Abstract
Bemisia tabaci MEAM1 (Gennadius), the sweetpotato whitefly, transmits Tomato yellow leaf curl virus (TYLCV), which causes significant yield losses annually in Florida and other tomato-producing regions. Field trials were carried out at the University of Florida's Gulf Coast Research and Education Center to evaluate integration of plastic mulch type, at-plant insecticide, and tomato variety for management of the sweetpotato whitefly and TYLCV. The tomato varieties Charger, Rally, and Tygress had significantly lower season-long densities of whitefly eggs and nymphs than Florida-47 in one or more trials. Aggressive chemical control measures failed to reduce virus incidence in two of the three trials and did not improve yield. In 2013, when virus pressure was extremely high, yield in the susceptible variety was decimated, but virus-tolerant varieties produced a crop. Egg and nymph densities tended to be lowest on TYLCV-tolerant varieties and on tomato grown on metalized mulch. Differences in yield were primarily due to tomato variety and TYLCV incidence. Intensive insecticide use common in Florida tomato production may reduce losses when viral pressure is moderate, but not when migration of viruliferous whiteflies into the field is constant. Without significant winter freezes or a coordinated host-free period to reduce whitefly populations, insecticidal control and repellent-metalized mulches will offer limited protection compared with genetic tolerance to the virus, which may also be overcome under high virus pressure.
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Claims 11
Claim · model-written summary
Tomato varieties Charger, Rally and Tygress had significantly lower season-long densities of whitefly eggs and nymphs than Florida-47 in one or more trials.
- Taxon
- tomato
Solanum lycopersicume1 - Material
- Charger, Rally, and Tygresse1
- Treatment
- tomato varietiese1
- Interactor
- whiteflye1pest
- Outcome
- season-long densities of whitefly eggs and nymphse1
- Direction
- lowere1
- Qualifier
- in one or more trialse1
- Comparator
- Florida-47e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The tomato varieties Charger, Rally, and Tygress had significantly lower season-long densities of whitefly eggs and nymphs than Florida-47 in one or more trials”
Claim · model-written summary
Egg and nymph densities tended to be lowest on TYLCV-tolerant tomato varieties.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- TYLCV-tolerant varietiese1
- Interactor
- TYLCVTomato yellow leaf curl viruse1pathogen
- Outcome
- Egg and nymph densitiese1
- Direction
- loweste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egg and nymph densities tended to be lowest on TYLCV-tolerant varieties and on tomato grown on metalized mulch”
Claim · model-written summary
Egg and nymph densities tended to be lowest on tomato grown on metalized mulch.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- metalized mulche1
- Interactor
- TYLCVTomato yellow leaf curl viruse1pathogen
- Outcome
- Egg and nymph densitiese1
- Direction
- loweste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egg and nymph densities tended to be lowest on TYLCV-tolerant varieties and on tomato grown on metalized mulch”
Claim · model-written summary
Aggressive chemical control measures failed to reduce TYLCV incidence in tomato in two of the three trials.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- Aggressive chemical control measurese1
- Outcome
- virus incidencee1
- Direction
- failed to reducee1
- Qualifier
- in two of the three trialse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Aggressive chemical control measures failed to reduce virus incidence in two of the three trials and did not improve yield”
e2“other tomato-producing regions”
Claim · model-written summary
Aggressive chemical control measures did not improve tomato yield.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- Aggressive chemical control measurese1
- Outcome
- yielde1
- Direction
- did not improvee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Aggressive chemical control measures failed to reduce virus incidence in two of the three trials and did not improve yield”
e2“other tomato-producing regions”
Claim · model-written summary
In 2013, under extremely high virus pressure, yield in the susceptible tomato variety was decimated.
- Taxon
- tomatoSolanum lycopersicume2
- Material
- susceptible varietye1
- Outcome
- yielde1
- Direction
- decimatede1
- Qualifier
- when virus pressure was extremely highe1
- Setting
- In 2013e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In 2013, when virus pressure was extremely high, yield in the susceptible variety was decimated”
e2“other tomato-producing regions”
Claim · model-written summary
Under high virus pressure, virus-tolerant tomato varieties produced a crop.
- Taxon
- tomatoSolanum lycopersicume2
- Material
- virus-tolerant varietiese1
- Outcome
- produced a crope1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“but virus-tolerant varieties produced a crop”
e2“other tomato-producing regions”
Claim · model-written summary
Differences in tomato yield were primarily due to tomato variety and TYLCV incidence.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- tomato varietye1
- Interactor
- TYLCVTomato yellow leaf curl viruse1pathogen
- Outcome
- yielde1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Differences in yield were primarily due to tomato variety and TYLCV incidence”
Claim · model-written summary
Intensive insecticide use may reduce tomato losses when viral pressure is moderate, but not when whitefly migration into the field is constant.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- Intensive insecticide usee1
- Interactor
- whitefliesAleyrodoideae1pest
- Outcome
- lossese1
- Direction
- may reducee1
- Qualifier
- when viral pressure is moderate, but not when migration of viruliferous whiteflies into the field is constante1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Intensive insecticide use common in Florida tomato production may reduce losses when viral pressure is moderate, but not when migration of viruliferous whiteflies into the field is constant”
Claim · model-written summary
Insecticidal control and repellent-metalized mulches will offer limited protection compared with genetic tolerance to the virus, without winter freezes or a host-free period.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- insecticidal control and repellent-metalized mulchese1
- Outcome
- protectione1
- Direction
- limitede1
- Qualifier
- Without significant winter freezes or a coordinated host-free periode1
- Comparator
- genetic tolerance to the viruse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Without significant winter freezes or a coordinated host-free period to reduce whitefly populations, insecticidal control and repellent-metalized mulches will offer limited protection compared with genetic tolerance to the virus”
e2“other tomato-producing regions”
Claim · model-written summary
Genetic tolerance to the virus may be overcome under high virus pressure.
- Taxon
- tomatoSolanum lycopersicume3
- Treatment
- high virus pressuree2
- Outcome
- genetic tolerancee1
- Direction
- overcomee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Without significant winter freezes or a coordinated host-free period to reduce whitefly populations, insecticidal control and repellent-metalized mulches will offer limited protection compared with genetic tolerance to the virus”
e2“which may also be overcome under high virus pressure”
e3“other tomato-producing regions”
The same questions in other papers
mulching · control · Solanum lycopersicum (tomato)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
insecticide · control · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.