The U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) recently forecast Turkey’s 2021–22 fresh production of tangerines and mandarins at 1.81 million metric tons (MMT). That is 200,000 metric tons (MT) or 14% higher than the prior year. Turkey’s tangerines and other citrus are mainly grown in the country’s Mediterranean region. Increased mandarin production in the Mediterranean region is expected …
Chinese Rootstocks Show Promise in Australia
Preliminary data from an Australian research project suggest Chinese rootstocks No. 24 and 85-24 are having a dwarfing effect on citrus tree growth and will be candidates for future high-density cropping systems. Citrus Australia reported that those rootstocks have strong potential in heavy soils, and that results on deep sandy loam soil are also very encouraging. Tahir Khurshid from the …
Managing Macronutrients and Micronutrients
By Davie Kadyampakeni Nutrients are needed for optimal citrus tree growth, fruit yields and juice quality. Any nutrient deficiencies could result in low yields and decreased revenue. Make sure citrus trees receive adequate macronutrients and micronutrients at all times. Macronutrients are those nutrients needed in large quantities to influence yield, growth and fruit quality. Macronutrients are further divided into two …
Progress in Developing Improved Citrus Rootstocks to Mitigate HLB
By Jude Grosser, Manjul Dutt and Fred Gmitter Exploiting citrus genetic diversity is the key to defeating HLB. Plant species have survived for millennia with evolving, hostile pathogens. This is possible through natural selection within genetically diverse populations. Tolerant or resistant individuals survive and intermate, get through the bottleneck, and the species evolves. Current citriculture is based on extremely limited …
FFAA Conference Takes Up Nutrient and Water-Quality Issues
Florida Fertilizer & Agrichemical Association members gathered in Palm Beach recently for the organization’s annual conference. The status of nutrient regulations and water-quality issues were at the top of the agenda for the group. Ernie Barnett, Florida Land Council president, addressed those issues during the conference. He has been involved with water issues in the state for more than 30 …
Grapefruit in Turkey: Production Up, Acreage Down
Turkey is forecast to produce 249,000 metric tons (MT) of grapefruit in 2021–22, up 5% over the prior year, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) reported. The increased production is due to better yields resulting from favorable weather conditions in the Mediterranean growing region, USDA/FAS stated in its semi-annual report on Turkish citrus. Improved yields have allowed …
Pay Attention to pH for Best Nutrient Uptake
There 17 essential elements that plants need to grow. Three of those elements come to plants via water and the atmosphere. The 14 other elements come from fertilizer applications. Almost all of those are dependent on soil pH to determine how well they are picked up by plants’ root systems. Getting the soil pH just right was discussed in the …
Expectations for Brazil’s 2022–23 Orange Crop
Brazil’s 2022–23 orange harvest is expected to yield a crop of 414.4 million 40.8-kg boxes (MBx), an increase of 15% over the prior season’s production. That forecast was issued by the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) in its semi-annual report on Brazilian citrus. Most of Brazil’s 2022–23 orange harvest will come from the state of São Paulo …
Unlock Soil Nutrients to Benefit Your Citrus Grove
Florida citrus growers are facing a rising mound of challenges these days. With citrus greening disease (HLB) devastating groves, low supply, soaring fertilizer prices and a substantial increase in overall production costs, the current odds are stacked high against citrus growers. This is an industry in crisis. Fortunately, science is catching up with new solutions to combat these urgent issues. …
PIECES OF THE PAST: Pounding the Pavement
By Brenda Eubanks Burnette I was reading a book about Dundee Citrus Growers Association, “D Is for Diamonds,” by Gordon Smith when I came across a story about Hoyle Pounds. He was inducted into the Florida Agricultural Hall of Fame in 1980 and the Florida Citrus Hall of Fame in 1986. Pounds had a long career as an innovator. He …
Selecting the Right Leaves for Sampling
By Jamie D. Burrow and Tripti Vashisth With the increased cost and limited availability of fertilizer, purchasing decisions are more important now than ever. Collecting the right leaves for sampling is the first step to making fertilizer decisions. Leaf samples should consist of 100 leaves that are 4- to 6-month-old spring flush leaves taken from nonfruiting branches. WHY LEAVES FROM …
Experimenting With Cover Crops: Results From Three Years of Trials
By Sarah Strauss, Antonio Castellano-Hinojosa, Davie Kadyampakeni, Ramdas Kanissery and Tara Wade Cover crops, which are planted specifically for soil enhancement and not for sale or harvest, can improve soil conditions and production for a variety of crops. However, there have not been many studies documenting changes to soil conditions and production when using cover crops in citrus. The University …
Citrus Industry Priorities Highlighted at GCGA Annual Meeting
Citrus industry growers and allied members of the Gulf Citrus Growers Association (GCGA) gathered in Fort Myers last week for the association’s annual meeting. Matt Joyner, executive vice president/CEO of Florida Citrus Mutual, recapped Florida’s 2022 legislative session and touched on some other priorities during his address to the group. Joyner said the legislative session was a strong one for …
Nutrient Application Rates Bill Signed Into Law
Florida Citrus Mutual Executive Vice President/CEO Mathew Joyner announced that Gov. Ron DeSantis signed SB 1000, the Nutrient Application Rates bill. Joyner called SB 1000 “a critical piece of legislation.” See the full text of the new law here. The law takes effect July 1. “Sponsored by Senator Ben Albritton and Representative Lawrence McClure, the bill had previously passed both …
Ag Groups Want Glyphosate Case Heard
A total of 54 agricultural organizations have voiced concern regarding the possibility of a detrimental precedent being set. A letter was sent to President Joe Biden outlining concerns related to an amicus brief that was recently submitted to the U.S. Supreme Court (SCOTUS). In the brief, Solicitor General Elizabeth Prelogar advises SCOTUS against hearing a case related to glyphosate and …
Australia Evaluating Dwarfing Rootstocks
Tahir Khurshid of Australia’s New South Wales Department of Primary Industries (NSW DPI) is leading a project evaluating several overseas rootstocks budded to a range of mandarin and sweet orange varieties. One of the components is evaluating the rootstocks for their dwarfing effect, which will potentially produce small trees for high-density planting systems for the citrus industry. Size-controlling rootstocks have …
Heritage Practices for Today’s Challenges
By Brad Turner Cover cropping and composting in Florida citrus production are not new concepts. Our ancestors understood the basic principles and implemented these practices just a couple of generations ago. YESTERDAY AND TODAYAs a boy, I can remember an old citrus grower telling me how beggarweed and crotalaria, both native nitrogen-fixing legumes, growing wild in neighboring fields would be …
Sneak Peek: June 2022 Citrus Industry
In the quest to keep HLB-infected citrus trees productive, many growers are turning to techniques to improve soil health. That’s the focus of the June issue of Citrus Industry magazine. The hope is that better soil health will lead to better tree health. Methods under study include compost, cover crops and oak mulch. Citrus grower and consultant Brad Turner makes …
Uncle Matt’s Organic Launches Low-Calorie OJ
Uncle Matt’s Organic recently announced the launch of its Matt50 orange juice beverage. Matt50 contains half the sugar and calories of regular orange juice and is boosted with Vitamin C, prebiotics, probiotics, calcium, potassium and folate. Susan McLean, Uncle Matt’s Organic vice president of marketing and innovation, said Matt50 contains just 50 calories per serving. It is sweetened with organic stevia, a …
Keeping Soil pH at the Optimal Level
By Brandon White This time of year is the end of the peak nutrient demand for citrus trees. Regardless of the types of fertilizer or inputs applied in the groves, trees have been taking up nutrients while growing in full tilt during the spring season. One of the greatest factors determining how well trees take up nutrients is soil pH. …





























