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Whitefly transmitted viruses – Fall 2020

The outlook for problems with whitefly transmitted viruses does not look good for fall 2020 vegetable crops. Several viruses were reported at low levels at the end of the spring crops and have already been detected in early fall crops/experiments. This combined with rapidly increasing whitefly populations (and continued hot,…
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Whitefly Outlook for Fall 2020

I believe everyone knows that whitefly populations have been building dramatically the last few weeks. Whiteflies love hot dry weather and reproduce rapidly under our current conditions. While we are probably not as bad as we were in 2017 (maybe a month behind), we are far ahead of the last…
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NEW INSECTICIDE SHOWING GOOD ACTIVITY ON WHITEFLY ADULTS

A newly registered insecticide, PQZ, from Nichino America has shown good efficacy against the adult stage of silverleaf whitefly in multiple small plot tests in the last few weeks. While overall efficacy has not been fully evaluated, the activity on adults has appeared equal to Sivanto, which has been considered…
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WHITEFLY NUMBERS AHEAD OF 2018

Dr. Apurba Barman has been running a line of yellow sticky traps throughout southern Georgia for almost two years. These small traps are placed along roadways and changed and counted weekly. The trap lines include 125 locations stretching from Dothan, Alabama, to Reidsville, Georgia. The data collected from these traps…
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PEPPER WEEVIL – Fall 2019

While some growers were successful managing pepper weevil this spring, others were not. PEPPER WEEVIL IS NOT A PEST YOU WANT TO GET BEHIND ON. Weevils can enter a field and feed on foliage as soon as it is transplanted (or before in the greenhouse), but they cannot reproduce until…
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WHITEFLY INSECTICIDE OPTIONS

Whitefly have been building for several weeks and are at high levels in some areas. Insecticide options for whitefly have not changed a great deal in the last year. The cornerstone chemistries for whitefly are still the Group 4 (Venom, Assail, Actara, Sivanto and pre-mixes containing these prodcuts) and Group…
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Whitefly Situation Could Change Rapidly

We have had reports of whiteflies in multiple locations for some time. Thankfully they have remained low; however, that could change rapidly. In tests on station in Tifton, the whitefly population has increased significantly in the last week or so. We are seeing silverleaf in young squash. Adult counts today…
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Pesticide Registration Activities

Pesticide registration/review is always interesting, if nothing else. The 9th Circuit Court once again as ruled that all Lorsban registrations should be cancelled. This was more over procedural issues than safety, but safety is consistent area of discussion. DOW is working to maintain those labels and for now we still…
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Torac registered for use in vegetables

I assume most of you know by now that Torac is registered for a variety of insect pests on a variety of crops. Torac is a new mode of action for most insects (it is the same as some acaricides) and is relatively broad spectrum. There are a few specific…
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Whitefly-transmitted viruses in vegetable crops

We are currently detecting a variety of whitefly-vectored viral diseases in vegetable crops. The two of greatest concern are cucurbit leaf crumple virus and tomato yellow leaf curl virus. Both have been detected in multiple counties in southern Georgia but are generally at low levels to date; unfortunately, this could…
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