Thursday, February 9, 2012

New and Revised Agriculture Publications, January 2012

This email lists new and revised EDIS publications that have been released to the public in January 2012. They are now available on the World Wide Web at This mailing only includes publications in the Agriculture program area. Please see separate mailings for publications in other program areas.






A Wireworm Conoderus rudis (Brown) (EENY507/IN909)

Wireworms are the larvae of click beetles. These larvae are smooth, slender and round in cross-section. Wireworms are important pests of various crops and occur in all seasons at variable densities. Feeding damage is restricted to the seeds, seedlings and underground parts of the plants. Unlike foliage feeders, they are very difficult to detect due to their soil-dwelling habitat. This 4-page fact sheet was written by Dakshina R. Seal, and published by the UF Department of Entomology and Nematology, December 2011.


Cape Honey Bee Apis mellifera capensis Escholtz (EENY513/IN916)
Cape honey bees can produce both male and female offspring parthenogenetically. Unlike other African bee races, they are docile, but unlike all other races of honey bees, they are social parasites. Find out why South African beekeepers consider Cape bees a more serious threat than the varroa mite in this 4-page fact sheet was written by James D. Ellis, and published by the UF Department of Entomology and Nematology, December 2011.


Florida Wax Scale, Ceroplastes floridensis Comstock (EENY510/IN913)
The Florida wax scale, Ceroplastes floridensis Comstock, is one of the most commonly encountered soft scales throughout the the southern United States, where it is a serious pest of citrus and several ornamental and landscape plants, like holly. This 4-page fact sheet was written by Shweta Sharma and Eileen Buss, and published by the UF Department of Entomology and Nematology, December 2011.


Protecting Blueberries from Freezes in Florida (HS968/HS216)
Blueberry growers: know when the conditions are right in commercial blueberry fields, during and after bloom, for freeze damage, as well as practices you can use to minimize it. This 7-page fact sheet was written by J.G. Williamson, P.M. Lyrene, and J.W. Olmstead, and published by the UF Department of Horticultural Sciences, January 2012.


Weed Management in Pear (HS94/WG021)
Weeds compete with pear trees for light, nutrients, and water. Weed interference can be minimized with proper cultural practices and herbicides. General maintenance, such as controlling weeds in adjacent areas, preventing weeds from producing seeds, and cleaning mowing equipment of weed seed, will prevent weeds from becoming a serious problem. This 6-page fact sheet includes recommendations for herbicides labeled for pear in Florida. Written by Peter J. Dittmar and Jeffrey G. Williamson, and published by the UF Department of Horticultural Sciences, December 2011.


Applying Pesticides in Compliance with the National Pollutant Discharge Elimination System (NPDES) (PI239)
On October 31, 2011, EPA issued a final National Pollutant Discharge Elimination System (NPDES) Pesticide Generic Permit for point source discharges from the application of pesticides to waters of the United States. This 10-page fact sheet explains what is now required for pesticide applications in Florida. Written by F.M. Fishel, and published by the UF Department of Agronomy, December 2011.


Calcium Silicate Recommendations for Sugarcane on Florida Organic Soils (SSAGR350/SC092)
Although silicon isn’t an essential plant nutrient, adding calcium silicate to soils low in soluble silicon increases yield an average of 20%. This 5-page fact sheet describes calcium silicate recommendations for sugarcane on organic soils, developed using field studies at several locations. Written by J. Mabry McCray, Ronald W. Rice, and Leslie E. Baucum, and published by the UF Department of Agronomy, August 2011. (UF/IFAS Photo: Josh Wickham)




How to Characterize Soil Variability in Florida Citrus Groves as It Relates to Tree Growth and Yield (SL556/SS557)
Non-uniform tree growth and fruit yield are very common throughout many Florida citrus groves, but variable groves are typically managed as if they were uniform. This 4-page fact sheet provides information about the relationship between soil variability and citrus production, proposes recommendations for soil sampling that account for spatial variability, and suggests site-specific management practices for variable Florida citrus groves. Written by Kirandeep K. Mann, Arnold W. Schumann, Thomas A. Obreza, Willie G. Harris, and Jerry B. Sartain, and published by the UF Department of Soil and Water Science, January 2011.


Economic Impacts of Citrus Greening (HLB) in Florida, 2006/07-2010/11 (FE903)
Since 2006, the bacterial disease citrus greening has cost Florida’s economy an estimated $3.636 billion in lost revenues and 6,611 jobs by reducing orange juice production, according to the study reported in this 5-page fact sheet written by Alan W. Hodges and Thomas H. Spreen and published by the UF Department of Food and Resource Economics, January 2012.
UF/IFAS press release:


A Web-Based Tool for Timing Copper Applications in Florida Citrus (PP289)
The Citrus Copper Application Scheduler provides citrus growers with an easy-to-use tool to guide copper application decisions. It is an updated version of a previous copper residue model. This 4-page fact sheet was written by Megan M. Dewdney, Clyde W. Fraisse, Tiago Zortea, and Jamie Burrow, and published by the UF Department of Plant Pathology, January 2012.


Nursery & Greenhouse


European Pepper Moth or Southern European Marsh Pyralid Duponchelia fovealis (Zeller) (Insecta: Lepidoptera: Crambidae) (EENY508/IN910)
Researchers are monitoring this notable greenhouse pest in northern Europe and Canada for the cut flower, vegetable and aquatic plant industries. Its native range is southern Europe, the eastern Mediterranean region, the Canary Islands, Syria and Algeria, but it has expanded its range to include other parts of Africa and the Middle East, northwest India, Europe, Canada and the United States. Recent survey detected adults in pheremone traps in 20 of the 26 Florida counties surveyed. This 11-page fact sheet was written by Stephanie D. Stocks and Amanda Hodges, and published by the UF Department of Entomology and Nematology, December 2011.


Management of Orchid Pests with Silwet® L-77 and Horticultural Oils (PP287)
IFAS researchers evaluated the ability of the surfactant Silwet® L-77 to improve the efficacy of horticultural oils in controlling boisduval scale and mite infestations in orchids. This 3-page fact sheet reports the results and provides homeowners with directions for its use. Written by R. A. Cating, M. A. Hoy, and A. J. Palmateer, and published by the UF Department of Plant Pathology, November 2011.




El Caballo Pura Raza Española (AN275)
El caballo Pura Raza Española (P.R.E), conocido también como el Andaluz, es de una elegante raza con ascendencias que se extienden miles de años en el pasado a la región de Andalucía de la Península Ibérica (Cuadro 1). Estos animales desarrollaron gran agilidad, fortaleza, y belleza al lidiar con el terreno escabroso y los animales salvajes, incluyendo toros fieros, de la región.
This 4-page fact sheet is the Spanish language version of AN269, The Purebred Spanish Horse. It was written by María L. Mandina and Jorge R. Rey, and published by the UF Department of Animal Science, December 2011.




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