This email lists new and revised EDIS publications that have been released to the public in June and July 2013. They are now available at http://edis.ifas.ufl.edu. This mailing only includes publications in the Agriculture program area. Please see separate mailings for publications in other program areas.
| Agriculture | |
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| A Synopsis of US Consumer Perception of Genetically Modified (Biotech) Crops Over the last few decades, the use of modern tools of molecular biology has made it possible to discover, isolate, and introduce several important agricultural traits in cultivated crops. Such improvements are usually accomplished by the technique known as genetic engineering, also known as genetic modification. The aim of this article is to provide an update on recent developments with respect to GM food crops, as well as an assessment of US public opinion with regards to GM foods in general. A successful case of how a US-grown GM crop gained acceptance in one of the strictest fruit importing countries is presented. This 8-page fact sheet was written by Edward A. Evans and Fredy H. Ballen, and published by the UF Department of Food and Resource Economics, June 2013. |
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| Economic Contributions of Agriculture, Natural Resources, and Related Food Industries in Florida in 2011 Agriculture, natural resources, and related food industries remain a significant force in the economy of Florida, and it is important to recognize their economic contributions for informed public policy. We evaluated the economic contributions of these industries for calendar year 2011 to update previous reports and provide further information on economic trends in the wake of the historic global recession of 2007–2009. This 40-page report was written by Alan W. Hodges, Mohammad Rahmani, and Thomas J. Stevens, and published by the UF Department of Food and Resource Economics, June 2013. |
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| The Food Safety Modernization Act and the FDA Facility Registration Program The Food Safety Modernization Act that President Obama signed into law January 4, 2011 represents the most sweeping update to food safety regulation since the Federal Food, Drug, and Cosmetic Act of 1938. As part of FSMA, registration is required of facilities that manufacture, process, pack or hold food for human or animal consumption. This 3-page fact sheet was written by Susanna Richardson, Renée Goodrich Schneider, Mark A. Ritenour, Michelle D. Danyluk, and Keith R. Schneider, and published by the UF Department of Food Science and Human Nutrition, July 2013. |
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| US-Panama Free Trade Agreement: What Is in It for Florida Agriculture? On October 12, 2011, four years after it was agreed upon by both parties, the United States government signed into law the reciprocal US–Panama Free Trade Agreement (FTA)/Trade Promotion Agreement (TPA). The FTA provides US companies with better access to the Panamanian market and ensures that most US exports of consumer and industrial products to Panama will be accorded immediate duty-free privileges. The main elements of the US–Panama FTA as it relates to agricultural trade revolve around market access, agricultural export subsidies, safeguards, the sugar compensation mechanism, and sanitary and phytosanitary measures. This 11-page fact sheet was written by Edward A. Evans and Fredy H. Ballen, and published by the UF Department of Food and Resource Economics, May 2013. |
| Crops | |
| Citrus | |
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| Directory of Certified Deciduous Fruit and Nut Crops in Florida This 8-page fact sheet written by experts at North Florida REC Peter C. Andersen, Robert C. Hochmuth, Sean R. McCoy, and Lei Lani L. Davis, assists farmers in locating recommended cultivars of fruit and nut crops from Florida nurseries. The nurseries listed in Table 1 offer fruit and nut trees and are listed as certified nurseries with the Florida Department of Agriculture and Consumer Services. Table 2 lists fruit and nut cultivars that UF/IFAS Extension specialists currently recommend or suggest on a trial basis. Published by the UF Department of Horticultural Sciences, April 2013. |
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| Disease Control for Florida Tomatoes (PPP35/VH056) Successful disease management has always been vital in Florida tomato production, given the generally ideal environmental conditions for most plant diseases. An integrated disease management program is a successful approach. This 7-page fact sheet was written by Mathews Paret, Ken Pernezny, and Pam Roberts, and published by the UF Department of Plant Pathology, August 2013. |
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| Florida Peach and Nectarine Varieties The University of Florida has developed high-quality, low-chilling, early-maturing peach and nectarine cultivars that can be grown from the panhandle of Florida to as far south as Immokalee. Low-chilling cultivars can grow and produce fruit under Florida conditions that are much warmer in winter than in northern states. Furthermore, ripening of these cultivars during April and May ensures an early spring market window for tree-ripe fresh fruit in Florida before peaches and nectarines from other southeastern states and California come to market. Both commercial and dooryard recommended varieties span the growing season. This 8-page fact sheet was written by Mercy Olmstead, Jose Chaparro, Pete Andersen, Jeff Williamson, and James Ferguson, and published by the UF Department of Horticultural Sciences, May 2013. |
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| 'Florida Radiance' Strawberry 'Florida Radiance' is a strawberry cultivar released from UF/IFAS in 2008. As of 2012, it has become a major cultivar in Florida and other winter and early spring production regions worldwide. In all markets outside the United States and Canada, it is marketed as 'Florida Fortuna'. In addition to commercial production, it has been tested for many years in field plots at the UF/IFAS Gulf Coast Research and Education Center in Wimauma and the Florida Strawberry Growers Association headquarters in Dover for disease, fruit, and plant traits. This 4-page fact sheet was written by Vance M. Whitaker, Craig K. Chandler, Bielinski M. Santos, and Natalia A. Peres, and published by the UF Department of Horticultural Sciences, June 2013. |
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| Granulate cutworm, Feltia subterranea (Fabricius) (Insecta: Lepidoptera: Noctuidae) The granulate cutworm, Feltia subterranea (Fabricius) is the most commonly occurring cutworm in Florida, though it is rarely numerous enough to be a major pest. It is nocturnal through most of its life, and lacks distinctive features in the larval and adult stage, so it often is overlooked, and its activities and damage are not fully appreciated. This 4-page fact sheet was written by John L. Capinera, and published by the UF Department of Entomology and Nematology, May 2013. |
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| Magnesium (Mg) for Citrus Trees Magnesium deficiency has been a major problem in citrus production. In Florida, Mg deficiency is commonly referred to as "bronzing." Trees with inadequate Mg may have no symptoms in the spring growth flush, but leaf symptoms develop as the leaves age and the fruit expand and mature in the summer and fall. Magnesium deficiency symptoms occur on mature leaves following the removal of Mg to satisfy fruit requirements. This 4-page fact sheet was written by Mongi Zekri and Tom Obreza, and published by the UF Department of Soil and Water Science, July 2013. |
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| Nitrogen (N) for Citrus Trees Nitrogen is the key component in mineral fertilizers applied to citrus groves. N has more influence on tree growth, appearance, and fruit production/quality than any other mineral element. Nitrogen affects the absorption and distribution of practically all other elements, and it is particularly important to the tree during flowering and fruit set. This 3-page fact sheet was written by Mongi Zekri and Tom Obreza, and published by the UF Department of Soil and Water Science, July 2013. |
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| Phosphorus (P) for Citrus Trees Phosphorus deficiency is not common in Florida citrus groves. If it does occur, it is more difficult to diagnose than nitrogen (N) deficiency or other nutrient element deficiencies. Growth is reduced when P supply is too low. Phosphorus is highly mobile in plants, so when it is deficient, it may move from old leaves to young leaves and other actively growing areas where energy is needed to form seeds and fruit. This 4-page fact sheet was written by Mongi Zekri and Tom Obreza, and published by the UF Department of Soil and Water Science, July 2013. |
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| Seedcorn maggot, Delia platura (Meigen) (Insecta: Diptera: Anthomyiidae) The seedcorn maggot is a polyphagous pest, affecting more than 40 different host plants. It is an important pest of germinating soybeans and corn, and also attacks a wide range of horticultural crops including beans, peas, cucumber, melon, onion, pepper, potato, and other vegetables. Seedcorn maggots damage newly planted seeds by feeding on seed contents, often leaving empty seed shells and preventing germination. Although usually no more than 2% of the seedlings get infested by this insect, 30% to 60% plant loss may occur in the field. This 5-page fact sheet was written by Harsimran Kaur Gill, Gaurav Goyal, and Jennifer L. Gillett-Kaufman, and published by the UF Department of Entomology and Nematology, July 2013. |
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| Spotted Wing Drosophila: Pest Management Recommendations for Southeastern Blueberries The spotted wing drosophila is a recently discovered invasive species native to parts of East Asia. It was first detected in the continental United States in California in 2008 and in Hillsborough County, Florida in 2009. Since then, the spotted wing drosophila has spread to over 28 counties in Florida. SWD is polyphagous, meaning it feeds on many different host plants, including most thin-skinned fruits. The major hosts of concern to the Florida agriculture industry are blueberries, strawberries, blackberries and grapes. This 5-page fact sheet was written by Oscar E. Liburd and Lindsy E. Iglesias, and published by the UF Department of Entomology and Nematology, June 2013. |
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| Tomato Chlorotic Spot Virus Tomato chlorotic spot virus (TCSV) is a tospovirus, similar to but distinct from other tospoviruses currently present in Florida. Like these viruses, TCSV is transmitted by thrips and is able to replicate in both the vector and the plant. TCSV was first reported in Florida in 2012 in tomato plants in Miami-Dade and Lee Counties, but it may have been in the state for several years. Prior to 2012, TCSV was only known to occur in Brazil and Argentina. It is not known how this virus was introduced into Florida. This 5-page fact sheet was written by Jane E. Polston, Erin Wood, Aaron J. Palmateer, and Shouan Zhang, and published by the UF Department of Plant Pathology, May 2013. |
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| Trastornos fisiologicos de la papa: Necrosis por calor interno La necrosis por calor interno (NCI) es un trastorno fisiológico que causa un pardeamiento inaceptable del tejido del tub rculo y puede causar pérdidas económicas para el productor. Las tres principales causas de la NCI en los tubérculos es la alta temperatura en el suelo, la humedad inadecuada del suelo y la nutrición sub-óptima de la planta, o la combinación de estos factores. This 4-page fact sheet, the Spanish language version of HS1145, Potato Physiological Disorders: Internal Heat Necrosis was written by L. Zotarelli, J. E. Reyes-Cabrera, C. M. Worthington, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, May 2013. |
| Nursery and Greenhouse | |
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| Florida Foliage House Plant Care: Spathiphyllum Most Spathiphyllum are seen in flower when at market. The attractive white blooms, called spathes, are long lasting. With proper plant care, Spathiphyllum may produce blooms year after year. Spathiphyllum is a very attractive house plant even when not in bloom and adapts well to home and patio environments. This 2-page fact sheet was written by R. J. Henny and J. Chen, and published by the UF Department of Environmental Horticulture, June 2013. |
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| Palm Morphology and Anatomy Palms differ greatly from broadleaf (dicot) and coniferous (Gymnosperm) trees in their overall form and external structure (morphology) and in their internal structure (anatomy). Morphology and anatomy determine how palms grow, function, and respond to external and internal stress factors. This publication provides a basic understanding of how palms are constructed. This 4-page fact sheet was written by T. K. Broschat, and published by the UF Department of Environmental Horticulture, May2013. |
| Livestock | |
| | Equine Lameness and Imaging Service series The veterinarians of the University of Florida Equine Lameness & Imaging Service specialize in the treatment and rehabilitation of poor performance in sport horses. This series of one-page full color fact sheets describes various diagnostic and imaging services available for diagnosing and treating lameness issues in horses. Computed Tomography (CT) for the Horse |
| Pesticide Information | |
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| Calibration of Chemical Applicators Used in Vegetables (HS1220) Calibration is the process used to determine the amount of chemical material applied per unit area. Equipment for applying liquid and dry materials must be accurately calibrated for pesticides to work efficiently and to avoid crop injury or death. The pesticide label is a legal document and must be followed. Properly calibrating equipment ensures the product is being applied as specified on the label and that environmental contamination will be minimized. This 6-page fact sheet discusses some methods for calibration of sprayers and dry material spreaders and includes information about calibration to help growers properly apply pesticides. written by M. R. Miller and P. J. Dittmar, and published by the UF Department of Horticultural Sciences, May 2013. |
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| Factors Affecting Herbicide Use in Fruits and Vegetables (HS1219) Proper herbicide application is critical for fruit and vegetable growers to effectively manage weeds. Improper herbicide application may lead to herbicide loss from the targeted area, increased crop injury, and reduced weed control. Growers need to take into account a number of factors before and during application in any crop to ensure the herbicide is effective. Herbicide efficacy is greatly affected by timing and environmental conditions. Although complete weed control is not always possible, even slight reductions in weed populations can greatly enhance productivity in fruit and vegetable crops. This 4-page fact sheet reviews techniques and processes to help growers properly apply herbicides. Understanding the processes and applying the following techniques will help to increase the overall efficacy of herbicides in fruit and vegetable production. Written by C. E. Rouse and P. J. Dittmar, and published by the UF Department of Horticultural Sciences, May 2013. |
| Forest Resources | |
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| Herbicides for Weed Control in Eucalyptus Culture Eucalyptus is a diverse genus with over 700 species, most of which are native to Australia. Numerous Eucalyptus species and hybrid clones have been introduced in temperate climates throughout the world and grown as ornamental trees as well as for fuel and fiber. There is renewed interest in planting this fast-growing tree in the southeastern United States for mulch, pulpwood, and bio-energy. However, several silvicultural challenges exist, and competing vegetation control is a significant one. This 7-page fact sheet was written by Anna Osiecka and Patrick Minogue, and published by the UF Department of School of Forest Resources and Conservation, February 2013. |
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