Plant Biostimulants — Snake Oils or Beneficial Substances?

Tacy Callies Biostimulants

By Ute Albrecht and Sarah Strauss Recent years have seen an explosion of products termed “biostimulants” as alternatives to traditional chemical products to improve plant growth and productivity, and to enhance the sustainability of agricultural systems. Although there is currently no legal definition of biostimulants, they are usually defined as “substance(s) and/or microorganisms that when applied to plants or the …

Citrus Production in Argentina

Tacy Callies lemons

By Stephen H. Futch and Ariel Singerman In May of 2017, we visited the northwestern citrus production region of Argentina in the provinces of Jujuy, Salta and Tucumán. The purpose of the trip was to learn more about Argentina’s citrus industry and programs being developed to deal with both the Asian citrus psyllid (ACP) and huanglongbing (HLB). Argentina has a …

citrus celebrates anniversary

CREC and FDOC: Decades of Working Together

Daniel Cooper Citrus, Industry News Release, Research

As the University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) celebrates its 100th anniversary, administrators are praising a decades-long relationship between researchers with CREC and the Florida Department of Citrus (FDOC). “Housing the FDOC and CREC scientists at the same location has brought together the expertise needed to address any issue facing the …

citrus greening

Importance of Leaf Tissue and Water Analysis

Ernie Neff Citrus, Water

Oscar Ruiz with Waypoint Analytical discusses the importance of leaf tissue and water analysis. “Leaf tissue analysis is important because we can actually gauge in-season what the plant is capable of uptaking,” he says. That information, along with information garnered from soil sampling, allows the grower to “fine tune the fertility program and adjust it accordingly,” he says. “I recommend …

Will You Be Ready for Postbloom Fruit Drop?

Tacy Callies Diseases, PFD

By Megan M. Dewdney Again in 2016, postbloom fruit drop (PFD) caused widespread problems in Florida groves. There were multiple factors that contributed to the outbreak in 2016. The primary factor was likely the extended bloom that many saw because of a combination of tree stress caused by huanglongbing (HLB) and the very warm winter. Bloom in some groves was …

PFD

Florida on Cusp of Potential PFD Season

Ernie Neff PFD

The timing was perhaps impeccable for a seminar in Arcadia on February 8 that focused on postbloom fruit drop (PFD). Rain had fallen on Central Florida the night before, and some bloom is already on trees. That combination of rain and bloom has led to major PFD outbreaks in recent years. “There’s some bloom out there already,” says University of …

Research Update: Citrus Undercover Production Systems and Whole Tree Thermotherapy

Tacy Callies Citrus

By Arnold Schumann, Laura Waldo and Alan Wright Research for producing huanglongbing (HLB)-free fresh Florida citrus with covered production systems began at the University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center in 2013 and at the Citrus Research and Education Center (CREC) in 2014. These citrus undercover production systems (CUPS) evolved from the …

Control of Stem-End Rot of Fresh Citrus

Tacy Callies Diseases

By Mark A. Ritenour, Jiuxu Zhang and Megan M. Dewdney Decay of fresh citrus fruit is most often caused by fungal pathogens that grow and develop in the hot and wet conditions typical in Florida. While green and blue molds (Penicillium digitatum and Penicillium italicum) and sour rot (Galactomyces citri-aurantii) are the most common postharvest citrus diseases worldwide, the subtropical …

PFD control

Postbloom Fruit Drop Control: Timing Is Key

Ernie Neff Citrus Expo, Citrus Greening, PFD

Timing of fungicide sprays is the key to controlling the postbloom fruit drop (PFD) that caused many Florida citrus growers severe problems this year. That was a central message that University of Florida researcher Natalia Peres delivered at Citrus Expo this summer. In this interview, Peres discusses the keys to proper spray timing, starting with bloom. Peres says longer bloom …

Essential Oil Could Help Prevent Citrus Black Spot

Kelsey Fry Citrus, Citrus Greening

By: Robin Koestoyo FORT PIERCE, Fla. – Dipping fruit after harvest with hot water and essential oil dips may reduce postharvest development of citrus black spot (CBS) lesions per fruit by up to 50 percent, according to new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research. The new management techniques are the result of Jiaqi Yan’s recently …