) at which either insecticide could be applied for reliable control of T. tabaci”
t0“Cabbage”
Claim · model-written summary
An imidacloprid soil drench reduced damaged head leaves by 32%.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- a soil drench of imidacloprid 4 wk after transplantinge0
- Outcome
- number of damaged leaves in the heade0
- Direction
- reducede0
- Value
- 32%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a soil drench of imidacloprid 4 wk after transplanting reduced the number of damaged leaves in the head by 32%”
t0“Cabbage”
Claim · model-written summary
Five acetamiprid sprays reduced damage by 51%.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- five sprays of acetamipride0
- Outcome
- damagee0
- Direction
- reducede0
- Value
- 51%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five sprays of acetamiprid reduced damage by 51%”
t0“Cabbage”
Claim · model-written summary
Combining both insecticide regimes reduced damage by 85%.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- Combining both insecticide regimese0
- Outcome
- damagee0
- Direction
- reducede0
- Value
- 85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combining both insecticide regimes reduced damage by 85%”
t0“Cabbage”
Claim · model-written summary
The combined program was very costly.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Outcome
- very costly management programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in a very costly management program”
t0“Cabbage”
Claim · model-written summary
Cabbage varieties differed in thrips susceptibility; some had negligible injury regardless of insecticide.
- Taxon
- CabbageBrassica oleracea var. capitatae0
- Material
- Cabbage varietiese0
- Outcome
- susceptibilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cabbage varieties varied considerably in susceptibility with some having negligible thrips injury, regardless of being treated with an insecticide”
Claim · model-written summary
Planting date affected cabbage susceptibility to some degree.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- Planting datee0
- Outcome
- susceptibilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting date affected susceptibility of cabbage to some degree”
Claim · model-written summary
The authors recommend resistant cabbage breeding as the foundation of thrips management.
- Taxon
- cabbagesBrassica oleracea var. capitatae0
- Interactor
- T. tabaciThrips tabacie0pest
- Outcome
- breeding cabbages to be resistant to T. tabacie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased emphasis should be placed on breeding cabbages to be resistant to T. tabaci as the foundation for its management”
The same questions in other papers
application · pest · Brassica oleracea (wild cabbage)Positive and negative results
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- negative
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See all 28 papers →insecticide · pest · Brassica oleracea (wild cabbage)Positive and negative results
21 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
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See all 29 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.