citrus greening

California Ag Chief Prepared to Battle HLB

Len Wilcox California Corner, HLB Management

In an interview at the Citrus Research Board’s (CRB) annual conference last month, Karen Ross, secretary of the California Department of Food and Agriculture (CDFA), said the present status of huanglongbing (HLB) disease is similar to another disease that challenged the California citrus industry years ago. Pierce’s disease was a potentially devastating threat long before HLB. “One of the things …

HLB

For HLB: ‘We’ve Done Everything That Could Be Done’

Ernie Neff Citrus Greening, HLB Management

The long-time project manager for the Citrus Research and Development Foundation (CRDF) says the group formed to find solutions to HLB has done the best it can. Tom Turpen with Technology Innovation Group was recently honored for his service, which is being curtailed. Turpen actually began work with CRDF’s predecessor, the Florida Citrus Production Research Advisory Council, soon after HLB …

HLB

Replanting Trees in the Face of HLB

Ernie Neff Citrus Greening, HLB Management, planting

  At Citrus Expo, Aaron Himrod of Himrod Citrus Nursery made the case for replanting citrus trees lost to HLB and other causes. “I think growers need to replant because we are having some success with young trees that we’re not having with older trees,” Himrod said. “The young trees are responding a lot better to our treatments. And we …

What Lies Ahead for Florida Citrus?

Tacy Callies Diseases, HLB Management, Pests, Varieties

Editor’s note: This article is part of the special coverage on the 100th Anniversary of the UF/IFAS Citrus Research and Education Center, found in the October 2017 issue of Citrus Industry magazine. By Tom Nordlie Although it’s difficult to predict future events, directors of the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) …

CRDF Update on NuPsyllid Project and More

Ernie Neff HLB Management, Psyllids

Citrus Research and Development Foundation (CRDF) Chief Operations Officer Harold Browning reports on the conclusion of the five-year NuPsyllid project aimed at developing a psyllid that won’t spread HLB. “The NuPsyllid project was a project funded through the USDA competitive grant program and was established in 2012 to develop a psyllid that would not be capable of transmitting the (HLB-causing) …

Current Challenges to Florida Citrus

Tacy Callies Citrus Greening, Diseases

Editor’s Note: This article was written before Hurricane Irma made landfall in Florida and damaged the state’s citrus industry. This article is part of the special 100th anniversary coverage of the Citrus Research and Education Center, found in the October 2017 issue of Citrus Industry magazine. By Tom Nordlie What are the current challenges to Florida’s citrus industry? To a …

HLB

Gmitter on Surviving HLB, What to Plant and Lemon Potential

Ernie Neff HLB Management

In a wide-ranging talk at Citrus Expo in August, University of Florida Institute of Food and Agricultural Sciences researcher Fred Gmitter discussed many topics important to growers. Subjects included making variety decisions when planting, surviving HLB, and the potential for lemons in Florida. He summarizes his discussion: “We can give information (about citrus varieties), but we don’t want to give …

psyllids

Keep Spraying Psyllids in HLB-Infected Groves

Ernie Neff HLB Management, Psyllids

  In a Citrus Expo talk, University of Florida Institute of Food and Agricultural Sciences entomologist Phil Stansly focused on the importance of continuing to spray psyllids in groves already infected with HLB. The main reason to do that, he says, is to keep psyllids from re-inoculating trees with HLB by “pumping more and more bacteria into that tree.” He …

citrus greening

Organic Management for HLB

Abbey Taylor Citrus Greening, HLB Management, Organic

By Jaci Schreckengost One of the topics researchers and growers discussed at the 2017 Organic Food & Farming Summit was what can be done organically to combat huanglongbing (HLB), also known as citrus greening disease. Florida Organic Growers hosted the summit in Gainesville. It featured many workshops in which researchers and growers could discuss challenges and management practices. Tripti Vashisth, …

growers

Hurricane Recovery Hotline for Citrus Growers

Tacy Callies HLB Management

As growers assess the damage from Hurricane Irma, University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) citrus specialists are available to answer their questions related to hurricane recovery practices for HLB-affected citrus groves. To provide answers as quickly as possible, the UF/IFAS Citrus Growers’ Hotline (863-956-8611) has been established for growers to call with their questions. Staff will be answering the …

bactericides

Growers Report on Use of Bactericides for HLB

Ernie Neff Bactericides, HLB Management

Ariel Singerman, economist with the University of Florida’s Institute of Food and Agricultural Sciences, reports on a grower survey he conducted regarding use of bactericides against HLB. “According to my survey, which included 62 growers accounting for approximately 160,000 acres, 92 percent of the growers applied bactericides,” Singerman says. “The majority did three applications, and they spent between $100 and …

bactericides

Grower Jerkins Revises Stance on Bactericides

Ernie Neff Bactericides, HLB Management

At Citrus Expo in August, Premier Citrus President Tom Jerkins clarified comments about bactericides and their effectiveness that he made at the June Florida Citrus Mutual conference in Bonita Springs. “In Bonita Springs, I kind of stated publicly it was difficult for Premier to see a difference in the treated (with bactericides) versus untreated,” Jerkins says. “I said it was …

Florida orange

More Fruit, Better Tree Health in Highlands County

Ernie Neff Citrus Greening, fruit, PFD

Echoing comments from growers in some citrus-growing regions in southern Florida, Highlands County citrus Extension agent Laurie Hurner says Highlands County appears to have more fruit and better tree health this year. “It’s interesting. You drive up and down Highway 27, and there is a lot more fruit out there, I think,” says Hurner, who is also the Highlands County …

HLB

Bactericides, Psyllids and HLB-Resistance/Tolerance

Ernie Neff Bactericides, HLB Management, Psyllids

At a recent meeting of the Citrus Research and Development Foundation’s (CRDF) Commercial Product Delivery Committee, approximately half of the agenda was devoted to bactericides and HLB-spreading psyllids. Reflective mulch that keeps psyllids away and field trials for HLB-resistant or tolerant rootstocks and scions were also addressed. CRDF Chief Operations Officer Harold Browning summarizes some of the discussions. “The issue …

system

System Screens Out Citrus Greening-Carrying Insect

Daniel Cooper Citrus Greening, Industry News Release, Research

Imagine camping in the deep woods. You’d want a tent with mesh that prevents bugs – even those as small as gnats – from entering into your wildlife hangout. That’s the idea behind citrus under protective screens, or CUPS, which helps keep away a pinhead-sized insect that causes citrus greening, University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) scientists …

acp

HLB-Spreading Psyllids Resistant to Insecticides

Ernie Neff HLB Management, Psyllids

Ears perked up in the Citrus Expo seminar hall last week when Lukasz Stelinski reported incidences of Asian citrus pysllid resistance to insecticides, “particularly the neonicotinoid group of insecticides in Florida.” The neonicotinoids have been a key weapon against the psyllids that have spread HLB to groves statewide. Stelinski, an entomologist with the University of Florida’s Institute of Food and …

bayer crdf

CRDF President on Bayer Partnership

Daniel Cooper Citrus Greening

We first told you last week that the Citrus Research and Development Foundation (CRDF) and Bayer CropScience had announced a new partnership during Citrus Expo to fight citrus greening. Various solutions are being researched, like genetically improved trees. But CRDF President Tom Jerkins knows help is needed before those trees are ready. Sponsored Content5 Facts About Fire Ants and How …

Rootstocks and HLB Tolerance — Another Perspective

Tacy Callies HLB Management, Rootstocks

By Ute Albrecht Tolerance to a disease is generally defined as the ability to be productive in the presence of disease-causing organisms. This is contrary to resistance, which is defined as the ability to completely evade a pathogen due to specific resistance mechanisms. The question as to what defines an HLB-“tolerant” rootstock was posed in an article by Bill Castle, …

Ag Secretary Perdue Gains Optimism About Citrus Industry at Citrus Expo

Abbey Taylor Citrus Expo, Citrus Greening, Legislative

U.S. Secretary of Agriculture Sonny Perdue visited Citrus Expo on August 16. During his visit, he held a listening session alongside Congressman Tom Rooney and citrus industry professionals. The main topic during the session was citrus greening and the importance of research to combat the devastating disease. Growers and industry leaders spoke about the challenges of the Florida citrus industry. …

Perdue Rooney

Perdue Optimistic Researchers, Growers Will Beat Citrus Greening

Daniel Cooper Citrus, Citrus Expo, Citrus Greening

U.S. Agriculture Secretary Sonny Perdue is in Florida this week, where he attended Citrus Expo at the Lee Civic Center in North Fort Myers. While in the state, he has been able to learn firsthand about efforts to combat citrus greening. Hear more from the U.S. Department of Agriculture’s Stephanie Ho: Sponsored Content5 Facts About Fire Ants and How to …