Cosmic Crisp Claimed as the Most Promising "Celebrity Apple"

Exciting research from Pace International's record-breaking Postharvest Academy

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Pace International, a leader in sustainable postharvest solutions, recently hosted its half-day Postharvest Academy in Cle Elum, WA, at the Suncadia Lodge. Every spring, Pace's academy explores game-changing ideas and presents some of the latest research being conducted in the postharvest segment for the apple, pear and cherry industries, with this year’s event including two quality-related pre-harvest presentations.

"We bring in the experts whose cutting-edge research addresses our customers' most pressing packinghouse challenges, with a focus on maintaining fruit quality, freshness and safety," said Rodrigo Cifuentes, vice president of marketing and business development for Pace International.

Pace International’s lineup of speakers this year included seven industry experts presenting on a wide range of topics from market expectations, presented by Desmond O’Rourke of Belrose Inc. to managing fruit disorders with decay control, covered by James Mattheis of the U.S. Department of Agriculture and Richard Kim of Pace International. Food safety management was also presented, with a focus on efficacy of water sanitizers and Peroxyacetic acid in apple packing processes, presented by Meijun Zhu of WSU, and a proactive defense strategy by Trevor Suslow of University of California-Davis, who are both researchers on the food-safety project, “Assessment of Apple Packing for Listeria Risk” funded by the Center for Produce Safety, which the WTFRC is a partner in research with. A few academy highlights included the following:

  • Cosmic Crisp was claimed recently to be the most promising “celebrity apple” of the future by The New York Times and Seattle Business magazine. According to Ines Hanrahan, project manager for the Washington Tree Fruit Commission, the Cosmic Crisp is a new apple variety bred by WSU. During Hanrahan's presentation, she reviewed the current status of the development of a starch scale for growers, to help determine the perfect harvest time for the Cosmic Crisp, which has slow starch degradation, a narrow fruit maturity profile on the tree, and a long harvest window. This scale, along with other fruit quality parameters, will help to ensure high-quality fruit being picked every time, and it allows packers to make corrections during harvest. She also shared the latest harvest and storage practices for the Cosmic Crisp apple variety.
  • The new application process for ecoFOG (fungicide thermofogging technology) and FYSIUM (1-MCP technology) reduces application times and provides significant benefits to packers, including better apple quality management. David Felicetti Sr. R&D and regulatory affairs manager of Pace International, presented very promising results demonstrating FYSIUM exposure times less than the current 24-hour recommendation can be just as effective. Felicetti also discussed applying ecoFOG before FYSIUM. "Traditionally, FYSIUM is applied first followed then by the ecoFOG application. However, by inverting the applications, all actives can be applied in a shorter window,” Felicetti said. The benefits of reducing application times are significant for packers and include reduced pathogen incubation time due to the earlier application of fungicides, reduced CO2 build-up in the rooms, and increased flexibility to meet packer's individual needs. These trials are still ongoing.
  • Valent shows results of new ReTain organic formulation to help manage organic apple harvests. Kevin Forney, product development manager for Valent USA LLC, spoke on the evaluation of ReTain as a maturity management tool on new apple varieties and field evaluations of a new organic formulation of AVG. With the maturity management tool, ReTain treatments resulted in highly significant reductions in fruit drop across all varieties tested, with no observable effects on the development or intensity of skin color. "ReTain, and the new organic formulation have consistently demonstrated equal performance around all varieties tested," Forney said.

Pace International’s eighth annual Postharvest Academy attracted a record-breaking attendance of over 150 industry leaders and professionals from various countries around the world, including the U.S., Canada, Chile and France.

"Our next scheduled Postharvest Academy will be in October 2018 in Chile. We hosted our first Postharvest Academy in Chile last year and had over 100 attendees. We plan to continue hosting Pace’s Academy into markets where we have a presence. Our goal is to share the latest trends, practical research and sustainable postharvest technologies with all of our customers," said Cifuentes.

Article by The Produce News

Learning Cosmic Lessons

Researchers offer the latest horticultural, packing tips for new Washington State University apple variety.

Photo by TJ Mullinax,  Good Fruit Grower .

Photo by TJ Mullinax, Good Fruit Grower.

The new Washington State University apple variety WA 38, to be sold under the trade name Cosmic Crisp, is easy to store and suffers very few storage maladies if growers pay attention to best practices in the field.

That’s the finding from researchers who are reviewing the variety and offering tips to growers who planted it for the first time earlier this year.

“That’s a big difference from other varieties, not having to worry about 40 percent losses in storage due to some disease or another,” said Ines Hanrahan, project manager for the Washington Tree Fruit Research Commission (WTFRC). “You still have to manage the growing of the fruit and the harvest, but once you have a good product in the bin, there’s less worry having something wrong once it’s in storage.”

A cross between Enterprise and Honeycrisp bred at WSU, the apple was released only after years of orchard trials.

Washington growers began planting the first trees in the spring, and roughly 11 million trees are expected to be in the ground in just three short years.

Knowing what the variety needs in the orchard and packing house is crucial to success.

Researchers for the WTFRC and WSU have been evaluating fruit from the trees to better understand and recommend best horticultural and packing practices for Cosmic Crisp.

They presented examples of the fruit — perfect-looking Cosmic Crisp apples and apples shaped less than ideally, as well as fruit with various blemishes — during a field day in September.

Here are a few of their recommendations:

Photo by Shannon Dininny,  Good Fruit Grower.

Photo by Shannon Dininny, Good Fruit Grower.

—Typically, growers will have a two-week window to harvest fruit that is suitable for long-term storage. Most varieties offer only a five-day window. “It gives you some time, some play, during harvest, if for example you don’t have enough pickers,” Hanrahan said.

—The variety is a lot less prone to sunburn than many other varieties, but can still get sunburn in afternoon sunlight without overhead cooling. Also, overhead cooling doesn’t appear to impede the fruit from coloring.

“However, if you have a block that is overly vigorous and has no overhead cooling, you can have color problems just like other varieties,” she said. Usually, color sets three to four weeks before harvest.

—Growers need to monitor starch levels and watch for splits, which mainly affect overripe fruit. Typically, only 2 percent of fruit will split, but if growers wait too long and the starch level goes to four (on a one-to-six scale), splits can go up to 20 percent.

“Start looking for splits at starch level two, then just keep watching to know if your orchard is susceptible,” she said. Researchers are working to come up with a starch scale for the variety by the end of the year.

Photo by Shannon Dininny,  Good Fruit Grower.

Photo by Shannon Dininny, Good Fruit Grower.

—Firmness ranges between 18 and 21 pounds in normal years. This year, researchers have harvested fruit at 17 pounds. However, the fruit loses very little firmness in storage.

—A few other notes: The variety suffers from no internal browning or scald. There is some green spot and cracking, but researchers don’t think the latter is a concern unless growers miss their harvest window and harvest too late, Hanrahan said.

Researchers have begun a couple of new projects to continue evaluating the variety. They are working to develop recommendations on either preharvest fungicide applications or applications as soon as the fruit is picked and placed into storage.

The variety has a lot of sugar and there are some stem punctures, so to avoid losses in storage, they are recommending fungicide applications.

They also are trying to use dynamic controlled atmosphere storage (DCA) to see if the fruit can be stored under organic storage regimens and determining when stem punctures might occur — during picking, placing of fruit in the bin or running fruit over the packing line. Researchers are conducting a full test this year to help to advise growers on whether to stem clip.

Article by Shannon Dininny, Good Fruit Grower