Relationship of the sweetpotato whitefly to a new tomato fruit disorder in Florida

  title={Relationship of the sweetpotato whitefly to a new tomato fruit disorder in Florida},
  author={D. Schuster and T. F. Mueller and J. B. Kring and J. F. Price},
A new disorder of fruit has been observed on tomato (Lycopersicon escu- lentum Mill.) in Florida. The disorder, termed irregular ripening, was associated with field populations of the sweetpotato whitefly, Bemisia tabaci (Gennadius) and is char- acterized by incomplete ripening of longitudinal sections of fruit. An increase in internal white tissue also was associated with whitefly populations. In field cage studies, fruit on tomato plants not infested with the sweetpotato whitefly exhibited… Expand
The Effect of Time of Sweetpotato Whitefly Infestation on Plant Nutrition and Development of Tomato Irregular Ripening Disorder
Tomato plants infested with sweetpotato whitefly had mean foliar levels of calcium, copper, iron, phosphorous, potassium, magnesium, manganese, and zinc that were greater than in noninfested control plants at final harvest for both studies, regardless of time of infestation. Expand
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Experiments conducted to elucidate the relationship of nymphal and pupal density with severity of the disorder of the silverleaf whitefly found expression of irregular ripening symptoms were corre- lated positively to the density of whitefly nymphs and pupae. Expand
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Silverleaf whitefly feeding on tomato fruit both attached to and detached from the plant induces a disorder in the fruit known as irregular ripening, which results in a rapid increase in red color and loss of firmness. Expand
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Squash is a better sink for white fly adults than tomato and could be useful as a trap crop by attracting and holding whitefly adults, thus keeping them from moving to tomato. Expand
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Growing squash as a trap crop could be a useful cultural manipulation in managing the silverleaf whitefly and TYLC on tomato, although the management tactic may be more applicable to small-scale farm operations. Expand
The results show that B. tabaci adults were attracted by the odors of the five plants, and the order of preference was poinsettia > flowering Chinese cabbage > sweet potato > cabbage > tomato. Expand
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It is suggested that infestation by the sweet potato whitefly inhibits the accumulation of carotenoids and chlorophylls which are both synthesized through the non-mevalonate pathway. Expand
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Pepper germplasm is characterized to identify whitefly-resistant accessions that will form the basis for future resistance breeding and shows that AS and OR were significantly different among accessions and were positively correlated, which was also the case for the parameters in the free-choice tests. Expand
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The tomato leaf bioassay produced reliable and repeatable results for whitefly toxicity studies and predicted that effective nymph and adult whitefly control can be achieved with sucrose octanoate at application rates ≤1% (4,000 ppm [AI]). Expand