Posts Tagged: grape
UC ANR scientists to provide information at the Malcolm Media Grape, Nut & Tree Expo at Fresno fairgrounds on November 14, 2017.
Malcolm Media is providing three Ag expos this month: A tree and vine expo in Turlock was presented today; a grape expo will be in Sonoma on November 10, 2017, and a grape, nut and tree fruit expo will be at the Fresno fairgrounds on November 14, 2017. To pre-register, please use the above link.
This blog article is on the November 14th expo in Fresno. The Grape, Nut & Tree Fruit Expo is provided every year at the BIG Fresno Fair grounds. Held in the heart of grape, nut and tree fruit growing areas, the expo is sponsored by the Central Valley wine, table, and raisin grape, tree fruit and nut industries. UC ANR scientists involved with applied research and extension for these cropping systems will provide presentations to the attendees.
The expo is free, and has free seminars that provide continuing education units approved by CDPR for CE/CCA licenses (1 hour of laws and regulations, and 4 hours of other), a free breakfast, a free lunch, and industry exhibits. It starts at 7:00 am and finishes at 2:00 pm. UC ANR speakers include:
- George Zhuang, Fresno County UCCE farm advisor in viticulture will present “Cropload Management on Young Pinot Grigio Vines”
- Kent Daane, UCCE specialist at Kearney Ag Research & Extension Center (KARE), specializing in entomology, will present “Update on Black Widow Control in Table Grapes”
- Kurt Hembree, Fresno County UCCE farm advisor in weed management will present “Herbicide use for Vineyard Weed Control” and “What's New in Tree & Vine Weed Management”
- Ashraf El-Kereamy, Kern County UCCE farm advisor in viticulture will present “Improving Productivity & Quality of Grapes”
- Kris Tollerup, Cooperative extension advisor at KARE, specializing in IPM, will present “Effective Ant Management to Minimize Damage at Harvest”
- Themis Michailides, Plant Pathologist at KARE, will present “Band Canker of Almond Becoming a Threat to New Plantings”
- Kevin Day, Tulare County UCCE Director and farm advisor in pomology, will present “Lowering Labor Costs with Pedestrian Orchards”
Biennial UC Grape Day 2013 Aug. 13 in Parlier
Larry Williams, professor in the Department of Viticulture and Enology at UC Davis, made use of a large, wine grape variety trial at Kearney to determine the contribution that water relations and vine hydraulics have on growth differences among grapevine cultivars. The study will help determine the most appropriate parameters for managing irrigation across divergent varieties and growing locations.
Following Williams' field demonstration, the presentations move indoors and include:
- Ecology of mycotoxin-producing aspergilli in raisin vineyards by Teresa L. O'Keeffe and Jeffrey D. Palumbo of USDA Agricultural Research Service
- Effects of pre-harvest calcium chloride and chlorine dioxide applications on fruit quality of crimson seedless table grapes by Matt Fidelibus, UCCE specialist in the Department of Viticulture and Enology at UC Davis,
- Wood disease management options for grapevines in the San Joaquin Valley by Philippe Rolshausen, UCCE specialist in the Department of Botany and Plant Sciences at UC Riverside
- Movento in table grapes: understanding use patterns and expectations by David Haviland, UCCE advisor in Kern County
- Understanding wine oxidation by Andrew Waterhouse, professor in the Department of Viticulture and Enology at UC Davis
Kearney-based Fidelibus hosts the event every two years at the field station, 9240 S. Riverbend Ave., Parlier. For the 2013 event he has applied for 1.5 hours continuing education credit.
Fidelibus will be tweeting about GrapeDay 2013 from his Twitter account @grapetweets using the hashtag #ucgrapeday. All Grape Day participants and attendees who use Twitter are encouraged to participate in discussions related to the event using the hashtag #ucgrapeday.
Attendance at UC Grape Day 2013 is free, but online advance registration is requested for planning purposes. To register, go to http://ucanr.edu/sites/grapeday.
UC researchers screen promising new winegrapes at Kearney
The research aims to give vintners blending varieties that will make San Joaquin Valley wines with familiar names more interesting. Vintners may use up to a quarter of their grape volume to impart distinctive color, flavor and structure to a varietal wine without calling it a blend. Grapes being studied at Kearney may one day add a certain flavor note - such as cherry, tannin, black pepper or citrus - to fine San Joaquin Valley wine.
"High levels of color and tannin cannot compensate for a variety whose yield is far below the economic threshold," Wolpert said.
At another stop on the Grape Day tour, UC Cooperative Extension viticulture farm advisor Mark Battany demonstrated the "Paso Panel." Battany developed the tool - composed of an inexpensive, lightweight solar panel and digital meter mounted on an aluminum frame - to help farmers fine tune their irrigation scheduling.
The Paso Panel allows farmers and researchers to quickly and easily calculate the amount of canopy shade in a vineyard or a vineyard row. The data can be combined with climate data to calculate crop water needs.
Measuring soil moisture and using plant-based monitoring systems are other ways to determine plant water needs, but Battany said currently climate-based methods are underused.
"A lot of farmers guess when they need to irrigate," Battany said. "People tend to guess on the conservative side, and put on more water than necessary."
New York-based USDA-ARS plant breeder Peter Cousins was also at the field day to explain his grape root stock variety trials planted at the Kearney Agricultural Research and Extension Center. Cousins and his staff screen 3,000 to 4,000 seedlings a year. The best prospects are sent to California, where 140 experimental root stocks are growing.
"Here at Kearney, the vines grow so vigorously, we can get more than 100 cuttings per plant," said Cousins. "This is their last stop, where we determine whether you can grow them in a field and make wood that propagates vines."
Posters for Kearney Grape Day, August 16, 2011
Peter Cousins of the USDA-ARS in Geneva, N.Y., will be referring to these charts during his presentation at Kearney Grape Day. The title of Cousins' presentation is "The development of new grape rootstocks for the San Joaquin Valley."
Nematode poster (pdf)
Rootstock selections poster (pdf)
Kearney Grape Day 2011: Scientist to lead tour through the inside of grapevines
USDA plant biologist Andrew McElrone is using high resolution computed tomography – a type of cat scan similar to the medical imaging diagnostic system – to cruise through plant veins and vessels to better understand grapevines’ water transport system.
The research is conducted on live and dry grapevines at the Lawrence Berkeley National Laboratory. Like in medicine, each cat scan produces numerous digital slices of grapevine, which are stacked on top of each other using special engineering software to reconstruct the system.
“We can then spin the images around into various orientations, moving through individual vessels,” McElrone said.
Grape Day registration begins at 7:30 a.m. Aug. 16 at the Kearney Agricultural Research and Extension Center, 9240 S. Riverbend Ave., Parlier, Calif. Field tours are conducted from 8 to 9:30 a.m. and classroom presentations will be from 10 a.m. to 12 noon.
Registration is $10 per person. Advance registration is offered online.
Field tour topics are:
- New wine grape varieties for the San Joaquin Valley by UC Cooperative Extension viticulture specialist James Wolpert, UC Davis
- The development of new grape rootstocks for the San Joaquin Valley by geneticist Peter Cousins, USDA-ARS, Geneva, N.Y.
- Using the ‘Paso Panel’ to aid in irrigation scheduling by viticulture farm advisor Mark Battany, UC Cooperative Extension, San Luis Obispo County
Classroom presentations:
- Understanding water use of grapevines by plant biologist Andrew McElrone, USDA-ARS, Davis, Calif.
- Trapping and baiting for gopher control in vineyards by vertebrate IPM advisor Roger Baldwin, Kearney, Parlier, Calif.
- Critical weed free periods in vineyard development by vegetation management farm advisor Kurt Hembree, UC Cooperative Extension in Fresno County
- Fruitfulness of DOV raisin cultivars by UC Cooperative Extension viticulture specialist Matthew Fidelibus, UC Davis and Kearney.
For more information, contact event coordinator Matt Fidelibus, mwf@uckac.edu, (559) 646-6500.
In a presentation that harkens back to the old Disneyland ride "Adventure Thru Inner Space," a USDA scientist takes participants on a tour inside of grapevines.