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 …

Fresh

Slow Start for Fresh Florida Grapefruit Season

Ernie NeffCitrus Greening, Grapefruit

Fresh Florida grapefruit shipments continue to decline in concert with the downturn in production resulting from HLB and other problems. On October 26, the Florida Department of Citrus projected fresh Florida grapefruit shipments will be about 4.13 million boxes this season. Three seasons ago, in 2013-14, fresh Florida grapefruit shipments totaled 6.1 million boxes and have dropped in each season …

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 …

Smelling Huanglongbing for Early-Detection

Josh McGillCitrus Greening

Another early-detection method being developed works by smelling huanglongbing infections in trees. This method detects the different scents plants give off. Researchers at the University of California, Davis have created a test that could lead to advances in fighting huanglongbing (HLB) disease in citrus. Researcher and professor of mechanical and aerospace engineering, Christina Davis, said the test looks for a …

alico

Monitoring Plant Metabolism to Detect HLB

Kayla MercerCitrus, Citrus Greening

HLB pre-screening through analyzing plant metabolism holds potential to be a relatively inexpensive option for growers. Caroline Slupsky, professor in the Department of Nutrition and Food Science and the Department of Technology at the University of California, Davis, is looking at the metabolism of citrus trees and analyzing changes as indicators of stress and disease. Plants’ metabolic pathways change 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 …

HLB root nutrition

Root Nutrition Key in HLB-Infected Trees

Ernie NeffCitrus Greening, Nutrition

University of Florida researcher Jude Grosser focused on root nutrition during the Citrus Nutrition Day at the Citrus Research and Education Center on October 11. In this report, he says citrus roots impacted by HLB are missing the nutrients they need and discusses possible solutions, including what he calls “hybrid nutrition programs.” “We’ve gotten kind of too focused on what’s …

‘Come Home’ to UF-UF/IFAS Agriculture and Gardening Day, Oct. 15

Kelsey FryAgriculture

Agriculture and natural resources interests are invited to come home to the University of Florida Institute of Food and Agricultural Sciences and see some informative exhibits during Agriculture and Gardening Day Oct. 15, outside The Swamp. “Come home” because it’s homecoming weekend at UF, and the Gators are playing the Missouri Tigers. People affiliated with agriculture and natural resources have …

dorian

Post-Hurricane: Some Fruit Drop on River; Interior Mostly OK

Ernie NeffGrapefruit, Weather

Heavy winds from Hurricane Matthew Friday caused some fruit drop in the Indian River citrus area. But the amount of drop was “not catastrophic,” said Florida Citrus Mutual spokesman Andrew Meadows. “The fact that it stayed offshore helped tremendously,” Meadows said. Some Indian River growers and packers told Mutual that in addition to fruit drop, there will likely be some …

florida citrus

ACP Movement Shows History Repeating Itself

Kelsey FryCitrus, Legislative

Research is looking at what we can learn from the Asian citrus psyllid’s (ACP) history, specifically ACP movement throughout Southern California. Psyllid finds in Central California are mimicking the insect’s history of spread. University of California, Department of Agriculture and Natural Resources held it’s California Asian Citrus Psyllid and Huanglongbing Research and Extension Summit at UC Riverside. The summit was …

dorian

Hurricane Preparedness

Josh McGillWeather

By Bob Rouse and Mongi Zekri Little can be done to protect trees and fruit from hurricane velocity wind, but we can take steps to protect the people, equipment and supplies that will be needed for the recovery. Below is a checklist for citrus grove managers. Pre-Hurricane Preparation Checklist Personnel assignments: 1. Make a list of all tasks and make …

Guest Workers: Past, Present and the Future

Josh McGillLabor

By Gülcan Önel and Derek Farnsworth The U.S. agricultural sector has a long history of dependence on foreign workers, and the Florida citrus industry is no exception. Even though mechanical harvesting systems saw increased usage between 1999 and 2006, the discovery of citrus greening in 2005 and its subsequent spread across Florida virtually eliminated mechanical harvesting efforts by 2015 in …

Medfly

Fruit Fly’s Genetic Code Revealed

Daniel CooperCitrus, Industry News Release

An international team of scientists from the U.S. Department of Agriculture (USDA) and other research organizations have sequenced the complete genome of the Mediterranean fruit fly, Ceratitis capitata. This pest attacks more than 260 fruit, vegetable and nut crops worldwide, causing billions of dollars annually in direct damage, export sanctions, lost markets, and other costs. Sponsored ContentA Simpler, Safer and More …

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 …

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.” …

HLB-spreading psyllids

HLB-Spreading Psyllids: Incidence and Intensity

Ernie NeffCitrus Expo, Citrus Greening, Pests

Citrus growers sometimes ask University of Florida entomologist Phil Stansly why they should continue to spray for HLB-spreading psyllids when trees are already infected with the disease. Stansly answered that question at Citrus Expo in August. “There are two issues with HLB,” Stansly says in this interview with Tacy Callies summarizing his Expo presentation. “One is incidence. In other words, …

farmers market

Finding the Best Farmers Market

Daniel CooperAgriculture, Industry News Release

American Farmland Trust Reveals Top Ranked Farmers Markets in America Wednesday marked the end of American Farmland Trust’s annual summer-long Farmers Market Celebration – an effort to encourage shoppers across the nation to endorse their local farmers market as “Best in Class,” rallying support for local farms and family farmers. Sponsored ContentA Simpler, Safer and More Effective Way to Fight …

Rules of the Road for Transporting Farm Workers

Josh McGillCitrus

By Carlene Thissen, Mike Bayer and Fritz Roka The U.S. Department of Labor classifies anyone who for a fee “solicits, recruits, furnishes, hires, employs, houses, and/or transports” seasonal and migrant farm workers as a farm labor contractor (FLC). This article provides an overview of the rules and responsibilities that agricultural employers must keep in mind when driving workers to their …

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 …