Abstract
Thrips, primarily Frankliniella spp., can damage cotton ( Gossypium hirsutum L.) seedlings. The objectives of this study were to determine the effect of winter cover crops on thrips populations in cotton and to assess the yield and fiber quality response to cover crops and N fertilizer rate with and without thrips protection. A field experiment was conducted on a Bonneau loamy sand soil (loamy, siliceous, thermic, Arenic Paleudult) from 1996 through 1998. Treatments were cover crops, N fertilizer rate, and aldicarb rate. Cover crops were rye ( Secale cereale L.), crimson clover ( Trifolium incarnatum L.), a clover + rye mixture, and winter fallow. Nitrogen levels were 0, 78, and 112 kg N ha −1 . Aldicarb levels were 0 and 1.18 kg a.i. ha −1 . Aldicarb reduced thrips populations. For plots without aldicarb, differences among winter covers occurred at one sampling time in 1998 when fallow had more thrips than the other three winter covers. Aldicarb increased yield by 9% in 1996, 48% in 1997, and 35% in 1998. In 1997 and 1998, yield increases with aldicarb were greater in the winter cover and N treatment combinations that provided higher total N to the crop. The 0 kg N ha −1 rate tended to have lower yield, fiber length, length uniformity, fiber strength, micronaire, and Hunter's +b than the other two N rates. Aldicarb generally increased the value of these fiber properties each year. Including agronomic practices in assessing control measures may improve integrated pest management strategies for thrips in conservation tillage systems.
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Claims 7
Claim · model-written summary
Aldicarb reduced thrips populations.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- Aldicarbe0
- Outcome
- thrips populationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb reduced thrips populations.”
t0“Cotton Yield”
Claim · model-written summary
Without aldicarb, fallow had more thrips than the three winter covers at one sampling in 1998.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- thripse0
- Direction
- moree0
- Comparator
- the other three winter coverse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For plots without aldicarb, differences among winter covers occurred at one sampling time in 1998 when fallow had more thrips than the other three winter covers.”
t0“Cotton Yield”
Claim · model-written summary
Aldicarb increased cotton yield by 9% in 1996, 48% in 1997, and 35% in 1998.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Aldicarbe0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 9% in 1996, 48% in 1997, and 35% in 1998e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb increased yield by 9% in 1996, 48% in 1997, and 35% in 1998.”
t0“Cotton Yield”
Claim · model-written summary
Aldicarb yield increases were greater with winter cover and nitrogen combinations supplying higher total nitrogen in 1997 and 1998.
Verbatim
e0“In 1997 and 1998, yield increases with aldicarb were greater in the winter cover and N treatment combinations that provided higher total N to the crop.”
Claim · model-written summary
Zero nitrogen tended to produce lower cotton yield and fiber length, uniformity, strength, micronaire, and Hunter’s +b than the other rates.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 0 kg N ha −1e0
- Outcome
- yield, fiber length, length uniformity, fiber strength, micronaire, and Hunter's +be0
- Direction
- lowere0
- Comparator
- other two N ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 0 kg N ha −1 rate tended to have lower yield, fiber length, length uniformity, fiber strength, micronaire, and Hunter's +b than the other two N rates.”
t0“Cotton Yield”
Claim · model-written summary
Aldicarb generally increased the listed fiber properties each year.
Not reportedTaxonComparator
Verbatim
e0“Aldicarb generally increased the value of these fiber properties each year.”
Claim · model-written summary
The authors suggest considering agronomic practices when assessing thrips control in conservation tillage.
Not reportedTaxon
Verbatim
e0“Including agronomic practices in assessing control measures may improve integrated pest management strategies for thrips in conservation tillage systems.”
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See all 103 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.