Abstract
The sweetpotato whitefly, Bemisia tabaci MEAM1 Gennadius, is a global pest of tomato, transmitting Tomato yellow leaf curl virus (TYLCV). Management of B. tabaci is challenging in part because of its ability to develop resistance to insecticides. Biopesticides include materials that control B. tabaci via mechanisms that do not select for resistance. Field experiments were conducted in the spring and fall of 2016 and 2017 at the University of Florida's Gulf Coast Research and Education Center in west central Florida to compare biopesticides to conventional insecticides for management of B. tabaci and TYLCV. Insecticide rotations were designed in part around the concept that conventional insecticide programs should group modes of action according to 5-wk treatment intervals, corresponding to an estimated 5-wk generation time for the pest. In 2016, when tomato was treated during the first 5-wk treatment interval with either biopesticides or neonicotinoid insecticides, insecticidal soap contributed to a reduction in whitefly egg numbers and percentage TYLCV that was comparable to results achieved with dinotefuran. In contrast, egg numbers and virus incidence in plants treated with kaolin clay tended to be numerically higher than the untreated control. In spring 2017, comparisons of biopesticides and conventional ovicides/nymphicides during the second 5-wk treatment interval showed that biopesticides can provide comparable reduction in nymph numbers to conventional insecticides. While data from these trials confirm that biopesticides can reduce numbers of whitefly eggs and nymphs, they indicate that season-long programs of the biopesticides evaluated may not reduce transmission of TYLCV below economically acceptable levels.
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Claims 6
Claim · model-written summary
Insecticidal soap reduced whitefly egg numbers comparably to dinotefuran in the first 2016 interval.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- insecticidal soape0
- Interactor
- whiteflye0pest
- Outcome
- whitefly egg numberse0
- Direction
- reductione0
- Comparator
- dinotefurane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2016, when tomato was treated during the first 5-wk treatment interval with either biopesticides or neonicotinoid insecticides, insecticidal soap contributed to a reduction in whitefly egg numbers and percentage TYLCV that was comparable to results achieved with dinotefuran.”
Claim · model-written summary
Insecticidal soap reduced TYLCV percentage comparably to dinotefuran in the first 2016 interval.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- insecticidal soape0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Outcome
- percentage TYLCVe0
- Direction
- reductione0
- Comparator
- dinotefurane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2016, when tomato was treated during the first 5-wk treatment interval with either biopesticides or neonicotinoid insecticides, insecticidal soap contributed to a reduction in whitefly egg numbers and percentage TYLCV that was comparable to results achieved with dinotefuran.”
Claim · model-written summary
Kaolin clay tended to have higher whitefly egg numbers than untreated controls.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- kaolin claye0
- Interactor
- Bemisia tabaci MEAM1
Bemisia tabacit1pest - Outcome
- egg numberse0
- Direction
- numerically highere0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“egg numbers and virus incidence in plants treated with kaolin clay tended to be numerically higher than the untreated control.”
t0“Tomato”
t1“Bemisia tabaci MEAM1”
Claim · model-written summary
Kaolin clay tended to have higher virus incidence than untreated controls.
- Taxon
- TomatoSolanum lycopersicumt1
- Treatment
- kaolin claye0
- Interactor
- Tomato Yellow Leaf Curl VirusTomato yellow leaf curl virust0pathogen
- Outcome
- virus incidencee0
- Direction
- numerically highere0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“egg numbers and virus incidence in plants treated with kaolin clay tended to be numerically higher than the untreated control.”
t0“Tomato Yellow Leaf Curl Virus”
t1“Tomato”
Claim · model-written summary
Biopesticides reduced nymph numbers comparably to conventional insecticides in spring 2017.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- biopesticidese0
- Interactor
- Bemisia tabaci MEAM1Bemisia tabacit1pest
- Outcome
- nymph numberse0
- Direction
- reductione0
- Comparator
- conventional insecticidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In spring 2017, comparisons of biopesticides and conventional ovicides/nymphicides during the second 5-wk treatment interval showed that biopesticides can provide comparable reduction in nymph numbers to conventional insecticides.”
t0“Tomato”
t1“Bemisia tabaci MEAM1”
Claim · model-written summary
Season-long biopesticide programs may fail to lower TYLCV transmission below economically acceptable levels.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- season-long programs of the biopesticidese0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Outcome
- transmission of TYLCVe0
- Direction
- may not reducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“season-long programs of the biopesticides evaluated may not reduce transmission of TYLCV below economically acceptable levels.”
t0“Tomato”
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