ASHS Press Releases

Entries from June 2008

What a Peach!

June 30, 2008 · Comments Off

New high-yield peach introduced

DAVIS, CA – Summer is peach season, and soon consumers will be flocking to roadside stands and farmers markets to purchase these fresh, juicy, candy-sweet fruits for cobblers or simply enjoying right out of hand. 

Almost all of the fresh peaches available to consumers are freestone, named because the fruit separates easily from the stone, or pit. Clingstone, or “cling” peaches attach, or “cling” more to the pit. Because they retain their flavor and quality through processing, clingstone peaches are the type most often used for commercial canning.

To address the need for high-yield, improved-quality peaches for use by commercial fruit canners, University of California at Davis Professor Thomas Gradziel and his colleagues in the Department of Plant Sciences and Department of Food Science have introduced a new cultivar of clingstone peach called ‘Lilleland’.

In an article published in the April 2008 issue of HortScience, Gradziel notes: “Since its introduction in 1921, Halford’ has become one of the most extensively planted processing peach cultivars in California. However, high temperatures during fruit development often promote a red anthocyanin staining of the fruit pit cavity and an increase in pit fragments that remain in the fruit after processing. The red anthocyanins turn brown when heat-processed, staining both the processed fruit and syrup. Both stained and fragment-containing fruit need to be sorted out, which can greatly reduce final processed fruit case yields.” According to Gradziel, ‘Lilleland’ was developed as a replacement for ‘Halford’.

Gradziel noted that ‘Lilleland’ is characterized by a small pit, no undesirable fruit pit staining, and reduced incidence of pit fragments in the processed fruit, adding; “In long-term commercial evaluations, ‘Lilleland’ peaches have demonstrated good firmness, color, shape, and productivity.” The patented peach was named in honor of the late Professor Ormund Lilleland of UC Davis, who was responsible for many of the initial plant nutrient studies for processing peaches.

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The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.ashspublications.org/cgi/content/abstract/43/2/542

Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education, and application. More information at ashs.org.


This press release also available on EurekAlert!

Original Article:

‘Lilleland’ Peach: A High Case-yield Processing Clingstone Peach for the ‘Halford’ Maturity Period
Thomas M. Gradziel, Mary Ann Thorpe, and Diane M. Barrett
HortScience Apr 1 2008: 542–543. [Abstract] [Full Text] [PDF]

Corresponding author. E-mail tmgradziel@ucdavis.edu

Categories: HortScience

Southern Farmers Realize Profits from Highbush Blueberries

June 25, 2008 · Comments Off

New blueberry crops may enhance Georgia’s economy


  

 


Southern highbush blueberry.  

Click here for more information.

 


TIFTON, GA — Southern highbush blueberries are emerging as an important fruit crop in Georgia, but experienced farmers say the fruit can be a challenge to grow. To determine if the blueberry shows true promise as a profitable crop, researchers at the University of Georgia recently studied the economics of these tiny berries.

Esendugue Greg Fonsah, Assistant Professor in the Department of Agricultural and Applied Economics at the University of Georgia, undertook a research project designed to determine the profitability of the blueberry industry in Georgia by estimating total costs of cultivating southern highbush blueberries. He explained that, although there are several methods of profit determination, the “risk-rated” method was adopted for his study.

According to Fonsah, “Southern highbush blueberries are a rapidly emerging crop with a bright future in Georgia. These berries ripen during a lucrative market window in April and May, but blueberries, like other fruit crops, are subject to price and yield fluctuation. These volatilities depend on several factors, including the cultivar produced and product sold (i.e., fresh or frozen), locality, aggregate productivity, targeted market, and timing. As a result, profit margin is very difficult to determine.”

Fonsah and his team studied the costs of growing the highbush blueberries over a four-year period. The first year of the study, establishment and maintenance cost of growing the crop in Georgia was approximately $9585.55 per acre. After the fourth year, which was considered to be the first year of actual full production, the cost was estimated at $13,547.35 per acre. The compounded and recaptured establishment annual costs were $2176.43 per acre, and the risk-rated expected returns over total costs 66% of the time were $5452.65 per acre. Fonsah remarked, “In conclusion, our research showed that the chance that farmers will show a profit from the highbush blueberry crop is 92%.”

Dr. Fonsah commented that “the results of our study show that the blueberry industry is viable and worth farmers’ investment. From our research results, we can inform growers that their return on investment will be positive. Also, our study explained agricultural practices necessary to grow good-quality blueberries. The impact is already visible as growers are expanding their acreage. This increase in acreage plus experience will boost production and value. The viability of the blueberry industry will have a spill-over effect to the agricultural economy, in that growers will need to buy more materials and machines. This will translate into the creation of jobs in our area.”

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The complete study and abstract are available on the ASHS HortTechnology electronic journal web site: http://horttech.ashspublications.org/cgi/content/abstract/17/4/571/

Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education and application. More information at ashs.org

 


This press release also available on EurekAlert!

Original Article:

Risk-rated Economic Return Analysis for Southern Highbush Blueberries in Soil in Georgia
Esendugue Greg Fonsah, Gerard Krewer, Kerry Harrison, and Michael Bruorton
HortTechnology 2007 17: 571-579. [Abstract] [Full Text] [PDF]

Corresponding author. E-mail: gfonsah@uga.edu

Categories: HortTechnology

“V45″ Harvester Moves South

June 25, 2008 · Comments Off

High-tech harvester cuts labor costs, maintains quality of Southern blueberry crops


 


A bowl of berries is a treat for the eye as well as a delight for the palate. But these tasty little morsels happen to be quite tricky to grow,… 

Click here for more information.



KEARNEYSVILLE, WV — To meet increasing consumer demands for healthy, high-quality fruit, commercial growers in the United States are ramping up production of blueberries. Domestic production of this tiny antioxidant-packed “super food” has increased in seven Southeastern states, accounting for almost one-third of the U.S. acreage of two of the most popular types of blueberries.

Looking for ways to maintain blueberry quality while keeping production costs low, researchers at the United States Department of Agriculture (USDA) turned to the “V45″. A mechanical harvester originally developed in 1994 to process blueberries in Michigan, the “V45″ was named for its “V” shaped, 45-degree-angled cutting tool. The V45 features an innovative cane-dividing and positioning system and cushioned surfaces for catching delicate berries. The once-experimental machine was proven to be effective as a commercial harvester for northern highbush blueberries in Michigan, but until recently had not been widely used by growers of southern blueberry cultivars.

Dr. Fumiomi Takeda, Research Horticulturalist and Lead Scientist at the USDA Agricultural Research Service, and a team of researchers published their findings of the V45 study in the January 2008 issue of HortTechnology. The study was performed in Georgia to evaluate harvest efficiency and fruit quality of the V45 harvester on specially pruned rabbiteye and southern highbush blueberry crops. Takeda noted that northern and southern highbush blueberries are most often grown for the fresh fruit market and are almost exclusively hand-harvested. Highbush berries are of higher quality and have a longer shelf life than rabbiteye blueberries, which are often machine-harvested in June and July.

According to the report, harvesting highbush blueberries is labor-intensive, requiring up to 520 hours of labor per acre. With labor costs projected to rise while fruit prices are expected to drop as the blueberry industry expands in areas of the southeast U.S. and California, researchers are looking for ways to develop mechanized harvesting system for southern highbush and rabbiteye blueberries that retains the fruit’s fresh-market quality.

To study the effects of mechanical pruning techniques on fruit yield, blueberry bushes were pruned to remove 30% to 50% of the canopy and open the middle, resulting in V-shaped plants of rabbiteye and southern highbush blueberries. Researchers discovered that yields of winter-pruned ‘Brightwell’ rabbiteye blueberry were lower compared with unpruned plants during both years, but winter-pruned ‘Powderblue’ rabbiteye blueberry plants produced as much as unpruned plants in 2005. In ‘FL 86-19’ southern highbush blueberry, plants that were summer-pruned in June produced as much as unpruned plants the following year, but plants that were winter-pruned in February had lower yields than unpruned plants the same year.

To reduce labor requirements and the cost of harvesting fruit produced for processing, effective power pruning and hedging equipment and mechanical harvesting systems are critical. Takeda explained the significance of the research, stating: “We found that V45 has the potential to mechanically harvest some rabbiteye cultivars while maintaining quality approaching that of hand-harvested fruit. Improved V45 mechanical harvesting system for blueberries in Georgia can help to reduce cost of harvesting and relieve potential labor shortage because of stricter immigration laws.”

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The complete study and abstract are available on the ASHS HortTechnology electronic journal web site: http://horttech.ashspublications.org/cgi/content/abstract/18/1/130

Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education and application. More information at ashs.org


This press release is also available on EurekAlert!

Original Article:

Assessment of the V45 Blueberry Harvester on Rabbiteye Blueberry and Southern Highbush Blueberry Pruned to V-Shaped Canopy Fumiomi Takeda, Gerard Krewer, Elvin L. Andrews, Benjamin Mullinix, Jr, and Donald L. Peterson
HortTechnology 2008 18: 130-138. [Abstract] [Full Text] [PDF]

Corresponding author. E-mail: fumi.takeda@ars.usda.gov

Categories: HortTechnology