Foliar Fungal Disease Round-up for 2022

Josh McGillDiseases, Florida, Fruit Drop

By Megan Dewdney The 2021 foliar fungal season was an easier than average year. The La Niña weather pattern predicted last fall came to pass, and the spring was relatively dry from January to the end of May with some rain in February and April. While citrus trees in Florida were likely drought-stressed, the dry weather slowed the usual decomposition …

Weather

Freeze Damage Update for Florida Citrus

Josh McGillCitrus, Florida, Fruit Drop, Weather

Cold temperatures the mornings of Jan. 29 and Jan. 30 did more citrus damage than an initial report indicated, Highlands County Citrus Growers Association Executive Director Ray Royce said. Royce issued the following update on Feb. 1: “The coldest weather in at least four to five years has left much more damage behind in parts of the South-Central Florida region …

Top Priority: Updating Nutrient Recommendations

Josh McGillNutrition, Research

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is committed to updating nutrient management recommendations for citrus. For the next two months, that means seeking state funding for the research. The UF/IFAS team was crafting a specific proposal to the Legislature as of this writing. It’s at the very top of …

Water, Labor Boost Australia Crop

Ernie NeffInternational

Increased water availability and the expectation of more harvest labor, along with increased planting area, are reasons for the citrus crop forecast increase in Australia, according to the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS). FAS recently reported that the total planted area of navel and Valencia oranges in Australia has increased by 14% from 15,307 hectares (ha) in …

Lower Supply, Higher Demand and Processed Orange Prices

Josh McGillProcessing, Production

By Ariel Singerman According to the U.S. Department of Agriculture (USDA), production of processed oranges in Florida will decline again this season (Figure 1). If such a forecast materializes, production will have declined by approximately 80% since HLB was first found in the state. The Florida Department of Citrus reports that, as a consequence of COVID-19, orange juice demand has …

Florida Citrus Forecast Drops Again

Tacy CalliesCrop Forecast

The U.S. Department of Agriculture (USDA) National Agricultural Statistics Service released its monthly U.S. citrus production forecast on Jan. 12. ORANGESThe report showed another 3% drop in Florida orange production down to 44.5 million boxes. The initial forecast in October predicted 47 million boxes. The forecast for all oranges fell by 1.5 million boxes from the December report. Florida’s non-Valencia …

Florida Orange Brix Levels Not So Sweet Yet

Josh McGillOrange Juice, Processing

Florida citrus growers and orange juice processors are reporting low Brix levels as the 2021–2022 harvest season continues. The Jan. 10 edition of the Market News Bulletin from Florida Citrus Mutual noted average Brix of 9.83. According to Bob Behr, chief executive officer of Florida’s Natural Growers, juice oranges being harvested now are running below average. “Citrus greening continues to …

Egypt to Remain Top Orange Exporter

Josh McGillExport, International

Egypt is expected to maintain its position as the world’s leading fresh orange exporter in 2021–22 despite production challenges, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) reported. The country is expected to export 1.45 million metric tons (MMT), down from 1.67 MMT in 2020–21. The decrease in exports is attributed to lower production amid unfavorable climate conditions. Russia, …

Gibberellic Acid Application on Hamlin Appears Promising

Josh McGillResearch

By Tripti Vashisth In a multi-year field trial, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have seen beneficial effects of gibberellic acid (GA) on Valencia sweet oranges. Monthly application of GA (September to January) on Valencia improved yield on average by 30%, reduced fruit drop and elicited enhanced plant defense response. These benefits are possibly due …

Alico

Florida Growers Report Early-Season Obstacles

Josh McGillProduction

By Frank Giles The U.S. Department of Agriculture (USDA) reported a drop in estimated Florida orange production in its December crop update. That estimate lowered production by 1 million boxes from the initial forecast of 47 million boxes reported in October. In advance of USDA’s January estimate, Florida citrus growers discussed how their crops are progressing. Here’s what they had …

Gibberellic Acid Label Concerns Allayed

Ernie NeffAll In For Citrus Podcast, HLB Management

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have found that gibberellic acid (GA) applications can improve productivity of HLB-affected Valencia trees. But some growers are concerned that the GA label may not allow that use. Citrus Research and Education Center Director (CREC) Michael Rogers allays that concern. Rogers says some are concerned “because the recommendations that …

sweet orange scab

Sweet Orange Scab Quarantine Expanded

Ernie NeffDiseases

A quarantine for Elsinoë australis, the fungal causal agent of sweet orange scab (SOS), was established in all of Baldwin and Mobile counties in Alabama to prevent the spread of the disease. The quarantine was established by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) in cooperation with the Alabama Department of Agriculture and Industries (ADAI). …

citrus rootstock

Florida’s Top Rootstocks and Varieties

Ernie NeffRootstocks, Varieties

US-942 remained the top citrus rootstock in Florida for the third year in a row, and Valencia SPB-1-14-19 was the top variety. ROOTSTOCKSMore than 1.28 million nursery trees were budded on US-942, according to the Florida Department of Agriculture and Consumer Services’ (FDACS) Citrus Budwood Annual Report for 2020-21. The next 14 most popular rootstocks, with the number of buddings, …

florida orange

Ups and Downs in Florida Citrus Forecast

Daniel CooperCrop Forecast

On Dec. 9, the U.S. Department of Agriculture’s (USDA) National Agricultural Statistics Service reported the Florida orange forecast at 46 million boxes. Total orange production is down 2% from the October forecast but down 13% from last season’s final utilization. The decrease is in Florida non-Valencia production, which now stands at 18 million boxes. Current droppage is above average and …

boron deficiency

Pummelo Interstocks Could Improve Performance of HLB Trees

Tacy CalliesResearch

By Manjul Dutt, Ethan Nielsen, Lamiaa Mahmoud, Maria Quirico and Jude Grosser All commercially cultivated citrus scion varieties are grafted onto rootstocks before being planted in the field. The rootstocks are selected based on specific desirable qualities (abiotic/biotic stress resistance) and the ability to produce a good crop in a specific location. The ideal rootstock confers disease resistance, hardiness, tolerance …

Sneak Peek: December 2021 Citrus Industry

Tacy CalliesSneak Peek

Everyone seems to get busier during December as the holidays near. With the harvest season in full swing, this is especially true in the Florida citrus industry. Amidst the rush to complete holiday preparations and tend to never-ending grove tasks, it’s a good idea to pause for a moment to consider farm safety issues. The December issue of Citrus Industry …

Which Rootstock to Select

Tacy CalliesRootstocks, Tip of the Week

Valencia trees on high-vigor (left) and low-vigor (right) inducing rootstocks in a Central Ridge field trial. Note the higher yield efficiency of the smaller trees on the right and the leaning of these trees due to Hurricane Irma. By Ute Albrecht Rootstock selection is critical for longevity and productivity of a grove. The decision should be based on compatibility with …

ACP Management With UV-Reflective Mulch and Flush-Timed Sprays

Tacy CalliesHLB Management

By Jawwad Qureshi, Lauren Diepenbrock and Davie Kadyampakeni The future of the Florida citrus industry depends on successfully replacing the present bearing tree inventory with new plantings and transitioning them into crop production. This would be a relatively routine process were it not for the ubiquitous presence of huanglongbing (HLB) and its vector, Asian citrus psyllid (ACP). Early infection can …

Early Performance of Orange Rootstocks in Commercial Settings

Tacy CalliesEconomics, Rootstocks

By Ariel Singerman, Stephen H. Futch and Brandon Page This article provides estimates on the performance of different rootstocks grafted with Valencia sweet orange scions in commercial field conditions. These are the first estimates obtained from side-by-side trials that compare the performance of rootstocks developed by two breeding programs: The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) …

Citrus World Reports Increased Returns

Ernie NeffIndustry News Release

Citrus World, Inc. (CWI) reported its top pool for early- and mid-season oranges paid a combined $2.41 per pound solid (PPS) last season. The same combined pool for Valencia oranges paid $2.61 PPS. Grapefruit returned an average of $2.30 PPS. The results were announced at CWI’s annual stockholders’ meeting on Nov. 8. Chief Operating Officer Chris Groom discussed sales performance …