cold hardiness

Frigid Florida Weather Has Growers on Alert

Josh McGill Florida, Weather

The coldest temperatures in years predicted for Florida this weekend have fruit and vegetable growers worried and preparing to protect their crops. Temperatures in the 20s and 30s are expected deep into the peninsula of Florida. And the freezing weather could persist for up to four hours or more. Gene McAvoy, associate director for stakeholder relations at the University of …

Nutrition Findings for Florida Citrus

Ernie Neff Nutrition

Florida’s Citrus Nutrition Box Program that began in the fall of 2019 has shown that regional differences occur around the state with secondary macronutrients and micronutrients. It also showed that manganese and zinc are a concern for almost all areas. Jamie Burrow presented those findings, and numerous others, as part of Citrus Nutrition Day in October at the University of …

Apply for a Gulf Citrus Scholarship by Dec. 31

Ernie Neff Scholarship

The citrus growers of southwest Florida are committed to supporting education as a long-term investment in the future of the industry. The first Gulf Citrus scholarship was awarded in 1992 through the Gulf Citrus Growers Association, a trade organization representing growers in Charlotte, Collier, Glades, Hendry and Lee Counties. The Gulf Citrus Growers Association Scholarship Foundation was established in 2000 …

Scout for Problems, Even in CUPS

Ernie Neff CUPS, Pests

Growers should monitor for pests and diseases, even in the citrus under protective screen (CUPS) systems designed to keep HLB-spreading psyllids out of trees, according to entomologist Jawwad Qureshi. He told more than 25 people participating in a Dec. 1 virtual seminar that CUPS “are not foolproof systems,” and said citrus can’t be grown successfully without pest management. Qureshi works …

weather

Cold Protection: The Tried and the New

Ernie Neff cold protection

Tried and proven cold protection techniques and changes to the Florida Automated Weather Network (FAWN) were discussed in a virtual Nov. 17 winter weather program. Chris Oswalt, citrus Extension agent for Hillsborough and Polk counties, summarized the decades-old cold protection techniques still practiced by Florida citrus growers. One of the first steps in cold protection is being prepared by staying …

Impacts of Herbicides on Young Citrus Trees

Tacy Callies weeds

By Ramdas Kanissery, Nirmal Timilsina and Mongi Zekri Weed control is crucial for the growth and establishment of young citrus trees. Chemical weed control with herbicides is an efficient and cost-effective method for managing weeds in newly planted groves. However, before applying herbicide products, care must be taken to avoid damaging young trees and newly planted resets. Every so often, …

Fertilization Methods: Pros and Cons

Ernie Neff Nutrition

Brandon White with the University of Florida Institute of Food and Agricultural Sciences discussed the pros and cons of several types and methods of citrus fertilization at Citrus Nutrition Day on Oct. 26. The event was held at the Citrus Research and Education Center in Lake Alfred, Florida. White recently became the new commercial fruit crop agent for Florida’s Lake …

Regular Leaf Nutrient Analysis Improves HLB-Affected Trees

Tacy Callies Nutrition

By Tripti Vashisth and Davie Kadyampakeni Nutrition management is complex! Multiple factors affect the nutrient uptake and availability in trees. For example, high soil pH can limit the uptake of soil-applied micronutrients such as zinc (Zn) and manganese (Mn). Oxide forms of nutrients might be less available than nitrate or sulfur forms. Moreover, the time and method of nutrient application …

hurricane

Be Prepared for Hurricane Season

Tacy Callies hurricane, Tip of the Week

By Fernando Alferez and Mongi Zekri The National Oceanic and Atmospheric Administration has predicted another above-normal Atlantic hurricane season. While hurricanes have always been a risk or danger to Florida, their threat is growing. Although experts do not anticipate the historic level of storm activity seen in 2020, it only takes one storm to severely impact and devastate citrus groves. It …

Seminar to Address Fruit Drop Questions

Tacy Callies Fruit Drop

Citrus fruit drop before harvest has been a perennial problem for Florida growers but has been particularly challenging this season. Tripti Vashisth and Fernando Alferez of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) will present their latest research on fruit drop and answer questions from growers in a Zoom seminar on Feb. 16. The seminar is …

Research Update on Individual Protective Covers

Tacy Callies Pests

By Fernando Alferez, Susmita Gaire, Ute Albrecht, Ozgur Batuman, Jawwad Qureshi and Mongi Zekri It has been nearly three years since the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) started its studies on individual protective covers (IPCs). The objective of this study is to evaluate the feasibility of IPCs as a strategy to prevent HLB infection of …

New Hurricane Guide for Citrus Growers

Ernie Neff hurricane

University of Florida Institute of Food and Agricultural Sciences citrus horticulturist Fernando Alferez and multi-county citrus Extension agent Mongi Zekri co-authored a new document on the U.S. Department of Agriculture’s Hurricane Preparation and Recovery Commodity Guides website. The Citrus Producers Guide includes long- and short-term recommendations for building resilience to hurricanes in citrus groves, nurseries and citrus under protective screens …

Protecting New Citrus Plantings and Resets From Weeds

Tacy Callies weeds

By Ramdas Kanissery and Mongi Zekri Newly planted citrus trees and resets require more care and attention than established trees, especially when it comes to weed control. Florida’s weather conditions like high summer temperatures and often heavy rainfall make weed control in young groves difficult. Weeds compete with young citrus trees for nutrients, moisture and other resources, and may hinder …

Irrigation Management for Young Citrus Trees

Tacy Callies Irrigation

By Davie Kadyampakeni, Arnold Schumann, Mongi Zekri and Chris Oswalt Irrigation management is important for achieving optimal citrus tree growth and promoting high water- and nutrient-use efficiencies in young trees. In the era of HLB, poor water-management practices, such as infrequent irrigation, lead to water stress in trees resulting in limited growth and impaired root development. On the other hand, …

Sneak Peek: April 2020 Citrus Industry Magazine

Tacy Callies Sneak Peek

As everyone strives to stay healthy amid the coronavirus crisis, the April issue of Citrus Industry magazine focuses on another kind of health — young tree health. In the first of four articles focused on practices for planting new trees, University of Florida (UF) researchers Ozgur Batuman and Megan Dewdney give growers advice on what to watch for when receiving …

IPCs for HLB Prevention in Young Trees

Tacy Callies HLB Management

By Fernando Alferez, Susmita Gaire, Ute Albrecht, Ozgur Batuman, Jawwad Qureshi and Mongi Zekri Controlling the Asian citrus psyllid vector of huanglongbing (HLB) is critical, especially in young trees. Reducing HLB incidence is essential for tree survival and productivity under current endemic conditions. Individual protective covers (IPCs) are a novel strategy based on psyllid exclusion by means of a protective …

citrus

IPCs Effective Against Psyllids and HLB

Ernie Neff HLB Management, Pests, Psyllids

Long-time multi-county citrus Extension agent Mongi Zekri, who serves Southwest Florida counties, says individual protective covers (IPCs) work well in the fight against citrus greening, also known as HLB. “They have been very effective in controlling or managing citrus greening, because they don’t allow the citrus psyllid, which is the vector of the disease, to get to the tree,” Zekri …

April

All In For Citrus Podcast, August 2019

Taylor Hillman All In For Citrus Podcast

August’s All In For Citrus podcast includes some exciting updates from the recent Citrus Expo! First, Michael Rogers, director of the Citrus Research and Education Center, summarizes the good grower responses that the University of Florida Institute of Food and Agricultural Sciences( UF/IFAS) received about the seminar program at Citrus Expo. He discusses the new Hands-on Session that attracted a …

UF/IFAS Personnel Honored

Ernie Neff Awards

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus researchers and one citrus Extension agent were honored this summer, two by the Florida Entomological Society and one by UF/IFAS. JAWWAD QURESHIEntomologist Jawwad Qureshi received the Entomologist of the Year award at the Florida Entomological Society annual meeting. He was also named president of the society for 2018–19. …