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News for citrus growers around the globe
According to the Center for Advanced Studies on Applied Economics (CEPEA), a new heat wave in Brazil’s São Paulo state has been concerning citrus growers. Temperatures are higher than those registered in the last wave in September and are lasting longer. Many producers say that the weather may affect 2024–25 production, but it is still too early to estimate possible …
A newly established quarantine area has been declared following the detection of HLB in five trees in the Valley Center area of California’s San Diego County. The trees were located on a residential property with non-commercial citrus acreage. This is the first time the disease has been confirmed in Valley Center, marking the third area in San Diego County to …
The fresh-market orange crop in the United States rose 2% in 2022–23 compared to the prior year, to 1.44 million tons, the U.S. Department of Agriculture’s Economic Research Service reported this fall. The increase was due to larger navel orange and early/midseason crops in California and Texas. FRESH FRUIT PRICES FALL With increased supply, grower prices for fresh oranges were …
One of the key components of managing HLB is keeping its vector, the Asian citrus psyllid (ACP), in check. Management recommendations for the pest have evolved over time. The history of that evolution is a subject of discussion in the November episode of the All In For Citrus podcast. Lukasz Stelinksi, an entomologist with the University of Florida Institute of …
Diversification is key to production remaining sustainable in the cold-hardy citrus region. It is message that industry leaders preach to producers who are looking to grow the citrus industry in North Florida, Georgia and Alabama. John Chater, assistant professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, talked about the importance …
By Davie Kadyampakeni, Lorenzo Rossi and Alan Wright Huanglongbing (HLB) disease lowers tree performance by reducing water and nutrient uptake as a result of root loss. HLB-affected trees have a fibrous root loss of about 30% to 80%, which increases as disease symptoms develop in the canopy. Investigating optimal nutrient concentrations in citrus roots thus improves the understanding of HLB …
Like most speakers in a recent World Citrus Organisation (WCO) climate change discussion, those addressing South America and South Africa focused on potential impacts rather than already observed impacts. SOUTH AMERICA “Whether we are negationist or pro-climate change, we should agree that something wrong is occurring in our sector,” stated a slide from Oscar Salgado, an agricultural engineer and fruit …
By Brandon Page The effects of HLB on the Florida citrus industry are widely known and well understood by those who depend on the citrus industry for their livelihood. It has been over a decade since the real impact of HLB was recognized. The first indication of HLB I recall seeing was a significant loss of foliage and unprecedented fruit …
Greg Douhan with University of California Agriculture and Natural Resources (UCANR) recently wrote about phytophthora diseases in California citrus. Edited excerpts follow: There are at least four species of Phytophthora species (P. citrophthora, P. parasitica, P. syringae and P. hibernalis) associated with citrus in California. The three diseases in citrus caused by these fungal-like pathogens are phytophthora root rot, phytophthora …
The Oriental fruit fly (OFFor Bactrocera dorsalis) quarantine in San Bernardino and Riverside counties in California was expanded in October and November by federal and state agriculture authorities. The actions were taken on Oct. 12, Nov. 3, Nov. 9 and Nov. 17 by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the California Department of …
Australian scientists are developing a vaccine-like solution to arm citrus growers with an effective way to combat citrus tristeza virus (CTV), a significant challenge for the Australian citrus industry. The $1.5 million initiative is being delivered through Hort Innovation and collaboratively led by the University of Queensland, the New South Wales Department of Primary Industries (NSW DPI) and Auscitrus. Researchers …
Federal and state authorities in early November expanded the Mediterranean fruit fly (Ceratitis capitata or Medfly) quarantine in the Leimert Park area of Los Angeles County, California. The action was taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) on Nov. 1 and again on Nov. …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Christopher Vincent was awarded an Early-Career Research Fellowship in the Environmental Protection and Stewardship track from the Gulf Research Program (GRP) of the National Academies of Sciences, Engineering and Medicine. Vincent is an associate professor of citrus tree ecophysiology in the Horticultural Sciences Department at the Citrus Research and …
Both University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) speakers at a Nov. 28 winter weather workshop warned about the risk of evaporative cooling when using irrigation to protect citrus from freezing temperatures. Microsprinkler irrigation has been the main form of cold protection for Florida citrus for at least the last five decades. The need to understand evaporative …
Fundecitrus says it repudiates recent articles that claim productivity in Brazil’s São Paulo and Minas Gerais citrus belt will be reduced by 60% in the next five years due to citrus greening disease. Fundecitrus says Chilean and Spanish news portals published such reports on Nov. 14. According to Fundecitrus, this information is not valid, nor was it ever provided by …
The U.S. Department of Agriculture National Agricultural Statistics Service’s (USDA/NASS) final estimates for the 2022–23 season show U.S. citrus production reaching 4.9 million tons, down 12% from 2021–22. This marks the lowest combined production levels for U.S. citrus in at least 50 years. The U.S. citrus crop was valued at $2.6 billion in 2022–23, 13.5% below the prior year’s value. …
It’s no secret that Florida’s citrus industry has seen significant shrinkage since the advent of citrus greening in the state. In the December issue of Citrus Industry magazine, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) economist Ariel Singerman takes an in-depth look at the acreage attrition. He examines the figures by county over the past 20 years. …
Blood oranges could provide citrus growers with another variety to grow in the cold-hardy citrus region. But further research is needed to verify its effectiveness in the Southeast, says Ali Sarkhosh, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor. “We harvested those fruit in Quincy at the North Florida Research and Education Center. We still don’t …
By Xavier Martini and Romain Exilien Despite intensive control efforts, the Asian citrus psyllid (ACP), the vector of Candidatus Liberibacter asiaticus, the bacteria causing citrus greening, remains the most devastating pest of citrus. The ACP typically relies on tactile, visual and odor cues to detect its host. By combining an irritant, a visual masking and a true repellent, University of Florida …
Turkey’s citrus industry has already experienced effects from climate change, Okan Ozkaya, professor at Cukurova University, reported in a recent World Citrus Organisation (WCO) presentation. His presentation was titled Impact of Climate Change in the Citrus Sector in Turkey and the Broader Eastern Mediterranean Area. “Climate change has been a scenario for many years, but we started to see the …
