HLB Management in Brazil

Tacy CalliesCitrus

Observations and lessons learned from a recent citrus grower tour By Stephen H. Futch In June 2016, a group of Florida citrus growers and industry representatives embarked on a trip to tour the Brazilian citrus industry. The primary purpose of the trip was to learn more about how huanglongbing (HLB or citrus greening) is being managed in Brazil and how …

Update on Bactericide Trials

Ernie NeffBactericides, Citrus Greening, HLB Management

A Citrus Research and Development Foundation (CRDF) researcher provided an update on grower trials of bactericides for HLB to the CRDF’s Commercial Product Delivery Committee on December 5. CRDF Chief Operations Officer Harold Browning summarizes the report. “Most of the metrics that we’re most interested in are coming up as we go into harvest,” Browning says. “The true test of …

Managing the Health and Productivity of HLB-Affected Groves

Tacy CalliesHLB Management

By Tripti Vashisth In 2005, huanglongbing (HLB or citrus greening disease) was first discovered in Florida. Florida orange production changed from 242 million boxes in the pre-hurricane, pre-HLB, 2003–2004 season to 81.5 million boxes in 2015–2016. This dramatic reduction in yield is attributable to multiple causes, including a reduction in citrus acreage, citrus canker and other citrus diseases. HLB is …

HLB

Some Growers ‘Being Squeezed More than Others’ by HLB

Ernie NeffBactericides, HLB Management, PFD

Citrus Extension agent Steve Futch answers questions following a grower forum in Arcadia on October 27. Growers discussed production, bactericides for HLB and much more. The forum opened with one grower saying he doesn’t know how much longer he can keep going. Another reported per-acre orange production of 450 to 500 boxes in some blocks – a superb level in …

Controlling HLB with Thermotherapy: What Have We Learned So Far?

Tacy CalliesCitrus Greening, Thermotherapy

By Reza Ehsani, Megan Dewdney and Evan Johnson In the last two years, many growers looked at thermotherapy as a way of keeping HLB-affected citrus trees in production until a more permanent solution could be developed. It has been shown that thermotherapy can kill HLB-causing bacteria under controlled environments. But the exact time and temperature is not known, and it …

Solace Found in Initial Citrus Crop Forecast

Josh McGillCrop Forecast

A bit of weight was lifted off of Florida citrus growers’ shoulders after hearing the U.S. Department of Agriculture’s initial 2016–17 Florida citrus crop forecast that calls for 70 million boxes of oranges. Citrus industry members gathered at Florida Citrus Mutual’s Political Action Committee Clay Shoot and Crop Estimate Luncheon to hear the live forecast from Southeast AgNet. The event, …

Crop size, PFD

Joe Davis Jr. Predicts Orange Crop Size; Discusses PFD Impact

Ernie NeffBactericides, Citrus Greening, Forecast, PFD

Grower Joe Davis Jr., a panelist at a Peace River Valley Citrus Growers Association gathering Thursday, says he expects a Florida orange crop of 61 to 70 million boxes this season. Last season’s Florida orange crop was 81.5 million boxes. “Our groves are down,” Davis says. “We’re guessing that earlies and mids will probably be down about 10 percent, and …

PFD, HLB, Crop

Peace River Growers Discuss Citrus Issues

Ernie NeffBactericides, Citrus Greening, PFD

Six citrus growers shared their views on a wide range of topics with about 50 fellow producers at a Peace River Valley Citrus Growers Association (PRVCGA) gathering Thursday in Bowling Green. PRVCGA Executive Director LeAnna Himrod, who posed questions for the panelists, summarizes the discussions by topic. Crop size: “I think that everyone’s expecting it to be lower than last …

citrus crop forecast

How to Irk the Crop Forecast Lady

Tacy CalliesForecast

Candi Erick is keenly involved in production of Florida’s citrus crop forecasts. She’s easy to get along with, but there is one way to get under her skin. By Ernie Neff If you want to irritate Candi Erick, whose primary job is overseeing data collection leading to Florida’s citrus crop forecasts, just tell her, “It’s good enough for government work.” …

Pruning to Rehabilitate HLB-Affected Sweet Orange Trees

Josh McGillCitrus

By Tripti Vashisth and Troy Gainey In the last 11 years, Florida orange production has declined more than 60 percent. This dramatic reduction in yield is attributable to multiple causes, including loss of citrus acreage in the state, citrus canker and other diseases, but huanglongbing (HLB) is now recognized as the primary reason for declining citrus yields. HLB-affected trees are …

PFD and HLB

Trees Look Good but PFD and HLB Will Impact Yield

Ernie NeffCitrus Greening, PFD

Several citrus growers attending a grower forum in Sebring last week said groves are looking very good even though fruit production is expected to be low this season. John Barben, a Highlands County grower and the new president of Florida Citrus Mutual, summarized the situation. “Trees are looking good,” Barben said. “We had a lot of rain the last couple …

HLB and ‘Tolerance’ as a Practical Matter in Choosing Rootstocks

Tacy CalliesRootstocks

By Bill Castle (Editor’s note: Click on the graphs throughout the article to enlarge them.) By classic biological definition, a particular citrus rootstock-scion combination when infected with Candidatus Liberibacter asiaticus (CLas) would be considered tolerant if infected trees had no more than slight reductions in performance, sometimes accompanied by a reduced level of the pathogen. That definition implies that the …

Bactericide Survey Results Summary

Josh McGillBactericides, Citrus Greening

By Stephanie Slinski and Harold Browning (Editor’s note: Click on the graphs throughout the article to enlarge them.) Bactericides have been available to growers as a new tool to improve the health of HLB-infected trees since early March 2016. This use has been under a crisis declaration from the Florida commissioner of agriculture, but on August 15 of this year, …

bactericides for HLB

Snively Discusses Use of Bactericides for HLB

Ernie NeffBactericides, Citrus Expo, Citrus Greening

Jim Snively of Southern Gardens Citrus says his company is trying bactericides for HLB on one-tenth of its 10,000 citrus acres. The company is working with the Citrus Research and Development Foundation to analyze fruit drop, tree condition and more in blocks treated with bactericides. He believes it will take two to three years to determine if the bactericides are …

Putnam: Private Citrus Forecast ‘a Kick in the Gut’

Tacy CalliesForecast

Florida Commissioner of Agriculture Adam Putnam expresses pleasure at celebrating the 25th Citrus Expo and dismay at a private citrus forecast of 60.5 million boxes of Florida oranges next season. “Boy, what a kick in the gut that forecast was,” says Putnam, who is a citrus grower. He notes that post-bloom fruit drop no doubt played a role in the …

BASF Announces Label for Priaxor® Fungicide for Florida Citrus

Tacy CalliesCitrus

BASF announces that Priaxor® fungicide has received federal and Florida approval for use on all citrus varieties in Florida. Priaxor® fungicide is already being used in sugarcane and vegetables throughout the state and the United States. Priaxor® fungicide is a mixture of the active ingredient in Headline® fungicide and a new systemic fungicide Xemium®. Testing in Florida has shown the …

New Method Tells Growers More About Citrus Decay

Kelsey FryCitrus

With citrus growers trying to save their groves in the wake of the deadly greening disease, a University of Florida Institute of Food and Agricultural Sciences researcher has found a new technique that could help growers answer a vexing question – why so much fruit is dropping to the ground prematurely. If we know why fruit is dropping, we can …

bactericides survey

Sparks Discusses Citrus Tariffs and PFD

Ernie NeffLegislative, Pests

Florida Citrus Mutual CEO Mike Sparks discusses the association’s annual conference this week, including the election of a new association president, the U.S. presidential race from a tariff perspective, and postbloom fruit drop (PFD). During the conference, Mutual’s trade attorney reported on presidential candidates’ views regarding tariffs, which can impact citrus trade. Sparks comments on that report: “When you hear …

PFD

PFD, Bactericides for HLB are Top Citrus Grower Concerns

Ernie NeffCitrus, Citrus Greening, Pests

Postbloom fruit drop (PFD), along with the use of bactericides to control HLB, were the big issues for more than 40 participants in a grower roundtable Wednesday in Wauchula. LeAnna Himrod, one of the roundtable hosts, summarizes the issues addressed. Regarding bactericides, she reports: “There were a lot of questions about the bactericides regarding timing: What’s the best time of …

European

Slight Changes in European Citrus Production

Daniel CooperCrop Forecast, International

The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) projected a slight decrease in European orange production in 2023–24 and a slight increase in orange juice (OJ) and grapefruit production. ORANGES The USDA FAS semi-annual report projects 2023–24 EU orange production at 5.475 million metric tons (MMT), down from the already short prior-year crop of 5.58 MMT. Orange production …