The American Association for the Advancement of Science (AAAS) has elected 19 University of Florida faculty to its newest class. The honor recognizes extraordinary impact and achievement across disciplines. Two of those honored, Lukasz Stelinski and Nian Wang, work at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Stelinski is a professor …
Planning Your 2023 Pest Management
By Lauren Diepenbrock Pest management is a year-round challenge in Florida citrus. With the warm climate, pests are at the ready as soon as plant resources are available to them. With knowledge of insect and mite biology in relation to tree phenology, plans can be developed to protect fruit and maintain productive citrus trees. Populations of some highly problematic pests …
Investing in Artificial Intelligence
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) breeders produce new citrus plants more quickly than they can figure out if consumers like how the new fruit varieties taste. In the race to create versus evaluate, creators lead evaluators by hundreds of individual plants at a time. It takes a post-doc a …
Get the Timing Right for Gibberellic Acid Applications
By Tripti Vashisth Since 2021, a number of Florida growers have adopted the use of gibberellic acid (GA) in their grove management programs. This widespread adoption is due to the fact that GA-treated trees show canopy rejuvenation and reduction in preharvest fruit drop, resulting in improved yields. The research on Valencia shows that the effect of GA improves over time. …
Blanket Flowers Increase Arthropod Predators and Pollinators in Citrus Groves
By Angela Chuang and Lauren Diepenbrock While many arthropod predator and pollinator activities benefit crop quality and yields, traditional farming environments may not be ideal habitats to support their survival year-round. For example, wild bees or flies that pollinate citrus may need other sources of nectar and pollen when citrus is not flowering. Planting wildflowers near crop fields to improve …
Hurricanes Complicate Citrus Flowering
In the latest episode of the All In For Citrus podcast, Tripti Vashisth discusses the citrus flower bud advisory system. The service is provided by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The advisories on flowering generally start before Thanksgiving and run through the end of February or early March. “The goal of the flower bud …
Bugs Under the Covers
Individual protective covers (IPCs) do an excellent job keeping HLB-spreading Asian citrus psyllids (ACP) out of young citrus trees, showing a 99.6% reduction in ACP compared to control trees. But they don’t provide “one and done” pest control, according to University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Lauren Diepenbrock. In fact, IPCs “create a perfect environment …
The Most Critical Step to a Good Nutrition Program
By Tripti Vashisth, Faisal Shahzad and Jamie Burrow Leaf nutrient analysis is an important part of a successful citrus management program. Good fertilization practices are critical for optimal crop production, especially in HLB conditions. The two main objectives of nutrition management in citrus are 1) optimum and consistent yield and 2) building a strong tree that grows and produces year …
It’s Time to Target Adult Asian Citrus Psyllids
By Lauren Diepenbrock Pest management is an ongoing effort in Florida citrus. Taking advantage of pest life cycles has been shown to be an effective tool for reducing populations of target pests. For many citrus growers, managing impacts of the Asian citrus psyllid (ACP), the vector of huanglongbing (HLB), is part of the annual management plan. As we enter the …
All In For Citrus Podcast, December 2022
The December All In For Citrus podcast includes a discussion with Michael Rogers, director of the Citrus Research and Education Center, about ongoing efforts growers are making to rehabilitate citrus groves after Hurricanes Ian and Nicole. Rogers also addressed some longer-term research being conducted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to develop trees that …
CUPS Can Be More Profitable Than Conventional Production
High yields of HLB-free fruit can hypothetically be sustainably produced in citrus under protective screen (CUPS), Arnold Schumann said at a Dec. 14 field day at the Citrus Research and Education Center (CREC). He backed that up with data showing high yields from Ray Ruby grapefruit planted at high densities and fertigated in CUPS. Trees in his CUPS facility are …
New Dollars Flow to Citrus Research Projects
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) recently received a large grant from the U.S. Department of Agriculture National Institute of Food and Agriculture (NIFA). Michael Rogers provided details of the grant totaling $16.5 million during the latest All In For Citrus podcast. Rogers is the director of the Citrus Research and Education Center (CREC) in …
CUPS Weather Hurricane Ian Well
In the search for ways to survive citrus greening, some growers have chosen the citrus under protective screen (CUPS) system as their solution. While CUPS can be costly to construct, it has proven to effectively prevent the deadly disease. But some have asked if the structures would hold up in extreme weather and adequately protect the trees. Hurricane Ian helped …
Flower Bud Advisories Have Begun
Regular flower bud advisories from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) were restarted Nov. 21 and will be provided every other week through early spring. Associate Professor Tripti Vashisth provides the advisories. The advisories provide critical information about the intensity and time of citrus blooms. Growers use this information to determine when to spray for …
Flower Bud Advisories Promote Better Planning
By Tripti Vashisth In Florida, it is the time of year to start following citrus flower bud induction conditions for next year’s bloom. Citrus flower bud induction starts in the fall and usually is complete by early January. Low temperatures first stop growth and then promote induction of flower buds as more hours of low temperatures accumulate (below 68 degrees). …
Citrus Breeder: Growers Need to Think More Out of the Box
If cold-hardy citrus growers diversified their crops and not put all of their eggs in the satsuma basket, it would provide them a better chance at long-term sustainability. It would allow producers an opportunity to combat the negative national stigma concerning citrus juices, says Jude Grosser, a professor of plant cell genetics at the University of Florida Institute of Food …
Display Day Draws Good Crowd
Fruit display days are an integral part of the citrus breeding process. The evaluations provided by participants give important feedback on the taste, appearance, texture and overall desirability of the fruit sampled whether it be for juice or the fresh market. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a display on Nov. 14 at the …
Oswalt Earns Extension Mentor of the Year Award
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Of all the things Chris Oswalt has delivered for the citrus industry — weather data, freeze-protection advice, Extension programming — his most valuable contribution might be his mentorship of a new generation of citrus agents. GUIDING CAREERSYou likely wouldn’t have Danielle Sprague assisting a cold-hardy citrus association in North Florida were it not for …
Citrus Canker and Black Spot Management After Hurricane Ian
By Megan Dewdney The story of citrus canker in Florida is unfortunately linked to hurricanes. Canker spreads far and wide with the aid of the storms. Not only can the heavy rains and high winds move the bacterium among locations, but the winds cause wounds in the canopy. Ragged leaves, scoring of leaf surfaces, thorn scratches on branches and more …
Changing Psyllids to Make Them Incapable of Spreading HLB
By Kirsten S. Pelz-Stelinski and Lukasz L. Stelinski Managing Asian citrus psyllids (ACP) remains a consideration for growers because psyllids transmit the citrus greening disease pathogen, Candidatus Liberibacter asiaticus (CLas), to newly planted trees. There are several tools that can reduce psyllid populations or mitigate the symptoms of HLB and improve the health of infected trees. However, additional methods that …