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Below you'll see everything we could locate for your search of “disease”
Citrus, olives and bananas are under threat in many areas due to diseases that affect plants’ circulatory systems and that cannot be treated by applying pesticides. Huanglongbing (HLB) is the disease inflicting heavy damage on citrus in Florida and many other parts of the world. These diseases are difficult to detect early and to treat, given the lack of precision …
Italian citrus grower Giovanni Battista Spanò will combat the citrus nematode, Tylenchulus semipenetrans, with natural methods involving sowing and green manure of the radish cultivar Defender. The nematodes cause slow decline of citrus. “Nematodes and fungal diseases of the soil are a problem that can be easily solved without using harmful chemical products,” says Spanò. “We can just exploit the …
Researchers with several organizations are in the early stages of investigating the use of neuropeptides found in Asian citrus psyllids as the source for biocontrols for HLB disease. The researchers are with the Boyce Thompson Institute (BTI) at Cornell University, the U.S. Department of Agriculture Agricultural Research Service (USDA-ARS) and the University of Washington. The research team is led by …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have discovered another possible solution to the plague of citrus greening that is impacting Florida’s citrus groves. This new information adds to the growing portfolio of knowledge that UF/IFAS scientists are amassing to fight the disease. Led by UF/IFAS microbiology and cell science professor Claudio Gonzalez, a team of plant …
By Phillip Rucks The following is a summary of planting tips for container trees garnered from work done by various University of Florida Institute of Food and Agricultural Sciences researchers as well as my own experience: Keep trees in shade until planted. They should be wet down at least once daily. Be sure trees are not set out in the …
On April 28, U.S. Sen. Marco Rubio and U.S. Sen. Rick Scott sent a letter to U.S. Secretary of Agriculture Sonny Perdue asking him to reverse a decision to let five varieties of citrus fruits be imported from China. The senators’ letter follows an April 24 letter from 17 U.S. representatives from Florida, who made the same request to Perdue. …
By Ariel Singerman The use of mesh bags has been proposed as a strategy for excluding Asian citrus psyllids to protect young citrus trees. The expected benefit of using mesh bags is increased yield by delaying HLB infection. A scientific experiment to evaluate the effectiveness of mesh bags started in February 2018. There are still many unknowns regarding yield, use …
In a bipartisan effort, 17 U.S. representatives from Florida sent a letter to U.S. Secretary of Agriculture Sonny Perdue asking him to reconsider the U.S. Department of Agriculture’s (USDA) decision to allow importation of five types of Chinese fresh citrus to the United States. Florida Agriculture Commissioner Nikki Fried, along with leaders of citrus and other agricultural groups, have already …
Although the Asian citrus psyllid (ACP) is found in Arizona at very low levels, the devastating huanglongbing (HLB) disease, also known as citrus greening, is not. John Caravetta, associate director of the Arizona Department of Agriculture (AZDA), discussed successful efforts to control the psyllid and prevent HLB from infecting orchards. Caravetta reported that “AZDA is conducting trapping for ACP in …
By Clint Thompson April is Invasive Plant Pest and Disease Awareness Month, and the United States Department of Agriculture (USDA) wants help in identifying invasive species that threaten the food supply and cause plant diseases. Samantha Simon, USDA’s executive director of emergency and domestic programs, says invasive species can threaten agriculture and many farming operations, especially in the Southeast. She …
One of the most damaging pathogens for citrus crops continues to be Phytophthora, a soilborne pathogen that attacks the root systems and affects the entire citrus tree. As the pathogen degrades the tree’s root system, above ground symptoms such as slowed growth, chlorotic foliage and reduced fruit size intensify. Eventually, this may result in the death of the tree. Phytophthora can appear …
A new finding of huanglongbing (HLB) has been reported in a residential citrus tree in the city of San Bernardino, California. This is the first confirmed find of the citrus disease in the city and follows the recent detections of several HLB-positive trees located in Colton, Montclair and Ontario. The California Department of Food and Agriculture (CDFA) is working with …
Drought conditions this spring have brought renewed attention to the importance of irrigation for Florida citrus growers. The May issue of Citrus Industry magazine includes two articles on irrigation that will help growers make the most of their water resources. In the first article, growers will learn tips on how to keep their irrigation systems properly maintained. University of Florida …
Like several organizations in Florida, the Georgia Citrus Association (GCA) has asked the U.S. Department of Agriculture (USDA) to reverse its decision to allow fresh citrus from China into the United States. GCA President Lindy Savelle asked for the reversal and expressed “strong opposition” to the April 15 USDA decision in an April 17 letter to U.S. Secretary of Agriculture …
Whether in the field or from home, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus staffers are working for growers throughout the COVID-19 pandemic. Michael Rogers, director of the UF/IFAS Citrus Research and Education Center at Lake Alfred, tells how. “We still are doing business right now,” Rogers says. “IFAS continues to provide support in any way …
Leaders of citrus and other agricultural groups in Florida joined Agriculture Commissioner Nikki Fried in strongly opposing the U.S. Department of Agriculture’s (USDA) recent decision to allow fresh Chinese citrus imports into the United States. An April 21 letter that Fried wrote to U.S. Secretary of Agriculture Sonny Perdue stated in part, “The dire situation on the ground due to …
By Ramdas Kanissery and Mongi Zekri Newly planted citrus trees and resets require more care and attention than established trees, especially when it comes to weed control. Florida’s weather conditions like high summer temperatures and often heavy rainfall make weed control in young groves difficult. Weeds compete with young citrus trees for nutrients, moisture and other resources, and may hinder …
Representatives of the California and Florida fresh citrus industries had distinctly different reactions to the announcement that some fresh citrus from China can now be imported into the United States. California Citrus Mutual President Casey Creamer said, “We don’t anticipate any major disruptions in our fresh markets. It is not anticipated that much volume will come to the U.S.” But …
Laural Dunn, assistant professor in the University of Georgia Department of Food Science & Technology, offers some tips on how farms and packinghouses can best handle COVID-19. Dunn says producers should educate workers on COVID-19 symptoms, how it spreads and how to reduce the spread of the disease. She recommends sharing these University of Georgia Cooperative Extension guidelines with …
Loundes County University of Georgia (UGA) Cooperative Extension Coordinator Jake Price recently provided huanglongbing (HLB) disease information and advice to the state’s citrus growers. “Greening (another name for HLB) is the big gorilla in the room,” said Price, who has helped producers with the growth of citrus in Lowndes County and surrounding areas. Georgia’s citrus industry launched in 2013 and …
