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Sunday, July 7, 2013

Tomato Yellow Leaf Curl Virus (TYLCV)

Tomato Yellow Leaf Curl Virus (TYLCV) is transmitted by silverleaf whitefly.

This data sheet from the University of Florida/IFAS Extension has details on TYLCV:
http://ipm.ifas.ufl.edu/resources/success_stories/T%26PGuide/pdfs/Chapter5/TYLCV.pdf


The best source I found for recommended controls came from the following link and is pasted below: http://www.clemson.edu/extension/hgic/pests/plant_pests/veg_fruit/hgic2217.html

"Prevention & Treatment: Removal of plants with initial symptoms may slow the spread of the disease. Rogued (pulled out) infected plants should be immediately bagged to prevent the spread of the whiteflies feeding on those plants. Keep weeds controlled within and around the garden site, as these may be alternate hosts for whiteflies. Reflective mulches (aluminum or silver-colored) can be used in the rows to reduce whitefly feeding. Low concentration sprays of a horticultural oil or canola oil & a few drops of dish soap will act as a whitefly repellent, reduce feeding and possibly transmission of the virus. Use a 0.25 to 0.5% oil spray (2 to 4 teaspoons horticultural or canola oil per gallon of water) weekly. Examples of products containing horticultural oil are Ferti-lome Horticultural Oil Spray and Bonide All Seasons Spray Oil. An example of a product containing canola oil is Lilly Miller Vegol Year-round Pesticide Oil Concentrate."

There is a HYBRID resistant tomato variety for sale to home gardeners. This Katana tomato variety claims to be "Resistant to fusarium races 1, 2 & 3, verticillium, nematodes, tomato mosaic virus and TYLCV." They sell 12 seeds for $3.49 plus $5.80 shipping here: http://www.kitazawaseed.com/seed_403-126.html