Costa Rica Orange Crop to Rise

Josh McGillCrop Forecast, International

Orange production in Costa Rica is forecast to increase almost 2% in 2022–2023, to 305,000 metric tons (MT), according to the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA FAS). Denser plantings on larger farms have driven up yields, and HLB management programs mitigate the worst impacts of the virus. HLB was first identified in Costa Rica in 2011. Harvest …

Trunk Injection Not a Silver Bullet for HLB

Josh McGillDiseases, HLB Management

Although trunk injection of oxytetracycline hydrochloride  (OTC-HCl) has received much recent press for its promise in managing HLB, there is still no silver bullet for the devastating disease. That was part of plant pathologist Ozgur Batuman’s message at a Dec. 10 seminar addressing HLB and other citrus diseases that may exacerbate HLB’s effects on trees. “There is no single effective …

Taking Fertilizer Knowledge to the Next Level

Josh McGillEducation, Nutrition

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has launched a new online graduate certificate program for agricultural professionals. “The certificate program is called Fertilizer Science and Technology, offered completely online at the student’s pace and oriented to growers, consultants, suppliers and regulators,” says Kelly Morgan, UF/IFAS professor of soil fertility and water management. The certificate is …

Morocco Mandarin Production to Tumble

Josh McGillCrop Forecast, International, Mandarins

Morocco’s tangerine and mandarin production for marketing year 2022–23 is expected to fall to 900,000 metric tons (MT), a 34% decline from the previous season’s 1.36 million metric tons. The forecast by the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA FAS) blames the decline on heat stress, water scarcity and increased input costs. Many orchards in the Berkane region …

Cover Crop Considerations for Citrus

Josh McGillCover Crops

By Amir Rezazadeh Cover crops protect the soil from sunlight, wind and heavy rain, which enhances soil microbial populations and improves soil structure, water infiltration and root penetration. A reduction in soil crusting, erosion, runoff and nutrient leaching are additional advantages. Through improved nitrogen cycling and nutrient retention, cover crops increase soil fertility. ORGANIC MATTER SOURCECover crops offer an inexpensive …

Two New Florida Citrus Hall of Fame Members

Josh McGillAwards

The late F. Gilbert Bowen of Winter Haven and the late A.G. Smith of Wauchula will join the Florida Citrus Hall of Fame as the Class of 2023 inductees. They will be inducted posthumously in March 2024, along with the Class of 2024 inductees.  BOWENFor more than seven decades, Bowen (1928–2022) was a leader in his family’s operations as well …

Preparing for Freezing Temperatures

Josh McGillAll In For Citrus Podcast, freeze

With temperatures plummeting over Christmas weekend, the latest episode of the All In For Citrus podcast is well timed. Chris Oswalt, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus Extension agent covering Polk and Hillsborough counties, joined the podcast to discuss tips on preparing for freeze events. Oswalt encouraged growers to find a reliable source of …

freeze

Cold-Hardy Growers Face Tough Call With Possible Freeze

Josh McGillCold Hardy, freeze

Looming below-freezing temperatures in the cold-hardy citrus region have growers on high alert regarding their remaining crop. Forecasts call for temperatures to drop to the 20s in Tifton, Georgia, on Dec. 23, according to Weather.com. Growers will have to decide on how to handle their remaining fruit, said Kim Jones, citrus producer and packinghouse owner. Jones is president of the …

CUPS Can Be More Profitable Than Conventional Production

Josh McGillCUPS, Economics, Research

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 …

Open House Showcases Research Center’s Work

Josh McGillEvents, Research

The Southwest Florida Research and Education Center (SWFREC) in Immokalee recently hosted its annual open house. The event had a great turnout of local growers and residents from nearby communities. Several school groups also attended, so students could learn more about farming in Southwest Florida and the research being conducted at the center. Originally established in 1958, SWFREC was dedicated …

The Essential Elements of Reset Management

Josh McGillplanting, Tip of the Week

By Mongi Zekri For maximum efficiency of a grove, it is essential that every location is occupied by a tree and that every tree is healthy. Prompt replacement of dead and declining trees means higher average long-term returns from the grove. If the declining trees remain in the grove, they keep getting weaker and yield less fruit each year. Therefore, …

Groundcovers Promote Water-Use Efficiency and Pest Management

Josh McGillIrrigation, Pests

By Sandra M. Guzmán, Larry Duncan, John Santiago and Lorenzo Rossi The implementation of pest management technologies might have an impact on other management areas in the grove. Landscape fabric groundcovers, for example, have been used for pest management in citrus production. Groundcovers also recently have been used to promote the homogeneous availability of water for uptake by roots, better …

Evolution of Sting Nematode Integrated Pest Management

Josh McGillPests, Research

By Homan Regmi, Larry Duncan and Johan Desaeger Two field trials were initiated in a Polk County, Florida, commercial grove of 15-month-old Valencia on Kuharske trees in 2019 to measure the effectiveness of integrated pest management (IPM) tactics for managing sting nematodes (Belonolaimus longicaudatus). Six chemical nematicides, many newly released, were compared in one trial. In the second, perennial peanut …

Sneak Peek: November 2022 Citrus Industry

Josh McGillhurricane, Sneak Peek, Technology

While irrigation and technology were meant to be the focus of the November issue of Citrus Industry, the aftermath of Hurricane Ian, combined with the low initial crop forecast that does not even account for the storm’s damage, proved to be the much bigger story. Editor-in-Chief Frank Giles provides early details on the hurricane’s damage to Florida’s citrus industry and …

Phytophthora Treatments for Hurricane-Damaged Groves

Josh McGillDiseases, hurricane, Tip of the Week

By Megan Dewdney A priority for the Florida citrus industry is evaluating groves for damage and determining the best course of action going forward after the destruction of Hurricane Ian. One of the many considerations is the effect of flooding on root health, particularly if standing water has remained longer than 72 hours. The main diseases are phytophthora foot, crown …

Preliminary Assessment of Hurricane Ian Citrus Loss

Josh McGillEconomics, hurricane

Florida citrus likely suffered production losses ranging from $147 million to $304 million due to Hurricane Ian, according to the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The preliminary assessment was issued Oct. 17 by the UF/IFAS Food and Resource Economics Department. “This estimate only accounts for production losses, or changes in expected revenues for the current …

Factors Affecting Nutrient Concentration of Citrus Leaves

Josh McGillNutrition

By Chris Oswalt Growers may have compelling reasons to collect and analyze citrus leaf samples at different times of the year. Current tables allow growers to interpret the results of their citrus leaf analysis based on the collection and analysis of 4- to 6-month-old leaves from non-fruiting twigs (Figure 1). This begs the question of the potential consequences of interpreting …

Two Ways to Treat Ian-Stressed Trees

Josh McGillhurricane, Irrigation, Tip of the Week

Give trees a bit of relief with frequent irrigation and kaolin particle film. By Christopher Vincent Hurricane Ian caused damage to orange trees, knocking fruit on the ground, twisting and breaking limbs, stripping leaves off trees and flooding soil. Although lots of damage was visible immediately, the after-effects will continue to rear their ugly heads in the months to come, …

Maximizing the Use of Soil Moisture Sensors

Josh McGillIrrigation

By Davie Kadyampakeni, Ajia Paolillo and Sandra Guzmán Citrus trees require water to be able to carry out the natural processes of growth, making food, and developing fruit and juice. To get the water from the soil, the fibrous roots do the extraneous work of absorbing the water and carrying it via the transpiration stream (or the water highway) to …

Citrus Crop Estimate Luncheon Pivots to Ian Recovery Resources

Josh McGillCrop Forecast, hurricane

Florida Citrus Mutual’s crop estimate luncheon on Oct. 12 included the live announcement of the citrus crop forecast. But the focus of the event was on resources growers can tap into for assistance after Hurricane Ian. Speakers from various agencies shared information that can aid grower recovery efforts. “After the storm, we knew whatever number (for the citrus crop estimate) …