Citrus: World Markets and Trade
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How to Fight Citrus Greening Disease (And It’S Not Through Genetic Engineering)
William & Mary Environmental Law and Policy Review Volume 40 (2015-2016) Issue 3 Article 7 May 2016 Saving The Orange: How to Fight Citrus Greening Disease (And It’s Not Through Genetic Engineering) Evan Feely Follow this and additional works at: https://scholarship.law.wm.edu/wmelpr Part of the Agriculture Law Commons, and the Environmental Law Commons Repository Citation Evan Feely, Saving The Orange: How to Fight Citrus Greening Disease (And It’s Not Through Genetic Engineering), 40 Wm. & Mary Envtl. L. & Pol'y Rev. 893 (2016), https://scholarship.law.wm.edu/wmelpr/vol40/iss3/7 Copyright c 2016 by the authors. This article is brought to you by the William & Mary Law School Scholarship Repository. https://scholarship.law.wm.edu/wmelpr SAVING THE ORANGE: HOW TO FIGHT CITRUS GREENING DISEASE (AND IT’S NOT THROUGH GENETIC ENGINEERING) EVAN FEELY* INTRODUCTION The orange is dying. With Florida’s citrus industry already suffer- ing from the growing skepticism of an increasingly health-conscious American public as to orange juice’s benefits,1 the emergence of citrus greening disease over the past two decades has left the orange’s long-term future very much in doubt.2 A devastating virus first documented in China roughly one hundred years ago, citrus greening disease (or “HLB”), has only migrated to Florida in the past twenty years, but has quickly made up for lost time.3 Primarily transmitted by an insect known as the Asian citrus psyllid (“ACP”), the disease has devastated Florida growers in recent years, wiping out entire groves and significantly affecting trees’ overall yield.4 This past year, Florida growers experienced their least productive harvest in forty years, and current estimates of next year’s yield are equally dismal.5 * J.D. -
TRISTEZA the Worldwide Threat from Destructive Isolates of Citrus
TRISTEZA The Worldwide Threat from Destructive Isolates of Citrus Tristeza Virus-A Review C. N. Roistacher and P. Moreno ABSTRACT. This paper reviews the effects of extremely destructive forms of citrus tristeza virus (CTV) which poses serious threats to citrus industries worldwide. These include Capao Bonito CTV in Brazil, navel orange stem pitting CTV in Peru, stem pitting 12B CTV found in the university orchards in Southern California, severe grapefruit stem pitting CTV found in South Africa, recent forms of CTV responsible for decline of sweet orange on sour orange rootstock in Florida and Israel and other severe CTV isolatesreported from Spainand elsewhere. Many ofthesedestructive CTVisolates are transmitted by Toxoptera citricidus but most can be transmitted by Aphis gossypii at relatively high levels of efficiency. The impact of recent changes in aphid transmissibility and population dynamics, and the threat of movement of T. citricidus into new regions of the world are reviewed. The appearance and impact of new strains or mutants of CTV differing in pathogenic capacities or in aphid transmissibility are discussed. Methods for the identification of new or destructive isolates of CTV are also reviewed. Concepts for prevention which include quarantine, eradication and education are presented. The immediate need is to test for presence of CTV in those countries where sour orange is the predominant rootstock. Also, to test for and eliminate very destructive forms of CTV, to strengthen quarantine laws and regulations, and to educate scientists, nurseryman and growers to the dangers involved in budwood importation and virus or vector spread. Tristeza, caused by the citrus ravages of tristeza once it begins to tristeza virus (CTV) remains today as spread. -
Squeezed Orange Juice Properties Before and During <I>In Vitro</I>
Fresh-Squeezed Orange Juice Properties Before and During In Vitro Digestion as Influenced by Orange Variety and Processing Method Yamile A. Mennah-Govela and Gail M. Bornhorst Abstract: This study aims to analyze the influence of processing and orange variety on initial quality, antioxidant activity, total polyphenol content (TPC), and ascorbic acid content of fresh-squeezed orange juice during in vitro digestion. Fresh- squeezed orange juice was made from Fukumoto Navel, Lane Late Navel, Olinda Nucellar Valencia, and Campbell Valencia oranges, and was processed thermally and nonthermally. Antioxidant activity (FRAP and ABTS assays), TPC (Folin-Ciocalteu method), and ascorbic acid were analyzed before and after gastrointestinal digestion. Bioaccessibility was calculated by comparing the measured values after digestion with the initial value for each juice. Orange variety significantly influenced pH, acidity, and total soluble solids (P < 0.0001). Antioxidant activity by FRAP was significantly higher (P < 0.0001) in Fukumoto Navel orange juice (16.0 ± 0.4 mM Trolox) than the other juices (range: 9.1 to 10 mM Trolox). TPC was significantly influenced by orange variety (P < 0.0001) and ranged from 521 ± 6 (Campbell Valencia) to 800 ± 11 mg gallic acid/L (Lane Late Navel). Processing method did not influence antioxidant and polyphenol bioaccessibility (P > 0.05). However, antioxidant activity by ABTS and ascorbic acid bioaccessibility were significantly influenced by orange variety (P < 0.0001). These results indicate that fruit variety and nutrient bioaccessibility should be considered to optimize processing and formulation parameters. Keywords: antioxidant activity, ascorbic acid, bioaccessibility, in vitro digestion, orange juice Practical Application: Processing method and variety of fruit during beverage manufacturing may influence its nutrient bioaccessibility. -
New Research Suggests Drinking 100 Percent
NEW RESEARCH SUGGESTS consumption of 100 percent orange juice was not DRINKING 100 PERCENT associated with overweight or obesity in children. ORANGE JUICE IS ASSOCIATED WITH As part of the study, researchers analyzed data from the 2003-2006 National Health and Nutrition IMPROVED NUTRIENT Examination Survey (NHANES) and found that ADEQUACY AND DIET children who regularly consume 100 percent QUALITY AMONG CHILDREN orange juice tended to have significantly higher intakes of vitamin C, potassium, vitamin B6, folate, dietary fiber and magnesium than non- consumers. None of the children who consumed 100 percent orange juice were below the Estimated Average Requirement (EAR) for vitamin C, while nearly 30 percent of non- consumers were below the EAR. Furthermore, diet quality (as measured by the Healthy Eating Index (HEI-2005)) was significantly higher in those children consuming 100 percent orange juice than in non-consumers, as was intake of total fruit, fruit juice and whole fruit. "A growing body of research has painted a clear picture that enhanced nutrient intake and better diet quality are associated with drinking 100 percent orange juice in children," said study co- author Carol E. O'Neil, PhD, MPH, LDN, RD, School of Human Ecology, Louisiana State University Agricultural Center. "Our research adds One Hundred Percent Orange Juice May Play further support to the association between an Important Role in Supporting Intake of drinking 100 percent orange juice and higher Certain Under-consumed Nutrients intakes of five important nutrients--vitamin C, folate, magnesium, dietary fiber and potassium-- Orange juice may do more for children's diet and which are generally under-consumed by the U.S. -
Cinnamon Kumquats
Preserve Today, Relish Tomorrow UCCE Master Food Preservers of El Dorado County 311 Fair Lane, Placerville CA 95667 Helpline (530) 621-5506 • Email: [email protected] • Visit us on Facebook and Twitter! Cinnamon Kumquats “How about a kumquat, my little chickadee?” (W.C. Fields, My Little Chickadee,1940) Say what? Yes, I said kumquats. Those adorable little kumquats. You know, those “things” that you have been so curious about. Another idea for using citrus that is not a marmalade. Vive la différence! That said, a kumquat marmalade is nothing short of marvelous. Honestly. “A kumquat is not an orange though it wants to be one, especially when they’re around other kumquats. (W.C. Fields, It’s A Gift, 1934) Kumquats are native to China, and their name comes from the Cantonese kam kwat, which means "golden orange." They are a symbol of prosperity and a traditional gift at Lunar New Year. Unlike other citrus, kumquats are eaten whole, including the skin. They have a tart-bitter-sweet taste that is boldly refreshing. Ya gotta try one. Really. Just pop one in your mouth and go for it. Fresh kumquats are wonderful in salads and in savory dishes. They are also great in chutneys and relishes. We canned them in a sweet cinnamon syrup. They can then be eaten right out of the jar like candy or used in desserts such as pound cakes or cheesecakes. The syrup is wonderful for drizzles, too. Savory ideas: use them in salads (use the syrup in your dressing!), they would be perfect with ham, maybe as a glaze for chicken wings (I would add some hot sauce, too). -
Tropical Horticulture: Lecture 32 1
Tropical Horticulture: Lecture 32 Lecture 32 Citrus Citrus: Citrus spp., Rutaceae Citrus are subtropical, evergreen plants originating in southeast Asia and the Malay archipelago but the precise origins are obscure. There are about 1600 species in the subfamily Aurantioideae. The tribe Citreae has 13 genera, most of which are graft and cross compatible with the genus Citrus. There are some tropical species (pomelo). All Citrus combined are the most important fruit crop next to grape. 1 Tropical Horticulture: Lecture 32 The common features are a superior ovary on a raised disc, transparent (pellucid) dots on leaves, and the presence of aromatic oils in leaves and fruits. Citrus has increased in importance in the United States with the development of frozen concentrate which is much superior to canned citrus juice. Per-capita consumption in the US is extremely high. Citrus mitis (calamondin), a miniature orange, is widely grown as an ornamental house pot plant. History Citrus is first mentioned in Chinese literature in 2200 BCE. First citrus in Europe seems to have been the citron, a fruit which has religious significance in Jewish festivals. Mentioned in 310 BCE by Theophrastus. Lemons and limes and sour orange may have been mutations of the citron. The Romans grew sour orange and lemons in 50–100 CE; the first mention of sweet orange in Europe was made in 1400. Columbus brought citrus on his second voyage in 1493 and the first plantation started in Haiti. In 1565 the first citrus was brought to the US in Saint Augustine. 2 Tropical Horticulture: Lecture 32 Taxonomy Citrus classification based on morphology of mature fruit (e.g. -
Citrus Canker in California
Ex ante Economics of Exotic Disease Policy: Citrus Canker in California Draft prepared for presentation at the Conference: “Integrating Risk Assessment and Economics for Regulatory Decisions,” USDA, Washington, DC, December 7, 2000 Karen M. Jetter, Daniel A. Sumner and Edwin L. Civerolo Jetter is a post-doctoral fellow at the University of California, Agricultural Issues Center (AIC). Sumner is director of AIC and a professor in the Department of Agricultural and Resource Economics, University of California, Davis. Civerolo is with the USDA, Agricultural Research Service and the Department of Plant Pathology, University of California, Davis. This research was conducted as a part of a larger AIC project that dealt with a number of exotic pests and diseases and a variety of policy issues. Ex ante Economics of Exotic Disease Policy: Citrus Canker in California 1. Introduction This paper investigates the economic effects of an invasion of citrus canker in California. We consider the costs and benefits of eradication under alternatives including the size of the infestation, whether it occurs in commercial groves or in urban areas, and various economic and market conditions. The impacts of various eradication scenarios are compared to the alternative of allowing the disease to become established again under various conditions, including the potential for quarantine. We do not consider here the likelihood of an infestation or the specifics of exclusion policies. Rather we focus on economic considerations of eradication versus establishment. 2. A background on the disease, its prevalence, and spread Citrus canker is a bacterial disease of most commercial Citrus species and cultivars grown around the world, as well as some citrus relatives (Civerolo, 1984; Goto 1992a; Goto, Schubert 1992b; and Miller, 1999). -
Facts About Citrus Fruits and Juices: Grapefruit1 Gail C
Archival copy: for current recommendations see http://edis.ifas.ufl.edu or your local extension office. FSHN02-6 Facts About Citrus Fruits and Juices: Grapefruit1 Gail C. Rampersaud2 Grapefruit is a medium- to large-sized citrus fruit. It is larger than most oranges and the fruit may be flattened at both ends. The skin is mostly yellow but may include shades of green, white, or pink. Skin color is not a sign of ripeness. Grapefruit are fully ripe when picked. Popular varieties of Florida grapefruit include: Did you know… Marsh White - white to amber colored flesh and almost seedless. Grapefruit was first Ruby Red - pink to reddish colored flesh with few seeds. discovered in the West Flame - red flesh and mostly seedless. Indies and introduced to Florida in the 1820s. Most grapefruit in the U.S. is still grown in Florida. Compared to most citrus fruits, grapefruit have an extended growing season and several Florida Grapefruit got its name because it grows in varieties grow from September through June. clusters on the tree, just like grapes! Fresh citrus can be stored in any cool, dry place but will last longer if stored in the refrigerator. Do Imposter!! not store fresh grapefruit in plastic bags or film- wrapped trays since this may cause mold to grow on the fruit. Whether you choose white or pink grapefruit or grapefruit juice, you’ll get great taste and a variety of health benefits! Read on…. 1. This document is FSHN026, one of a series of the Food Science and Human Nutrition Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. -
Florida's Citrus Canker Eradication Program (CCEP): Annual Economic Impact on Florida's Processed Orange Industry1
Archival copy: for current recommendations see http://edis.ifas.ufl.edu or your local extension office. FE533 Florida's Citrus Canker Eradication Program (CCEP): Annual Economic Impact on Florida's Processed Orange Industry1 Thomas H. Spreen, Marisa L. Zansler and Ronald P. Muraro2 Rapid expansion and integration of international establish guidelines for averting the spread of the trade, increased tourism, and changes in methods of disease. Currently there is no biological or chemical production in recent decades have increased the cure for citrus canker. All infected trees and citrus likelihood of the introduction of invasive species to trees within a radius of 1900 feet of an infected tree U.S. (United States) agriculture. Invasive species can must be eradicated (1900-foot rule). On-site have adverse environmental and/or economic impacts decontamination of grove workers, field equipment, when introduced into a region. Economic impacts and packinghouses is also mandatory. include marketing, production, and trade implications. The current effort to eradicate citrus canker from the industry, the CCEP, has been mired in One such invasive species imposing adverse controversy associated with public opinion and legal economic impacts to the Florida citrus industry is a action. A benefit-cost analysis was conducted to bacterial disease known as citrus canker (caused by determine whether the CCEP is, indeed, a useful Xanthomonas axanopodis pv. citri). Citrus canker policy tool in combating the economic ramifications causes lesions on the leaves, stems, and fruit of citrus associated with citrus canker. trees. The disease adversely affects the proportion of fruit intended for the fresh market, serves to weaken A model of the world orange juice market was citrus trees, and leads to a reduction in yields and originally developed at the University of Florida in higher costs of production. -
Canker Resistance: Lesson from Kumquat by Naveen Kumar, Bob Ebel the Development of Asiatic Citrus Throughout Their Evolution, Plants and P.D
Canker resistance: lesson from kumquat By Naveen Kumar, Bob Ebel The development of Asiatic citrus Throughout their evolution, plants and P.D. Roberts canker in kumquat leaves produced have developed many defense mecha- anthomonas citri pv. citri (Xcc) localized yellowing (5 DAI) or necro- nisms against pathogens. One of the is the causal agent of one of sis (9-12 DAI) that was restricted to most characteristic features associated the most serious citrus diseases the actual site of inoculation 7-12 DAI with disease resistance against entry X (Fig. 2). of a pathogen is the production of worldwide, Asiatic citrus canker. In the United States, Florida experienced In contrast, grapefruit epidermis hydrogen peroxide (H2O2). Hydrogen three major outbreaks of Asiatic citrus became raised (5 DAI), spongy (5 peroxide is toxic to both plant and canker in 1910, 1984 and 1995, and it DAI) and ruptured from 7 to 8 DAI. pathogen and thus restricts the spread is a constant threat to the $9 billion On 12 DAI, the epidermis of grape- by directly killing the pathogen and citrus industry. fruit was thickened, corky, and turned the infected plant tissue. Hydrogen Citrus genotypes can be classified brown on the upper side of the leaves. peroxide concentrations in Xcc-in- into four broad classes based on sus- Disease development and popula- fected kumquat and grapefruit leaves ceptibility to canker. First, the highly- tion dynamics studies have shown that were different. Kumquat produces susceptible commercial genotypes are kumquat demonstrated both disease more than three times the amount of Key lime, grapefruit and sweet lime. -
Orange/Clementine Grade March Citrus 2-3
Pick a better snack™ Lesson Plan ORANGE/CLEMENTINE GRADE MARCH CITRUS 2-3 RECOMMENDED An Orange in January by Dianna Hutts Aston BOOK NEEDED SUPPLIES Oranges or clementines, strainer, hand-held citrus press/ juicer (optional) CITRUS FEATURED NEEDED “The Florida Way” Jammin’ Minute TASTING: RESOURCES Orange photo ORANGE/ 21ST CENTURY Students will learn that eating fruit is a way to be healthy and want to CLEMENTINE SKILL include it in a healthy diet. • Practice preventative health behaviors • 2-3: Choose healthy foods. OBJECTIVES • Students will gain knowledge of orange/clementines (plant part, how to recognize, how to eat, how to prepare). • Students will learn that oranges/clementines help them fight off infection and are good for their bodies. • Students will learn that friends and educator eat citrus fruits. • Students will learn to try new fruits and vegetables. WHAT YOU NEED • Citrus grows in a topical or subtropical environment. Citrus is an TO KNOW ABOUT important industry in Florida, California, Arizona and Texas. In the U.S., CITRUS FRUITS Florida produces the most oranges and grapefruit. California produces the most lemons and tangerines. ALTERNATIVES: • The complete citrus fruits list is a long one and includes oranges, GRAPEFRUIT lemons, limes, mandarins, clementines, tangerines, grapefruits, kumquats, minneola tangelos, pomelos, oroblancos, and uglis. • Unlike many fruits, citrus does not ripen after it has been picked from the tree. • The United States ranks 3rd in citrus production worldwide. • Orange trees are the most common fruit tree in the world. • Navels and Valencia are the most popular oranges in California. They have a thicker skin and less juice than the ones grown in Florida due to drier conditions and cooler nights. -
The Asian Citrus Psyllid and the Citrus Disease Huanglongbing
TheThe AsianAsian CitrusCitrus PsyllidPsyllid andand thethe CitrusCitrus DiseaseDisease HuanglongbingHuanglongbing Psyllid Huanglongbing The psyllid (pronounced síl - lid) is a small insect, about the size of an aphid The pest insect It has an egg stage, 5 wingless intermediate stages called nymphs, and winged adults Adult The pest insect Egg 5 Nymphs (insects molt to grow bigger) Adult psyllids usually feed on the underside of leaves and can feed on either young or mature leaves. This allows adults to survive year -round. The pest insect When feeding, the adult leans forward on its elbows and tips its rear end up in a very characteristic 45 o angle. The eggs are yellow -orange, tucked into the tips of tiny new leaves, and they are difficult to see because they are so small The pest insect The nymphs produce waxy tubules that direct the honeydew away from their bodies. These waxy tubules are unique and easy to recognize. Nymphs can only survive by living on young, tender The leaves and stems. pest insect Thus, nymphs are found only when the plant is producing new leaves. As Asian citrus psyllid feeds, it injects a salivary toxin that causes the tips of new leaves to easily break off. If the leaf survives, then it twists as it grows. Twisted leaves can be a sign that the psyllid has been there. The pest insect What plants can the psyllid attack? All types of citrus and closely related plants in the Rutaceae family • Citrus (limes, lemons, oranges, grapefruit, mandarins…) • Fortunella (kumquats) • Citropsis (cherry orange) • Murraya paniculata (orange jasmine) • Bergera koenigii (Indian curry leaf) • Severinia buxifolia (Chinese box orange) Plants • Triphasia trifolia (limeberry) • Clausena indica (wampei) affected • Microcitrus papuana (desert-lime) • Others….