Prevent and Recover From Hurricane Damage

Josh McGillhurricane, Tip of the Week

By Christopher Vincent, Tripti Vashisth and Gillian Zeng Michalczyk Hurricane Ian harmed citrus trees in much of Florida, especially in areas where sweet oranges are grown. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are tracking the health of trees in groves around the state as they struggle to recover. Fall applications of gibberellic acid before the storm …

Traditions Live on at New Location

Josh McGillCitrus Expo

Although the Citrus & Specialty Crop Expo was held at a new location this year, the event’s traditions were alive and well. A large crowd of growers and industry members gathered for two days of education and networking at the Florida State Fairgrounds in Tampa on Aug. 16–17. The event kicked off with the traditional biscuits and gravy breakfast at …

Historically Low Orange Juice Supply

Josh McGillBrazil, Orange Juice

Brazil’s São Paulo and Minas Gerais citrus belt has gone through four low orange production cycles in a row, the Brazilian Association of Citrus Exporters (CitrusBR) pointed out in a recent report on orange juice processing. The association noted that orange production in Brazil’s citrus belt totaled 269 million boxes in the 2020–21 season, 263 million boxes in 2021–22, 314 …

Tau Fruit Fly Quarantine Expanded

Josh McGillCalifornia Corner, Pests, Regulation

Federal and state agriculture agencies on Aug. 15 expanded the Zeugodacus tau fruit fly quarantine in the Stevenson Ranch area of Los Angeles County, California. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) and the California Department of Food and Agriculture (CDFA). The expansion was in response to the confirmed …

streptomycin

FFVA Endorses Aldicarb Registration

Josh McGillFlorida, Pesticides

The Florida Fruit & Vegetable Association (FFVA) submitted comments to the U.S. Environmental Protection Agency (EPA) in support of the proposed federal registration of aldicarb on Florida oranges and grapefruit. “Prior to the business-strategy decision by the previous registrant to voluntarily remove aldicarb from the market in 2010, this insecticide was considered a cornerstone of immediate and long-term sustainable production …

Diaprepes root wevil

Diaprepes Root Weevil Update for Florida

Josh McGillPests

Florida’s populations of Diaprepes abbreviatus root weevil have been uncharacteristically low so far in 2023, entomologist Lauren Diepenbrock reported recently. The adult pests are normally active in April–May and in the fall, the University of Florida Institute of Food and Agricultural Sciences assistant professor noted. Prior to the discovery of HLB disease in Florida in 2005, growers who had extensive …

study

Replacing Psyllid Host Plants

Josh McGillBrazil, HLB Management, Psyllids

The secretary of agriculture and supply of the state of São Paulo, Brazil, in partnership with Fundecitrus, has launched a campaign to replace plants that are hosts for the HLB-spreading psyllid. HLB disease is also known as citrus greening. The campaign, called Plant This Idea, aims to replace citrus and myrtle plants with fruitful and ornamental plants in rural backyards …

Reasons for Less Argentine Lemon Production

Josh McGillCrop Forecast, International, lemons

Fresh lemon production in Argentina in 2022–23 is forecast to decline to 1.65 million metric tons (MMT), down from 2.1 MMT the prior year, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) reported recently. The decline is due to the impact of rising costs, which have prompted smaller producers to limit the maintenance needed on lemon-bearing trees and …

Soil Moisture Sensors Improve Irrigation

Josh McGillIrrigation, Technology, Tip of the Week

By Davie Kadyampakeni, Sandra M. Guzmán and Ajia Paolillo Using soil moisture sensors for irrigation scheduling can reduce water stress in citrus trees. Sensors that are easy to calibrate and maintain, specifically designed for managing irrigation and fertigation on Florida’s sandy soils, are the preferred choice. These tools enable growers to use their water resources wisely and efficiently. There are …

vote

Florida Growers Vote to Amend Federal Marketing Order

Josh McGillFlorida, Marketing, Regulation

Florida citrus producers voted to amend the federal marketing order regulating the handling of oranges, grapefruit, tangerines and pummelos grown in Florida, the U.S. Department of Agriculture (USDA) announced on Aug. 29. In a referendum held April 1–May1, all amendments met the requirement of being favored by two-thirds of the producers voting or by two-thirds of the volume represented. The …

WOTUS Rule Amended to Conform With Supreme Court Decision

Josh McGillWater

This week, the U.S. Environmental Protection Agency (EPA) and the U.S. Department of the Army (the agencies) announced a final rule amending the 2023 definition of waters of the United States (WOTUS) to conform with the recent Supreme Court decision in Sackett v. EPA. The agencies are committed to following the law and implementing the Clean Water Act to deliver the essential …

Texas Growers Rebounding From 2021 Freeze

Josh McGillfreeze, Texas

Texas growers appear to be back on track after Winter Storm Uri caused significant setbacks to many groves in February 2021, according to a Texas A&M AgriLife Extension Service expert. ACREAGE STATUSDespite citrus production losses to the storm, Juan Anciso, AgriLife Extension horticulturist at Weslaco, said he was pleasantly surprised that the industry was faring much better than he expected. …

Student’s Thiamethoxam Research Honored

Josh McGillAwards, Brazil, HLB Management

Work on HLB carried out at Fundecitrus by student Leandro Jun Soki Shibutani was honored at the recent Brazilian Congress of Phytopathology. The first part of Shibutani’s dissertation on the theme “Frequency of spraying thiamethoxam and transmission of Candidatus Liberibacter asiaticus in orange trees under constant arrival of infective psyllids” took second place in the Best Master’s Works category. It …

HLB Treatment Approved in Florida

Josh McGillHLB Management, Industry News Release

Invaio Sciences in late August announced that its Trecise technology to deliver ArborBiotic for the suppression of HLB in oranges received approval from the Florida Department of Agriculture and Consumer Services. The approval came under section 24(c) of the Federal Insecticide, Fungicide and Rodenticide Act.    Invaio stated that the product’s closed-system design does not require drilling. Unlike conventional injection treatments, …

PIECES OF THE PAST: The Power of Pictures

Josh McGillMiss Florida Citrus, Pieces of the Past

By Brenda Eubanks Burnette This year, John Fuller, the new global marketing manager for the Florida Department of Citrus (FDOC), and Matt Joyner, executive vice president/chief executive officer of Florida Citrus Mutual, served on the panel of judges for the Miss Florida Citrus/Miss Winter Haven Competition. It was interesting to introduce them both to this iconic, grassroots promotional program that …

What To Do When Groves Flood

Josh McGillhurricane, Weather

By Mongi Zekri During heavy rains in the summer, excess water must be removed from the root zone. Flooding injury can be expected if the root zone is saturated for three days or more during extended summer rains at relatively high soil temperatures (86 to 95 degrees). Flooding during the cooler December–March period can be tolerated for several weeks at …

Peru

Global Mandarin Production Declining

Josh McGillCrop Forecast, International, Mandarins

Global production of tangerines/mandarins for 2022–23 is estimated by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) to be 36.9 million metric tons (MMT), down 900,000 metric tons (MT) from the prior year. China production, which accounts for almost 72% of global tangerine/mandarin production, is estimated to be down 2% to 26.5 MMT due to lower yields. European …

Agrobacteria Shows Promise Against HLB

Josh McGillHLB Management, Research

U.S. Department of Agriculture Agricultural Research Service (USDA ARS) scientists have discovered a way to augment a citrus tree’s natural resistance to pathogens, including HLB. The scientists are in the Crop Improvement and Genetics Research (CIGR) unit in Albany, California. According to James Thomson, a geneticist at CIGR, by incorporating receptors that can recognize pathogens, scientists are able to activate …

Brown Rot Could Be on the Horizon for Florida

Josh McGillDiseases, Tip of the Week

By Megan Dewdney It is summer in Florida, and the early fruit are maturing. This is always a risky time for brown rot in early sweet oranges and grapefruit cultivars. The summer rains have been happening, but they have been intermittent depending on location. This means that phytophthora propagule counts may vary depending on how much rain has occurred in …

Growers Get Update on Federal Relief Programs at Expo

Josh McGillCitrus Expo, Legislative

Matt Joyner, executive vice president and chief executive officer of Florida Citrus Mutual (FCM), reported that a group of Florida citrus growers spoke to U.S. Department of Agriculture (USDA) Farm Service Agency representatives about federal relief programs at the recent Citrus & Specialty Crop Expo. The Expo was held this year at the Florida State Fairgrounds in Tampa. “This year’s …