Citrus Canker Quarantine Established in Alabama

Jim Rogers Diseases, Regulation

Federal and Alabama agriculture authorities recently established a citrus canker quarantine for all of Baldwin County, Alabama, to prevent the spread of the disease. The quarantine was established on July 25 by the U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) and the Alabama Department of Agriculture and Industries (ADAI). On June 22, 2021, APHIS confirmed …

Citrus Canker Confirmed in South Carolina

Jim Rogers Diseases

The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the presence of citrus canker disease in a nursery in South Carolina. The nursery sells plants to consumers through online sales. Other nurseries did not receive these plants. Together with state partners, APHIS is working to collect and destroy the plants shipped to consumers in …

Sweet Orange Scab and Citrus Canker Movement Conditions Revised

Tacy Callies Diseases, Regulation

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) has revised the conditions for interstate movement of citrus fruit from areas quarantined for both sweet orange scab (Elsinöe australis, SOS) and citrus canker (Xanthomonas axonopodis, CC). The revisions allow for the movement of fruit to packinghouses located in contiguous states that are not quarantined for either disease. …

Be Alert for Citrus Canker in Alabama

Jim Rogers Citrus, Diseases

Alabama Cooperative Extension implores growers to be on the lookout for symptoms of citrus canker disease in their trees. Commercial growers need to scout their trees regularly to stop the disease’s potential spread, says Kassie Conner, Alabama Extension specialist. “What we need people to do right now is look for these symptoms and report it if they find it,” Conner …

The Quest for Copper Alternatives for Managing Citrus Canker

Jim Rogers Diseases, Research

By Ozgur Batuman, Sanju Kunwar and Ana Redondo There are new products that potentially can be added to a grower’s toolbox in coming seasons for managing citrus bacterial canker. Citrus canker is an infection by a species of bacteria (Xanthomonas citri subsp. citri) that causes fruit blemishes and fruit drop. It makes fruit unsightly and lowers its marketability. Every year, …

Citrus Canker Quarantine Areas Added in Texas

Tacy Callies Diseases

Effective immediately, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) is establishing three new quarantine areas and expanding two existing quarantine areas for citrus canker in Cameron County, Texas, to prevent the spread of the disease. This action is necessary because APHIS confirmed the positive identification of citrus canker in citrus trees from residential areas in …

Alabama Trying to Contain Citrus Canker

Tacy Callies Diseases

How citrus canker arrived in Alabama is still unknown. What is certain is that it’s an issue the Alabama Department of Agriculture is determined to contain before it becomes a major problem, said Kassie Conner, director of the Auburn University Plant Diagnostic Lab, during a recent webinar. “The first trees that were found infected were in a landscape, and the …

Making Sense of Biologicals: A Key Tool Against Citrus Canker

Tacy Callies MSOB

Disease management ranks high on the list of every Florida citrus grower’s agenda. Tools are available for producers to combat citrus diseases like greasy spot, melanose, scab, foot rot and citrus canker. But growers can never have enough tools, especially when disease resistance is a real possibility in the future. STOCKING THE TOOLBOX“To grow citrus trees and produce quality fruit …

First Citrus Canker Detection in Alabama

Ernie Neff Diseases

Citrus canker has been detected in a residential area of Baldwin County, Alabama, which is bordered by Florida and the Gulf of Mexico. Federal and state plant health officials confirmed the identification of the disease from foliage and fruit samples collected by the Alabama Department of Agriculture and Industries’ (ADAI) routine citrus survey.  This was the first detection of citrus …

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Australia Declared Free of Citrus Canker

Ernie Neff Diseases, International

On April 12, Australia was officially declared free from citrus canker after the remaining restricted areas in the Northern Territory (NT) were lifted. The disease was not detected in commercial orchards in Australia and was restricted to non-commercial residences in Western Australia (WA) and NT. Minister for Agriculture, Drought and Emergency Management David Littleproud acknowledged NT and WA for their …

Prepare for Citrus Canker Season

Tacy Callies Diseases, Tip of the Week

By Evan Johnson Now that bloom has arrived, it is time to start thinking about canker management. As the fruitlets develop, they will become susceptible around the end of March to the beginning of April. The spring fruit lesions are particularly concerning because they cause fruit drop. Without proper management, early season canker can cause 90 to 100% crop loss …

Citrus Canker Management Through the Year

Ernie Neff Diseases

Plant pathologist Megan Dewdney with the University of Florida Institute of Food and Agricultural Sciences offers suggestions for managing citrus canker at different times of the year. She is an associate professor at the Citrus Research and Education Center (CREC) in Lake Alfred. Dewdney suggests that copper sprays begin when fruit reach three-eighths of an inch in diameter in groves …

How Will Irma Affect Citrus Canker Management?

Tacy Callies Diseases

By Evan G. Johnson The citrus canker season is quickly approaching again, so it is time to start planning your canker management program to avoid fruit drop and fresh-market quality loss. It is easy to forget the importance of controlling citrus canker with the current state of HLB in Florida. However, citrus canker can cause almost complete crop loss if …

Citrus Canker Management for 2017

Kelsey Fry Diseases

By Evan Johnson The citrus canker season is quickly approaching again, so it is time to start preparing your canker management plan. It is easy to forget the importance of controlling citrus canker with the current state of HLB in Florida. However, citrus canker can cause almost complete crop loss if environmental conditions are favorable for disease early in the …

canker, HLB, bactericides

Indian River Citrus Grower on Canker, HLB and Bactericides

Ernie Neff Bactericides, Citrus Greening, Grapefruit

Canker and HLB have made things very difficult for Indian River citrus growers, but outgoing Indian River Citrus League President Scott Lambeth is optimistic about bactericides. “For the last three years with the contraction of the industry, it’s very difficult to keep an open mind and stay positive when you see family farms that are third and fourth generation still …

Greening and Canker Concerns for Georgia Growers

Jim Rogers Diseases, Georgia

The recent Citrus Growers’ Summer Update in Valdosta, Georgia, provided growers another outlet to learn about two diseases — citrus greening and citrus canker — that could have serious ramifications on the industry’s future in Georgia. Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist, highlighted the seriousness of the discovery of both of the diseases in …

Citrus Nutrient Deficiencies? There’s an App for That

Jim Rogers Diseases, Nutrition, Pests, Technology

While sending citrus tissue samples to the lab for analysis remains important, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has developed a smartphone application (app) that can supplement lab analysis to identify leaf symptoms of key nutrient deficiencies and certain pests and diseases. Arnold Schumann, a professor of soil and water science with UF/IFAS, demonstrated how …