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EDIS Update

New and revised publications from the University of Florida Insitute of Food and Agricultural Sciences

    Citrus peelminer Marmara gulosa Guillèn and Davis (Insecta: Lepidoptera: Gracillariidae) (EENY415/IN985)

    May 10th, 2013
    Topic(s):Citrus, Ecosystems & Species

    Figure 1. Adult citrus peelminer, Marmara gulosa Guillèn and Davis.The citrus peelminer is a dark-gray moth with mottled white and brown markings and about 4 mm in length. This moth is considered native in the United States, attacking willow. It is believed that a host-shift occurred to multiple non-native plants including all varieties of citrus and cerain ornamentals, such as oleander. Citrus peelminer has been reported to occur in low numbers in Florida and at least three Marmara species have been identified in the state. Recent evaluations of an experimental pheromone lure that is still under development by researchers at the University of California, Riverside have confirmed captures of citrus peelminer (Marmara sp.) in Polk County, Florida. This 3-page fact sheet was written by Lukasz L. Stelinski, and published by the UF Department of Entomology and Nematology, April 2013.
    http://edis.ifas.ufl.edu/in985

    Informacion para los propietarios: Cancro Citrico (PP298)

    February 8th, 2013
    Topic(s):Citrus, Spanish Language

    Figure 5. Lesiones marrones elevadas de cancro en fruta con unos particulares márgenes prominentes empapados de agua.El cancro cítrico es una enfermedad introducida en Florida y es muy perjudicial económicamente para la industria comercial. La enfermedad no está presente en todas las regiones tropicales y subtropicales productoras de cítricos donde el cancro cítrico puede ser problemático, por lo tanto, las restricciones para exportar fruta con cancro cítrico son muy estrictas. Esta enfermedad también concierne a los propietarios, no solo por sus efectos en la industria económica, sino también porque es altamente contagiosa y la mayoría de la fruta contagiada en un árbol muy afectado se cae de éste prematuramente. This 4-page fact sheet was written by M. M. Dewdney, P. D. Roberts, J. H. Graham, K. R. Chung, and M. Zekri, and published by the UF Department of Plant Pathology, January 2013.
    http://edis.ifas.ufl.edu/pp298

    Burrowing Nematode Radopholus similis (Cobb, 1893) Thorne, 1949 (Nematoda: Secernentea: Tylenchida: Pratylenchidae: Pratylenchinae) (EENY542/IN969)

    November 30th, 2012
    Topic(s):Citrus

    Figure 7. Radopholus similis male head (A) and tail (B).The burrowing nematode is the most economically important nematode parasite of banana in the world. Infection causes toppling disease of banana, yellows disease of pepper and spreading decline of citrus. These diseases are the result of burrowing nematode infection destroying root tissue, leaving plants with little to no support or ability to take up water and translocate nutrients. Because of the damage that it causes to citrus, ornamentals and other agricultural industries, worldwide, burrowing nematode is one of the most regulated nematode plant pests. This 5-page fact sheet was written by Nicholas Sekora and William T. Crow, and published by the UF Department of Entomology and Nematology, November 2012.
    http://edis.ifas.ufl.edu/in969

    Fortunella spp., Kumquat (FOR300/FR368)

    October 8th, 2012
    Topic(s):Citrus, Lawn & Garden

    Figure 1. Kumquat (Fortunella spp.)Many people find kumquat trees attractive and useful yard specimens. Their dark green leaves and contrasting bright orange fruits give them ornamental quality, and their relatively small size makes them easy to care for once they’re established. Because kumquats generally require less care than other citrus trees, they may be a good choice for gardeners with less time or experience, but who still desire an attractive and tasty citrus tree. If space is an issue, kumquats also do well in containers as long as they receive proper sunlight and watering. This 2-page fact sheet was written by Michael G. Andreu, Melissa H. Friedman, and Robert J. Northrop, and published by the UF Department of School of Forest Resources and Conservation, July 2012.
    http://edis.ifas.ufl.edu/fr368

    Identificacion de los sintomas del cancro citrico y procedimientos de descontaminacion (PP214SP/PP138)

    August 24th, 2012
    Topic(s):Citrus, Spanish Language

    Figure 1. Lesiones necróticas del cancro en los tallos, hojas y frutos de toronja.El cancro cítrico es una seria enfermedad de los cítricos. La mayoría de los cultivos de cítricos son susceptibles, la toronja, la lima mejicana y algunas naranjas tempranas son las más susceptibles. Una infección severa puede causar defoliación, una muerte regresiva de la rama, una decadencia general del árbol, una caída prematura de la fruta, y manchas en la misma. Los árboles severamente infectados se vuelven débiles, improductivos y no rentables. This 5-page fact sheet was written by Mongi Zekri, Megan Dewdney, Jamie Burrow, and Pamela Roberts, and published by the UF Department of Plant Pathology, August 2012.
    http://edis.ifas.ufl.edu/pp138

    Japanese Orange Fly, Bactrocera tsuneonis (Miyake) (Insecta: Diptera: Tephritidae) (EENY263/IN542)

    April 2nd, 2012
    Topic(s):Citrus

    Figure 1. Adult female Japanese orange fly, Bactrocera tsuneonis (Miyake).This fruit fly is one of the most important pests of citrus in Japan. There have been no interceptions of the Japanese orange fly in the United States, probably due in a large part to the protection provided by a U.S. embargo of long standing against citrus from the orient. There have been some efforts recently to effect the removal of this embargo in order that citrus from Japan might be exported to the U.S. If this were to be done, the danger of introducing the Japanese orange fly into the U.S. would be greatly increased. This 2-page fact sheet was written by H. V. Weems, Jr. and T. R. Fasulo, and published by the UF Department of Entomology and Nematology, March 2012.
    http://edis.ifas.ufl.edu/in542

    Outbreaks of Foodborne Disease Associated with Fruit and Vegetable Juices, 1922 to 2010 (FSHN1204/FS188)

    March 9th, 2012
    Topic(s):Citrus, Food Safety, Safety

    Salmonella species on X.L.D. agarThe FDA has recently mandated that all 100% fruit/vegetable juices sold wholesale be produced under a Hazard Analysis and Critical Control Point (HACCP) plan. As part of their HACCP plan, juice processors must identify and meet a target for reduction of the most resistant microorganism of public health significance that is likely to occur in the juice. This 7-page fact sheet aids juice processors in the identification of these “pertinent microorganisms,” and reviews the locations of juice preparations and severity of juice-associated outbreaks. Written by M. D. Danyluk, R. M. Goodrich-Schneider, K. R. Schneider, L. J. Harris, and R. W. Worobo, and published by the UF Department of Food Science and Human Nutrition, January 2012.
    http://edis.ifas.ufl.edu/fs188

    Mexican Fruit Fly, Anastrepha ludens (Loew) (Insecta: Diptera: Tephritidae) (EENY201/IN358)

    March 2nd, 2012
    Topic(s):Citrus, Ecosystems & Species

    Figure 12. Mexican fruit flies, Anastrepha ludens (Loew), laying eggs in grapefruit during a laboratory test. The Mexican fruit fly is a very serious pest of various fruits, particularly citrus and mango, in Mexico and Central America. Its natural distribution includes the Rio Grande Valley of Texas, where populations routinely attain pest status if control measures are not practiced. It is a frequent invader in southern California and Arizona. Mexican fruit fly represents a particular threat to Florida because of its special affinity for grapefruit, of which Florida is one of the world’s leading producers. Mexican fruit fly larvae are transported widely in infested fruits. This 6-page fact sheet was written by H. V. Weems, Jr, J. B. Heppner, G. J. Steck, T. R. Fasulo and J. L. Nation, and published by the UF Department of Entomology and Nematology, January 2012.
    http://edis.ifas.ufl.edu/in358

    Citrus Diseases Exotic to Florida: Citrus Yellow Mosaic (PP293)

    March 1st, 2012
    Topic(s):Citrus

    Figure 1. Mosaic symptoms induced by Citrus yellow mosaic virus on the leaves of 'Sathgudi' sweet orange. Citrus yellow mosaic is an important viral disease in India, where it causes significant yield reduction. In some groves, infection rate may be as high as 70%. CYMV induces a bright yellow mottling or vein flecking that persists in mature leaves. Yields are sharply reduced in chronically infected ‘Sathgudi’ sweet orange trees in India, and fruit may also show mosaic symptoms. This 2-page fact sheet was written by K.-R. Chung and R. H. Brlansky, and published by the UF Department of Plant Pathology, February 2012.
    http://edis.ifas.ufl.edu/pp293

    Citrus Diseases Exotic to Florida: Mal Secco (PP290)

    February 29th, 2012
    Topic(s):Citrus

    Figure 3. Orange-reddish discoloration of an orange limb affected by mal secco disease.Mal secco, Italian for “dry disease”, is a fungal disease that causes serious damage to a number of citrus cultivars in the Mediterranean and Black Sea areas, but has not been reported in other citrus-growing regions. The main diagnostic field symptom is that wood of affected limbs has a reddish-yellow stain. This 3-page fact sheet was written by K.-R. Chung, and published by the UF Department of Plant Pathology, February 2012.
    http://edis.ifas.ufl.edu/pp290

    Citrus Diseases Exotic to Florida: Satsuma Dwarf (PP291)

    February 24th, 2012
    Topic(s):Citrus

    Figure 1. Boat-shaped leaves appearing on Satsuma mandarin infected with Satsuma dwarf virus.Satsuma dwarf is a virus disease that was first reported in the early 1930s in Japan. The disease causes serious problems in citrus because it reduces tree vigor and fruit yield. Satsuma dwarf has also been reported in mandarin-growing areas in China, Korea, and Turkey, where it was likely introduced through importation of infected budwood from Japan. This 2-page fact sheet was written by K.-R. Chung and R.H. Brlansky, and published by the UF Department of Plant Pathology, February 2012.
    http://edis.ifas.ufl.edu/pp291

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