Plant Biostimulants — Snake Oils or Beneficial Substances?

Tacy Callies Biostimulants

By Ute Albrecht and Sarah Strauss Recent years have seen an explosion of products termed “biostimulants” as alternatives to traditional chemical products to improve plant growth and productivity, and to enhance the sustainability of agricultural systems. Although there is currently no legal definition of biostimulants, they are usually defined as “substance(s) and/or microorganisms that when applied to plants or the …

oranges

Citrus Crop Forecast: Numbers Decline for Florida in All Categories

Daniel Cooper Crop Forecast

Mark Hudson of the U.S. Department of Agriculture delivered the November citrus crop forecast. For Florida, non-Valencia and Valencia oranges dropped 2 million boxes each, putting the all-orange forecast at 50 million boxes. This represents a 7 percent decline from the initial crop forecast in October. Florida all-grapefruit came in at 4.65 million boxes, down from 4.9 million boxes last …

rootstocks

Some Rootstocks Succumbed to Irma

Ernie Neff hurricane, Rootstocks

Researchers inspecting their groves at the Southwest Florida Research and Education Center after Hurricane Irma found that trees on certain rootstocks were very likely to be uprooted. Fernando Alferez, a horticulturist at the Immokalee center, discusses the uprooted trees and hopes he has for fresh citrus growing. “This is anecdotal evidence from our experience here,” Alferez says. “What we saw …

Progress on Engineering HLB-Tolerant/Resistant Citrus

Tacy Callies Varieties

By Manjul Dutt and Jude W. Grosser Huanglongbing (HLB) threatens the survival of the Florida citrus industry. Both conventional cultivars and genetically engineered cultivars that can grow in the presence of HLB have been developed at the University of Florida’s Citrus Research and Education Center (CREC) in Lake Alfred. Among the two citrus improvement techniques, engineering citrus remains the fastest …

hurricane

In Peace River, ‘No Giving Up’ After Hurricane

Ernie Neff Crop Forecast, hurricane

Peace River Valley Citrus Growers Association Executive Director Steve Smith reacts to the first U.S. Department of Agriculture (USDA) citrus crop forecast of the season and says growers are focused on recovering from Hurricane Irma. He says the forecast of 54 million boxes of Florida oranges “was a little higher than I anticipated, considering the extent of the damage across …

What Lies Ahead for Florida Citrus?

Tacy Callies Diseases, HLB Management, Pests, Varieties

Editor’s note: This article is part of the special coverage on the 100th Anniversary of the UF/IFAS Citrus Research and Education Center, found in the October 2017 issue of Citrus Industry magazine. By Tom Nordlie Although it’s difficult to predict future events, directors of the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) …

scott

FCM Says Irma Damage Threw Off USDA Citrus Crop Estimate

Daniel Cooper Citrus, Crop Forecast

Florida’s largest citrus grower organization said Thursday the U.S. Department of Agriculture’s (USDA) initial estimate of the 2017-2018 citrus crop is well above the crop predicted by the results of their grower damage survey. Florida Citrus Mutual believes the agency could not accurately account for the full extent of the catastrophic damage from Hurricane Irma. Historically, the USDA has a …

orange

Citrus Crop Forecast: Florida All Oranges at 54 Million Boxes

Daniel Cooper Citrus, Crop Forecast

The 2017-2018 Florida all-orange forecast released today by the U.S. Department of Agriculture (USDA) is 54 million boxes, 21 percent less than last season’s final production. Florida Agriculture Commissioner Adam Putnam and Florida Citrus Mutual both issued statements indicating they are concerned that the forecast did not accurately account for the full damage inflicted by Hurricane Irma. Listen to the …

A Look Back at 100 Years of Citrus Innovation

Tacy Callies History

By Beverly James, Alec Richman, Brad Buck, Samantha Grenrock and Tom Nordlie The year was 1917. In April, the United States entered World War I. Florida’s population was fast approaching 1 million, and agriculture was the state’s most important economic driver. Citrus cultivation, introduced to Florida 400 years earlier by Spanish explorers, had spawned an industry following the Civil War. …

$760 Million: Initial Estimate of Irma’s Florida Citrus Damage

Tacy Callies Citrus, hurricane

Florida Commissioner of Agriculture Adam H. Putnam announced on Oct. 4 that the preliminary agricultural damages caused by Hurricane Irma in Florida total more than $2.5 billion. In an initial report, the Florida Department of Agriculture and Consumer Services estimated losses for each segment of agriculture. The preliminary economic assessments account for current crop losses and ancillary losses, such as …

dorian

Hurricane Irma Damage Report from Gulf Citrus Growers

Tacy Callies Citrus

Ron Hamel, Gulf Citrus Growers Association executive vice president, says it has been difficult to reach area growers in the aftermath of Hurricane Irma due to the lack of power. At this point, he says, people are busy assessing the damage to the citrus crop and trying to get standing water out of groves. Hamel says Collier and Hendry county …

orange juice

What Is Happening to the Orange Juice Market?

Tacy Callies Economics

A historical perspective and current conditions are key to understanding what will happen to the orange juice market in the future if HLB-resistant trees are introduced. By Allen Morris Between 2001–02 and 2016–17, the Nielsen-measured retail U.S. orange juice market declined by 50 percent, Florida orange production declined by 70 percent and retail orange juice prices increased by 53 percent …

bactericides

Grower Jerkins Revises Stance on Bactericides

Ernie Neff Bactericides, HLB Management

At Citrus Expo in August, Premier Citrus President Tom Jerkins clarified comments about bactericides and their effectiveness that he made at the June Florida Citrus Mutual conference in Bonita Springs. “In Bonita Springs, I kind of stated publicly it was difficult for Premier to see a difference in the treated (with bactericides) versus untreated,” Jerkins says. “I said it was …

Harvesting Charges for Florida Citrus

Tacy Callies Economics

By Ariel Singerman, Marina Burani-Arouca, Stephen H. Futch and Robert Ranieri This article summarizes the charges for harvesting citrus in Florida during the 2016–17 season. The estimates provided are key for computing on-tree prices and to estimate economic returns to citrus growers. The estimates are based on a survey of harvesters conducted in May 2017. A total of 15 harvesters …

florida

Florida Citrus Acreage Tumbles 5 Percent

Ernie Neff Acreage

Florida lost another 25,148 acres of citrus in the past year, or 5 percent of the crop’s acreage, according to the annual Commercial Citrus Inventory released on August 31. The number of acres dropped to 454,973 from 480,121 in 2016. The inventory was released by the U.S. Department of Agriculture’s National Agricultural Statistics Service. “It turns out that our citrus …

More Juice to Come from Brazil

Tacy Callies Global Perspectives

By Marcos Fava Neves The first forecast of the 2017–18 Brazilian orange crop was published in May. Brazil expects a total of 364.47 million boxes, including the following: 68.49 million boxes of Hamlin, Westin and Rubi varieties 17.42 million boxes of Valencia Americana, Valencia Argentina, Seleta and Pineapple varieties 114.52 million boxes of the Pera Rio variety 123.04 million boxes …

Rootstocks and HLB Tolerance — Another Perspective

Tacy Callies HLB Management, Rootstocks

By Ute Albrecht Tolerance to a disease is generally defined as the ability to be productive in the presence of disease-causing organisms. This is contrary to resistance, which is defined as the ability to completely evade a pathogen due to specific resistance mechanisms. The question as to what defines an HLB-“tolerant” rootstock was posed in an article by Bill Castle, …

planting

High-Density Planting Increases Yields

Ernie Neff planting

Larry Black, general manager of Peace River Packing Company in Fort Meade, told growers at the recent Florida Citrus Mutual conference about his company’s success with high-density plantings. Black reported some four-year-old Valencia blocks are producing more than 300 boxes per acre. That’s double the current average Florida citrus yield of about 150 boxes per acre in the face of …

citrus crop forecast

Final U.S. Citrus Crop Forecast Down 17 Percent from Last Season

Daniel Cooper Citrus, Crop Forecast

Candi Erick, the agricultural statistics administrator with the Florida Department of Agriculture and Consumer Services’ Florida Agricultural Statistics Service, reports the final citrus crop forecast of the 2016-17 season. The United States all-orange forecast for the 2016-2017 season is down 2 percent from last month and down 17 percent from last season’s final utilization. The 2016-2017 Florida all-orange forecast released …