Citrus Australia, representing the nation’s citrus growers, has urged the federal government to reject proposed changes that could have 100 percent juice rated the same as diet cola on a health scale. Under proposed guideline revisions, the Health Star Rating (HSR) for fresh juice with no added sugar will fall from 5 stars to as low as 2.5 stars. The …
New Research Center in Brazil to Seek Citrus Greening Solutions
With an investment of $200 million (in Brazilian reals), three citrus research organizations in Brazil have partnered to create a research center in São Paulo to seek solutions to citrus greening. The São Paulo Research Foundation (FAPESP), Fundecitrus and Luiz de Queiroz College of Agriculture at University of São Paulo (ESALQ-USP) agreed on Jan. 12 to establish the Applied Research Center …
Chinese Mandarin and Grapefruit Forecast
The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) recently projected 2025–26 production and trade volumes for Chinese tangerines/mandarins and pomelos/grapefruit. TANGERINES AND MANDARINS For 2025–26, China’s production of tangerines and mandarins is forecast at 27.1 million metric tons (MMT), a slight increase from 2024–25 largely due to favorable weather conditions. According to USDA FAS, China has 890,100 hectares …
China’s Orange and OJ Production to Increase
The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) has forecast China’s orange and orange juice (OJ) production and trade levels for the 2025–26 season. ORANGES China’s orange production is forecast at 7.68 million metric tons (MMT), up slightly from the prior season’s 7.62 MMT. Oranges are grown on 816,500 hectares. China is expected to import 161,000 MT of …
CITRUS NURSERY SOURCE: NVDMC’s Research Initiatives for 2025–26
By Peter Chaires Last month’s Citrus Nursery Source article promised additional details on New Varieties Development & Management Corp.’s (NVDMC) 2025–26 sponsored projects. While there is only space for general summaries, it is important to highlight the areas of focus for each research team, and the emphasis on short-term benefits while continuing to build a foundation for the future. NVDMC …
The Relationship Between Snails and Weeds Needs Research
The preference of Bulimulus bonariensis snails to feed on weeds in citrus groves does not necessarily imply that increased weed management will lead to a reduction in pest populations. This relationship requires further research by Lauren Diepenbrock, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor and entomologist. “It’s something I think we really need to look …
Insights Into HLB Tolerance
A study by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers provides insights into the mechanisms of HLB tolerance in C. australis hybrids. A recent article about the study by Sheetal Ramekar, Lamiaa M. Mahmoud, Jaideep Kaur Deol, Stacy Welker and Manjul Dutt of the UF/IFAS Citrus Research and Education Center was published in BMC Genomics. Citrus …
Fundecitrus Hosts California Delegation
Brazil’s Fundecitrus recently hosted a delegation of approximately 20 agricultural leaders from California. Karen Ross, secretary of the California Department of Food and Agriculture, led the delegation. The group visited Brazil to learn more about Fundecitrus’ research, education, training and sustainability initiatives focused on citrus farming. The Californians participated in technical discussions with researchers and took a tour of Fundecitrus’ …
CITRUS NURSERY SOURCE: Exciting Opportunity for Citrus Nurseries
By Peter Chaires The International Society of Citrus Nurseries (ISCN) will hold its International Congress in Vina del Mar, Chile, on Aug. 18–19. Founded in 1981, ISCN was formed: ATTENDANCE AND TOPICS The International Congress is an opportunity to establish meaningful relationships, gain exposure to practical and academic information and tour nurseries and local citrus production. The event is not …
Rootstocks for Improved Tolerance to HLB
By Lamiaa Mahmoud and Manjul Dutt Utilizing tolerant rootstocks to combat HLB is a long-term management strategy that can help sustain productivity and enhance tree survival, especially when implemented alongside other HLB management approaches. Australian limes are tolerant to HLB, and their DNA can be incorporated into HLB-susceptible citrus using conventional breeding methods to enhance tolerance to HLB. Over the …
Forecast for Chinese Mandarin and Grapefruit Crops
A U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) report forecasts Chinese mandarin and grapefruit production will both increase slightly in 2024–25. TANGERINES/MANDARINS China’s production of tangerines and mandarins is forecast at 27 million metric tons (MMT), up from 26.9 MMT the prior year. Increasing production in multiple cities is expected to outpace the negative effects of citrus greening …
Georgia Citrus Association Planning California Citrus Tour
The Georgia Citrus Association (GCA) is organizing an educational tour of citrus operations Kings River Packing and AC Foods in California April 14–17. Kings River Packing is a family-owned citrus grower rooted in California’s Central Valley, with a legacy dating back to 1853. Eight generations later, Kings River Packing has expanded from its original 160-acre homestead to encompass 3,500 acres …
Global Orange and OJ Production Forecast
Global orange production is forecast to decline in 2024–25 by the U.S. Department of Agriculture Foreign Agricultural Service (USDA/FAS), but orange juice (OJ) production is expected to increase. ORANGES Production of global oranges is forecast down 662,000 tons to 45.2 million tons. Higher production in Brazil is expected to be more than offset by lower crops in Egypt, Türkiye and …
Japan’s Mandarin and Orange Production
Japan’s mandarin and orange crops are both forecast to decline in 2024–25 by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS). MANDARINS Japan’s mandarin production is estimated at 830,000 metric tons (MT) for 2024–25, a 4.7% reduction from the prior year. Mandarin production in Japan continues to decline because of high summer temperatures, in addition to a decreasing …
Southern Hemisphere Citrus Exports Decline
Total citrus exports from the Southern Hemisphere fell in 2024 after several years of marked growth. The main culprit was South Africa, which contributed two-thirds of the Southern Hemisphere’s exports at 2.23 million tons. SOUTH AFRICA South Africa is by far the main exporter of fresh citrus in the Southern Hemisphere. In this region, South Africa is traditionally the largest …
China Has Changes in Orange and OJ Production
China, the world’s largest citrus producer, is forecast by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) to produce 7.62 million metric tons (MMT) of oranges in marketing year 2024–25. That’s a slight reduction from prior year production of 7.63 MMT. A range of weather-related issues is threatening orange production, including persistent rain in April and May that …
International Project Arms Citrus Industry Against HLB
Australia’s New South Wales (NSW) Government has partnered with the Australian Centre for International Agricultural Research and Hort Innovation to prepare the citrus industry against huanglongbing (HLB). Although widespread in Asia and found in North and South America, HLB is not known to be present in Australia. The psyllid that spreads HLB is also absent from Australia. A collaborative research …
CITRUS NURSERY SOURCE: What’s on Tap for 2024–25
By Peter Chaires The New Varieties Development and Management Corp. (NVDMC) has awarded funding to citrus projects for the 2024–25 season. Exciting things are happening in crop transformation, but significant progress is also being made in conventional breeding. The NVDMC board continues to support conventional breeding projects, each with a focus on near-term results, while still setting a foundation for …
Queensland Fruit Fly Host List Includes Citrus
The U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA/APHIS) in June established a host list of regulated articles for the Queensland fruit fly (QFF). The pest, which has been found in California, is native to Australia and is not endemic to the United States. QFF attacks more than 120 plant species, including numerous commercial varieties of fruits …
Interstock Pros and Cons for HLB Management
The pros of using interstocks for HLB management seemed to outweigh the cons, based on a presentation horticulturist Manjul Dutt made at this spring’s Florida Citrus Growers’ Institute. Dutt is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor. An interstock is a graft of a citrus selection that can be used as a bridge between …





























