New and revised publications from the University of Florida Insitute of Food and Agricultural Sciences
Cornsilk Fly (suggested common name), Euxesta stigmatias Loew (Insecta: Diptera: Otitidae) (EENY224/IN381)
‘Cornsilk flies’ are attractive, medium to dark metallic green to black colored flies with distinctive wing patterns and wing flapping behavior. They are commonly found throughout Florida’s agricultural communities. Their normally saprophytic life style belies their destructive nature when it comes to their preference for sweet corn ears. Four species of ‘cornsilk flies’ are known to attack corn in Florida: Chaetopsis massyla (Walker), Euxesta annonae (Fabricius), Euxesta eluta Loew, and Euxesta stigmatias Loew. This 8-page fact sheet was written by Gregg S. Nuessly and John L. Capinera, and published by the UF Department of Entomology and Nematology, April 2013. #UFBugs
May 6th, 2013
Florida’s cabbage production is exclusively for the fresh market. The higher-quality cabbage obtained during the late fall, winter, and early spring months in Florida allows the shipment of fresh cabbage to areas of the United States that cannot produce cabbage during that part of the year. This 18-page fact sheet summarizes production practices and pest management for cabbage production in Florida. Written by Wael M. Elwakil and Mark Mossler, and published by the UF Department of Agronomy, April 2013.
Este documento contiene informacion sobre producción en suelos: Desinfección, mejoramiento, cultivos de cobertura, acolchados (mulches); y tipos de contenedores. This 6-page fact sheet was written by Bielinski M. Santos and Henner A. Obregon-Olivas, and published by the UF Department of Horticultural Sciences, March 2013.
May 3rd, 2013
As with any insecticide, repeated use of diamide insecticides on successive generations of the same pest may lead to the development of insecticide resistance. In order to avoid the development of resistance to diamides by targeted pests of tomato, group 28 insecticides, including diamides, must be rotated with insecticides possessing different modes of action. This 3-page fact sheet was written by Hugh A. Smith, and published by the UF Department of Entomology and Nematology, February 2013.
Subsurface Drip Irrigation (SDI) for Enhanced Water Distribution: SDI – Seepage Hybrid System (HS1217)
April 29th, 2013
In terms of water use efficiency, the traditional seepage irrigation systems commonly used in areas with high water tables are one of the most inefficient methods of irrigation, though some irrigation management practices can contribute to better soil moisture uniformity. Subsurface drip irrigation systems apply water below the soil surface by microirrigation, improving the water distribution and time required to raise the water table for seepage irrigation. This 6-page fact sheet was written by Lincoln Zotarelli, Libby Rens, Charles Barrett, Daniel J. Cantliffe, Michael D. Dukes, Mark Clark, and Steven Lands, and published by the UF Department of Horticultural Sciences, March 2013.
With the new fumigant regulations and rising cost of crop production, including fumigants, it would be desirable to reduce the standard use rate of soil fumigants. The use of higher-barrier, gas-impermeable mulches may make it possible to reduce fumigant application rates by helping to contain the fumigant longer within the soil and reduce overall emissions into the atmosphere. The results of field studies show that fumigant application rates can be reduced by 20 to as much as 40% through the use of virtually impermeable or the more gas-tight TIF mulch films at the time of application. This 5-page fact sheet was written by J. W. Noling, and published by the UF Department of Entomology and Nematology, March 2013.
April 8th, 2013
Allelopathy refers to the beneficial or harmful effects of one plant on another plant, both crop and weed species, from the release of biochemicals, known as allelochemicals, from plant parts by leaching, root exudation, volatilization, residue decomposition, and other processes in both natural and agricultural systems. This 5-page fact sheet introduces the concept of allelopathy and mentions potential applications as an alternative weed management strategy. Written by James J. Ferguson, Bala Rathinasabapathi, and Carlene A. Chase, and published by the UF Department of Horticultural Sciences, March 2013.
This 3-page fact sheet lists of multispectrum fumigant nematicides currently registered for use on different Florida crops (Table 1); their maximum rates and specific details for field application (Table 2); and a generalized summary of maximum use rate and relative effectiveness of various soil fumigants for nematode, soilborne disease, and weed control in Florida (Table 3). Written by J. W. Noling, and published by the UF Department of Entomology and Nematology, January 2013.
April 8th, 2013
Nematode species and population levels, incidence of soil-borne diseases and insects, soil moisture at field preparation time, and the intended market for the potatoes can all affect the choice of nematode control measures. Growers should use a combination of as many different kinds of control measures as feasible, since none provides perfect protection for the crop. This 7-page fact sheet was written by J.W. Noling, and published by the UF Department of Entomology and Nematology, December 2012.
Thousand cankers disease of walnut is a tree disease of the edible nut-producing and ornamental tree, black walnut. The first diseased trees were observed in New Mexico in the 1990s. The disease has since spread to most of the western states. Until 2009, diseased black walnut trees were only found outside of the natural range of black walnut, which occurs from the mid-Atlantic states to just west of the Mississippi River. In 2009, it was found near Knoxville, Tennessee; it has since spread to Pennsylvania and Virginia. It is possible that within the next decade this disease could naturally spread to Florida. However, if people continue to move TCD infested walnut logs from place to place, this disease could arrive in Florida tomorrow. This 3-page fact sheet was written by Don Spence and Jason A. Smith, and published by the UF Department of School of Forest Resources and Conservation, February 2013.
Costos Estimados en el 2010 para Establecer y Producir Pitaya (Fruta Dragón) en el Sur de Florida (FE921)
Como consecuencia de la creciente competencia extranjera y la disminución de rendimientos de los productos agrícolas tradicionales, muchos productores en el Sur de la Florida se han embarcado en una búsqueda agresiva de productos agrícolas que sean alternativas viables. Un producto que ha llamado la atención es la pitaya, una especie de cactus trepador autóctona de las regiones de bosques tropicales de México, Centroamérica y América del Sur. De menos de 50 hectáreas plantadas en la Florida en fecha tan reciente como 2006, la producción se ha multiplicado por seis y ahora se estima en alrededor de 320 acres. This 6-page fact sheet was written by Edward A. Evans, Jordan Huntley, Jonathan Crane, and Allen F. Wysocki, and published by the UF Department of Food and Resource Economics, March 2013.
Opciones de gestion agronomica para la variabilidad y para el cambio climatico: El riego localizado (HS1212)
Esta publicación se enfoca en el uso del riego localizado para mejorar los sistemas de producción. This 5-page fact sheet was written by Lincoln Zotarelli, Clyde Fraisse, and Daniel Dourte, and published by the UF Department of Horticultural Sciences, January 2013.
El centro marrón y el corazón hueco son trastornos fisiológicos internos no-infecciosos del tubérculo de la papa. Un centro marrón (también llamado corazón incipiente y hueco, corazón marrón o centro de azúcar) se caracteriza por una región muerta en las células de la médula de los tubérculos lo que resulta en un tejido de color marrón. This 3-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, January 2013.
Las malezas causan problemas en la producción de patata en Florida y puede reducir rendimientos a través de competencia directa por la luz, la humedad y los nutrientes, o por albergar insectos y enfermedades que atacan las patatas. This 4-page fact sheet was written by Peter Dittmar, Seth Byrd, Lincoln Zotarelli, Diane Rowland, and William Stall, and published by the UF Department of Horticultural Sciences, January 2013.
Las grietas de crecimiento son un trastorno fisiológigo externo no infeccioso del tubérculo de la papa en el que el tubérculo se agrieta durante el crecimiento. La bendidura se cura, pero deja una fisura en el tubérculo. This 3-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, January 2013.
March 12th, 2013
This 12-page fact sheet lists many of the common insecticides currently labeled for use on vegetables in Florida. A number of new materials have been registered in the past few years or have had additional crops added to their labels. Some older organophosphate insecticides are now restricted to just a few crops, a result of recent rulings related to the Food Quality Protection Act. Changes continue, thus this listing may not be totally accurate at the time of printing. Written by S. E. Webb and P. A. Stansly, and published by the UF Department of Entomology and Nematology, August 2012.
Estimacion de costos de establecimiento y produccion de papaya en el sur de la Florida en 2012 (FE920)
El alza reciente en los precios de la papaya, consecuencia de las restricciones fitosanitarias impuestas a la fruta proveniente de México, ha despertado el interés de productores en el Sur de la Florida, quienes han percibido la oportunidad de suplir la demanda por papaya madura en los Estados Unidos. No obstante, hay mucha incertidumbre con respecto a la viabilidad económica del negocio. El objetivo de este documento es proveer información acerca del retorno económico y los costos de producción de un cultivo de 5 acres de papaya en el Sur de la Florida. Igualmente, se evaluaron precios y rendimientos que permitirían que el negocio fuese rentable en el Sur de Florida. This 7-page fact sheet was written by Edward A. Evans, Fredy H. Ballen, y Jonathan H. Crane, and published by the UF Department of Food and Resource Economics, February 2013.
Regulatory and Market Risk Factors and the Emissions Reduction Potential for Energy Intensive Firms (FE919)
In the last decade, one of the major global environmental concerns has been greenhouse gas emissions. As part of the political debate over climate change, various policy initiatives are being proposed. Energy intensive firms that emit large amounts of greenhouse gases (e.g., floriculture or nursery firms with heated greenhouses) will be operating in an environment of high regulatory and market uncertainties in the coming years. This 3-page fact sheet presents a brief introduction of the regulatory and market risks faced by energy intensive firms and a case study of emissions reduction potential in the horticulture industry. Written by Zhengfei Guan, and published by the UF Department of Food and Resource Economics, March 2013.
- Sanidad en las Instalaciones de Empaque (FSHN1205S/FS219)
- Salud e Higiene de los Trabajadores (FSHN1010S/FS220)
- Sanidad en el Campo (FSHN1012S/FS221)
La Seguridad en la Produccion de Alimentos en la Granja: Buenas Practicas Agricolas y Buenas Practicas de Manejo series
Las Buenas Prácticas Agrícolas (BPA) y las Buenas Prácticas de Manejo (BPM) abarcan los procedimientos generales que los productores, empacadores y procesadores de frutas y verduras frescas deben seguir para garantizar la seguridad de sus productos. Las BPA son usadas antes de la cosecha (es decir, en el campo), mientras que las BPM se utilizan luego de la cosecha, incluyendo el empaque y envío. Esta serie se centra en aspectos específicos del programa de BPA y cómo se relacionan con los cultivos y las prácticas de la Florida.
This series of fact sheets was written by Federico G. Caro, Alexandra Chang, Renée Goodrich-Schneider, y Keith R. Schneider, and published by the UF Department of Food Science and Human Nutrition, February 2013.
A Postharvest Fruit Rot Caused by Alternaria sp. on Imported Plum Tomatoes in South Florida (PP303)
February 27th, 2013
Florida’s deep-water ports are ideal for importing many fruits and vegetables, including tomatoes, by ship from the Caribbean as well as Central and South American production areas. These imports are often strictly regulated for pests, but some pathogens still escape quarantine. This 3-page fact sheet describes a postharvest problem on plum tomatoes that were imported from Mexico through South Florida in 2010. Alternaria sp. was isolated from lesions on diseased fruits, pathogenicity tests were conducted on healthy fruits, and symptoms identical to the originally submitted samples were developed. Written by Zelalem Mersha, Shouan Zhang,and Jerry A. Bartz, and published by the UF Department of Plant Pathology, January 2013.
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