Oriental fruit fly

Oriental Fruit Fly Quarantine in Los Angeles County

Josh McGillCalifornia Corner, Pests

A portion of Los Angeles County has been placed under quarantine for the Oriental fruit fly following the detection of 14 flies in the North Hills area of the San Fernando Valley. The quarantine zone measures 89 square miles. It is bordered on the north by the Angeles National Forest, on the south by the Ventura Freeway, on the west …

California Growers Show Strong Support for Citrus Research Board

Josh McGillCalifornia Corner, Research

California citrus growers recently voted by a large margin to continue their support of the Citrus Research Board (CRB) in a state-mandated referendum. The recently concluded referendum, which must be held every five years, was conducted by the California Department of Food and Agriculture (CDFA). A majority of eligible citrus producers voted in the referendum. Their support was nearly unanimous …

citrus

All In For Citrus Podcast, July 2022

Josh McGillAll In For Citrus Podcast, Citrus Expo

This month’s All In For Citrus podcast focuses on the upcoming Citrus & Specialty Crop Expo scheduled for Aug. 17–18 at the Lee Civic Center in North Fort Myers, Florida. Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, said the university’s citrus research team worked hard to develop …

Medfly

California Fruit Fly Quarantines Removed

Josh McGillCalifornia Corner, Pests, Regulation

Federal and state officials in late June removed Mediterranean fruit fly (Medfly) and Oriental fruit fly quarantines in California. The actions were taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA). MEDFLY The Medfly quarantine was removed in the Upland area of San Bernardino and Los …

Chinese Rootstocks Show Promise in Australia

Josh McGillInternational, Research, Rootstocks

Preliminary data from an Australian research project suggest Chinese rootstocks No. 24 and 85-24 are having a dwarfing effect on citrus tree growth and will be candidates for future high-density cropping systems. Citrus Australia reported that those rootstocks have strong potential in heavy soils, and that results on deep sandy loam soil are also very encouraging. Tahir Khurshid from the …

Managing Macronutrients and Micronutrients

Josh McGillNutrition, Tip of the Week

By Davie Kadyampakeni Nutrients are needed for optimal citrus tree growth, fruit yields and juice quality. Any nutrient deficiencies could result in low yields and decreased revenue. Make sure citrus trees receive adequate macronutrients and micronutrients at all times. Macronutrients are those nutrients needed in large quantities to influence yield, growth and fruit quality. Macronutrients are further divided into two …

lemon/lime

South African Lemons and Limes to Reach Record Production

Tacy CalliesCrop Forecast, lemons, Limes

Production of lemons and limes in South Africa will grow by 7% to a historic high of 670,000 metric tons (MT) in 2021–22, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) recently estimated. In 2020–21, South Africa produced 626,791 MT of the fruit. PLANTED AREAThe area planted with lemons and limes grew more than threefold over the past 10 …

Progress in Developing Improved Citrus Rootstocks to Mitigate HLB

Josh McGillHLB Management, Research, Rootstocks

By Jude Grosser, Manjul Dutt and Fred Gmitter Exploiting citrus genetic diversity is the key to defeating HLB. Plant species have survived for millennia with evolving, hostile pathogens. This is possible through natural selection within genetically diverse populations. Tolerant or resistant individuals survive and intermate, get through the bottleneck, and the species evolves. Current citriculture is based on extremely limited …

New Water School to Open at Florida Gulf Coast University

Tacy CalliesEducation, Water

Florida’s seashores, lakes, rivers and springs make it a unique spot in the world. In Southwest Florida, water is an area of intense focus in recent years as various sectors work to protect the resource. Florida Gulf Coast University, in Fort Myers, has established The Water School, recognizing the critical role water plays in the region. A new 114,000-square-foot teaching …

FFAA Conference Takes Up Nutrient and Water-Quality Issues

Tacy CalliesBMPs, Events, Water

Florida Fertilizer & Agrichemical Association members gathered in Palm Beach recently for the organization’s annual conference. The status of nutrient regulations and water-quality issues were at the top of the agenda for the group. Ernie Barnett, Florida Land Council president, addressed those issues during the conference. He has been involved with water issues in the state for more than 30 …

HLB-Tolerant Tree Program Progressing

Tacy CalliesFlorida Citrus Commission, Florida Department of Citrus, HLB Management

The goal of an expedited tree propagation program is to have several million HLB-tolerant or HLB-resistant trees planted in the next several years. Greg Hodges, assistant director of the Florida Department of Agriculture’s Division of Plant Industry (DPI), said he believes that goal is attainable. Hodges and others presented the propagation plans to the Florida Citrus Commission (FCC) on July …

Grapefruit in Turkey: Production Up, Acreage Down

Josh McGillCrop Forecast, Grapefruit, International

Turkey is forecast to produce 249,000 metric tons (MT) of grapefruit in 2021–22, up 5% over the prior year, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) reported. The increased production is due to better yields resulting from favorable weather conditions in the Mediterranean growing region, USDA/FAS stated in its semi-annual report on Turkish citrus. Improved yields have allowed …

No Negative Cardiovascular Impacts for Children Drinking OJ

Josh McGillFlorida Department of Citrus, Orange Juice, Research

New research examining the cardiovascular health of young adults who consumed 100% orange juice (OJ) as children indicates no increased risk for high blood pressure or elevated blood lipid levels as a result. The research, published in the International Journal of Food Science and Nutrition, specifically looked at 100% OJ consumption during late childhood and early adolescence and its association …

Morocco Citrus Exports to United States Set Record

Josh McGillExport, International

Morocco in 2021–22 shipped a record 110.5 million metric tons (MMT) of fresh citrus to the United States, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) reported recently. That’s an increase of 156% over prior year shipments to the United States. Fresh tangerine and mandarin shipments to the United States increased 142% over the prior year, to 103.2 MMT. …

Seminar Schedule Announced for Citrus & Specialty Crop Expo

Tacy CalliesCitrus Expo, Education

Growers and industry leaders should mark their calendars for this year’s Citrus & Specialty Crop Expo scheduled for Aug. 17–18 at the Lee Civic Center in North Fort Myers, Florida. Complimentary registration is available for all growers, packers, shippers, processors, association members and university researchers. Josh McGill, show director, discusses why industry members should attend this year’s event. “We’re really …

CRDF

Final U.S. Citrus Forecast Has Several Changes

Tacy CalliesCrop Forecast

The final U.S. citrus forecast of the 2021–22 season, released July 12, projected production changes for crops in Florida, California, Texas and Arizona compared to the June forecast. FLORIDAFlorida’s all-orange forecast rose 1%, to 40.95 million boxes, due to a slight increase in non-Valencia orange production and a 1% increase in expected Valencia orange production. The Florida grapefruit production forecast …

Argentina: Orange and Tangerine Crops to Increase

Josh McGillCrop Forecast, International

In Argentina, fresh orange production is forecast to increase to 920,000 metric tons (MT) in 2021–22, up 120,000 MT from previous estimates. Fresh tangerine production is estimated to increase to 400,000 MT. The projections were in a semi-annual report on Argentina’s citrus industry from the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS). PLANTED AREAOranges and tangerines are grown in …

Wildflowers May Benefit Citrus Groves

Josh McGillPests, Research, Tip of the Week

By Xavier Martini Planting wildflowers in and around fields is known to provide food resources and habitats for beneficial arthropods like pollinators and predators of pests. In two locations (Lake Alfred and Monticello), University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers tested whether planting native Florida wildflowers next to citrus grove windbreaks could improve natural pest control …

Evaluation of Citrus × Microcitrus Hybrid Scions

Josh McGillResearch, Varieties

By Ute Albrecht, Anas Fadli and Chandrika Ramadugu Most commercially available citrus scion cultivars are highly attractive to the Asian citrus psyllid and susceptible to HLB. There are some citrus species, however, that are HLB tolerant or resistant. This may be because they are less attractive to the psyllids and/or because they restrict pathogen proliferation and therefore HLB disease development. …