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NOTE: The acknowledgement of sponsorship in no way constitutes or reflects an official endorsement of these businesses or their products or services by either the University of Florida, IFAS, or the Florida Cooperative Extension Service. Sponsors have no control over the publication content.
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Thrips parvispinus was first detected in the United States in 2020 on ornamentals in central Florida. This species was recently collected on peppers in eastern Palm Beach County.
Scouts have reported that T. parvispinus is causing substantial damage in multiple young and mature pepper plantings in the region. Other fields have had low levels of crop damage. Reports indicate insecticide rotations are helping to reduce populations.
Reports from southwest Florida indicate that samples submitted for species identification have not yet been positive for T. parvispinus.
The injury on pepper leaves is similar to the injury caused by broad mites. According to the FDACS-DPI Pest Alert, in regions where the species has been long established, the crops most affected are papaya, peppers, potatoes, eggplants, beans, shallots, and strawberries. In Indonesia, pepper yield losses associated with T. parvispinus could reach 23 percent. ( FDACS PEST ALERT - Thrips parvispinus).
An updated Pest Alert from FDACS-DPI is coming soon, as well as an identification guide. If you suspect T. parvispinus in your crop, please contact Anna Meszaros: ameszaros@ufl.edu or Craig Frey: craigfrey@ufl.edu for sampling and confirmation.

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Listronotus sparsus is an emerging weevil pest of Apiaceae crops (celery, parsley, dill, and carrot).
On-farm trials are ongoing to study different management options for weevil control in celery and parsley. See data from a fall 2022 research trial ( Research Connections - Commercial Vegetable Production Website). Grower partners indicate that some insecticides have been effective to lower the pest population in conventional celery and parsley production. However, managing this pest in organic production remains challenging. Blacklight traps seem to be an effective method to monitor weevil populations, but this method still needs to be studied further.
Populations continue to be high in southwest Florida.
In the EAA, populations were reported to be low to moderate depending on the location.
If you suspect L. sparsus in your celery, parsley, dill, cilantro, and carrot field, please contact Anna Meszaros: ameszaros@ufl.edu or Craig Frey: craigfrey@ufl.edu for sampling and confirmation.
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Colletotrichum sp. causes anthracnose diseases on many plants, and a specific disease called black dot on potatoes. Black dot is not a common disease in Florida, but Colletotrichum diseases are, thanks to our mild temperatures, humidity, rain, and long cropping seasons.
The UF/IFAS Plant Diagnostic Center has detected a strobilurin-insensitive strain of Colletotrichum from leaf spots on potato plants. The location is not being reported at this time. If you suspect strobilurin-insensitive strain on your farm, you may send samples to the UF/IFAS Plant Diagnostic Center, a local UF/IFAS diagnostic lab, or contact your local extension agent for sample and submission assistance.
As a reminder, if a strain is insensitive to a class of fungicide, you should consider avoiding that class (FRAC 11 in the case of azoxystrobin) in your fungicide rotation, since it will not be effective.
We are currently working to differentiate the species of Colletotrichum that was identified as strobilurin-insensitive. This may give insight into the host range, survival, and/or management of the disease in potato and other Florida crops.

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 In southwest Florida, reports indicate high levels of whitefly in many tomato, eggplant, watermelon, and squash plantings. Adults continue to find new plantings of tomato and melons very quickly.
On the East Coast, whitefly populations continue to be moderate to high in many crops.
Reports from Homestead indicate that whitefly populations are high in a variety of crops. Whitefly is the primary pest in tomato, with TYLCV reaching 30-50% in susceptible varieties. In snap beans, reports indicate whiteflies are causing pale pods around field edges and BGMV is high in fields of continuous whitefly pressure. Whiteflies were also reported to be high in eggplant and squash.
Click here for virus reports.
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 In southwest Florida, respondents indicated thrips populations remain low across all crops, with melon thrips ( Thrips palmi) and Florida flower thrips ( F. bispinosa) both reported.
Around Miami-Dade County, Asian bean thrips ( Megalurothrips usitatus) remain the dominant species on beans and continue to be at moderate levels. Thrips were reported at moderate to high levels in tomato and are common on eggplant, pepper, and squash in the area as well, although species information was not provided.
Click here for virus reports.
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Caterpillars have decreased across the area.
In southwest Florida, populations are generally moderate to low. Southern armyworm are reported to be low to moderate in beans while lesser cornstalk borers are reported to be low. In corn, fall armyworm is reported to be low to moderate and corn earworm is reported to be low. Loopers, southern armyworms, beet armyworms, and melon worms have also been reported at low levels in various crops.
In the EAA, Diamondback moth is maintaining a steady low pressure in broccoli. In corn, lesser cornstalk borers are reported at moderate levels in a few isolated fields while armyworms are low to moderate.
In Homestead, fall armyworm was reported to be sporadic in corn and beet armyworm continues to be reported in pepper.
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Overall, leafminer pressure has increased across much of the region since the cold temperatures a few weeks ago.
In southwest Florida, leafminers were reported to have increased to moderate to high levels in tomato and cucurbits. Leafminers are also reported on eggplant and squash in the region. On snap beans, reports indicate pressure is mostly low.
At EREC, leafminer populations are low but increasing.
In Homestead, leafminers are reported at medium/high levels in squash and snap bean. In some areas, they are predominately in the younger snap bean plantings.
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In southwest Florida, pepper weevils are mostly at low levels, but seem to be increasing.
Weevils are also reported to be present on peppers in Homestead.
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Dr. German Sandoya, UF/IFAS lettuce breeder at EREC, reports cucumber beetles in lettuce at greater populations than usual for this time of year, with populations currently at moderate levels.
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In the EAA, silk fly in corn is low to moderate depending on the location. The slightly above-average populations may be related to the unusually warm temperatures for this season.
There have been low populations of silk fly adults and maggots reported in corn in Homestead.
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 Aphids are reported at low levels in beans and tomato in southwest Florida and they are at low levels in cabbage in the EAA.
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In southwest Florida, broadmite populations have oscillated lately, and are currently low to moderate and on a downward trend.
Broadmites are also reported on pepper and eggplant in Homestead. Mites are present on watermelon crops in the region.
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Tomato Yellow Leaf Curl Virus is reported to be at medium to high levels in Homestead, with one report specifying a 30-50% rate of infection in susceptible varieties. Tospovirus is low in resistant varieties of tomatoes, but high otherwise.
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In Homestead, bean golden mosaic virus has increased in fields with continuous whitefly pressure.
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Bacterial spot is reported to be low in pepper in southwest Florida. In tomato, it is increasing and reported to be at medium to high incidence depending on the affected variety.
In Homestead, the disease has increased to very high levels.
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Bacterial blight (Xanthomonas campestris pv. phaseoli) is at medium incidence levels in snap bean in Homestead.
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 There are multiple reports of target spot ( Corynespora cassiicola) increasing in tomatoes in southwest Florida and the disease has reached moderate to high levels in many fields.
Target spot is also at a high incidence rate in Homestead.
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Sclerotinia (Sclerotinia sclerotiorum) is at medium levels and increasing in southwest Florida.
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Early blight (Alternaria solani) is high on tomato in Homestead.
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 Gummy stem blight ( Didymella bryoniae) is reported to be high in southwest Florida with heavy disease on older melon plantings, and young plantings showing symptoms rapidly.
Gummy stem blight is also present in Homestead.
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In southwest Florida, Anthracnose (Colletotrichum sp.) remains low on peppers and corn.
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 In southwest Florida, powdery mildew ( Podosphaera xanthii) is reported at low to medium levels in squash.
In Homestead, the incidence is high in squash. Powdery mildew ( Erysiphe polygoni) is also reported in snap bean.
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Northern Corn Leaf Blight
 In southwest Florida, incidence of Northern corn leaf blight ( Exserohilum turcicum) is reported to be low.
In the EAA, NCLB is generally decreasing. It was detected at moderate levels in a particular field but has not yet spread to adjacent fields.
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Southern Corn Leaf Blight
 Southern corn leaf blight ( Bipolaris maydis) is at moderate levels in southwest Florida.
In Homestead, SCLB incidence is moderate and increasing.
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 Downy mildew ( Pseudoperonospora cubensis) is reported to be at medium to high levels in squash in SWFL and Homestead.
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Downy Mildew of Crucifers
 In southwest Florida, downy mildew ( Peronospora parasitica) is reported to be low in broccoli and cabbage.
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In Homestead, basil downy mildew (Peronospora belbahrii) is reported at high incidence across the region.
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 Phytophthora blight ( Phytophthora capscici) is reported at moderate levels in cucurbits in the Homestead area.
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Joel Allingham/AgriCare, Inc., Matt Bardin/Glades Crop Care, Carol Brooks, Jason Dyess/Agriquest, Inc., Craig Frey/Hendry County Extension, Kevin Hampton/Agriquest, Inc., Rachel Giles/Advanced Ag Inc., Dr. Carrie Harmon/UF Plant Disease Clinic, Loren Horsman/Forecheck Crop Consulting, Leon Lucas/Glades Crop Care, Anna Meszaros/Palm Beach County Extension, Chuck Obern/C&B Farms, Dr. Jawwad Qureshi/SWFREC, Dr. Gary Vallad/GCREC, and Dr. Shouan Zhang/TREC.
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The South Florida Pest and Disease Hotline is compiled by Craig Frey and Anna Mészáros and is issued on a biweekly basis as a service to the vegetable industry.
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Craig Frey
Hendry County Extension Director
Multi-County Commercial Vegetable Extension Agent
Hendry County Extension Service
1085 Pratt Blvd.
LaBelle, FL 33935
Cell: (863) 517-5880
Email: craigfrey@ufl.edu
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Anna Mészáros
Palm Beach County Extension Agent
Commercial Horticulture
(Vegetable Crop Production)
Palm Beach Co. Extension Service
559 N Military Trail
West Palm Beach, FL 33415-1311
Office: (561) 233-1718
Email: ameszaros@ufl.edu
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