- Author: Brooke Jacobs
University of California/Nickels Trust
Nickels Soil Lab
Research and/or demonstrations project proposals for in-kind supported field work (no per acre fee) for the 2014 growing season in a commercial tree crop orchard setting less than an hour north of Davis are now requested by the Leslie J. Nickels Trust and the Nickels Soils Lab (NSL). Proposals are due by November 7, 2013.
The NSL is located southwest of Arbuckle, California, just off I-5. Consisting of 200 acres
split between two blocks, NSL has open land and existing orchards available for field projects. Usable orchards available for research include most commercial almond varieties ranging in age from 2 years to 24 years grafted onto a wide range of rootstocks. Drip, sub-surface drip and micro-sprinkler irrigated orchards are available. Walnut plantings consist of mature ‘Chandler’ and ‘Howard’ on both paradox hybrid or Northern California Black rootstocks and 7th leaf ‘Chandler’, ‘Tulare’, ‘Forde’ and ‘Sexton’ on Paradox. The olive planting is currently reserved. New plantings will also be considered upon request.
The research facility provides labor, equipment, automated web accessed weather station, storage buildings and all normal and most experimental horticultural inputs with minimal charge to approved projects. Abbreviated summary project reports are required annually. New project proposals are due on November 7th, 2013.
For projects requiring an outreach component, the annual NSL field day is an established program, held in early to mid-May, features presentations summarizing selected projects and draws an audience of 150-250 growers, pest control advisors and ag industry reps.
For lab history, instructions and downloadable project proposal forms please visit: http://cecolusa.ucdavis.edu
Contact Franz Niederholzer at (530) 458-0570 (office), (530) 218-2359 (cell), or fjniederholzer@ucanr.edu for more information.
/span>- Author: Brooke Jacobs
In the early 1990’s UC Davis Professor Ken Shackel initiated a new research program focused on developing a plant based tool for measuring plant water stress and scheduling irrigation. Dr. Shackel was interested in using a pressure chamber to measure stem water potential, characterize plant water status, and time irrigation throughout the growing season. Pressure chambers had been used for years prior to this research to characterize plant water status and water stress. However, there were no tree crop reference water potential values available that could be used to guide irrigation scheduling decisions. Beginning in the early 1990’s
The Fruit and Nut Research and Information Center collaborated with Dr. Shackel and Charlie Turner (Academic Technology Services, UC Davis) to create a new “Irrigation Scheduling Using Stem Water Potential Measurements” website. Our new website calculates reference water potential for almond, walnut, prune, and grape crops using weather data obtained from nearby CIMIS weather stations and reference water potential models (Shackel et al 1997 and 2000). The home page includes an interactive google map enabling users to select the closest CIMIS station, or the station in the most similar microclimate. We also include pages with background information on tree water use physiology, and a chart outlining the physical symptoms associated with a range of stem water potential measurements in prune, almond, and walnut.
References
McCutchan, H. and K.A. Shackel. 1992. Stem water potential as a sensitive indicator of water stress in prune trees (Prunus domestica L. cv. French). J. Amer. Soc. Hort. Sci. 117:607–611
Shackel, K.A., H. Ahmadi,W. Biasi, R. Buchner, D. Goldhamer, S. Gurusinghe, J. Hasey, D. Kester, B. Krueger, B. Lampinen, G. McGourty, W. Micke, E. Mitcham, B. Olson, K. Pelletrau, H. Philips, D. Ramos, L. Schwankl, S. Sibbett, R. Snyder, S. Southwick, M. Stevenson, M. Thorpe, S. Weinbaum, and J. Yeager. 1997. Plant water status as an index of irrigation need in deciduous fruit trees. HortTechnology 7:23–29.
Shackel, K., B. Lampinen, S. Sibbett, and W. Olson. 2000. The relation of midday stem water potential to the growth and physiology of fruit trees under water limited conditions. Acta Hort. 537:425–430.
Fulton, A., R. Buchner, B. Olson, L. Schwankl, C. Giles, N. Bertagnia, J. Walton, and K. Shackel. 2001. Rapid equilibration of leaf and stem water potential under field conditions in almonds, walnuts and prunes. HortTechnology 11:609–615.
- Author: Brooke Jacobs
The Fruit and Nut Research and Information Center (FNRIC) is excited to announce the new pomegranate section of our website. Pomegranate cultivation has surged over the past decade in California. The industry has grown rapidly from 4,800 acres harvested in 2001 to 28,000 acres harvested in 2011 (NASS 2013).
University of California Farm Advisors and Extension Specialists have been working hard to meet the demand for information about successful cultivation of pomegranate in California’s unique climate and soils, including several growers meetings and a new Pomegranate Program website hosted by the Fresno County Cooperative Extension office. The extensive new pomegranate pages on our site were written by FNRIC staff and reviewed by experts in UC Cooperative Extension and the USDA Germplasm Repository.
Our new pomegranate section contains a wealth of information about:
- Propagation
- Scion selection
- Orchard establishment
- Pests
- Harvest and postharvest practices
- Images of a pomegranate cultivars
- Links to additional resources
Expert Reviewers:
Louise Ferguson, UCCE Specialist, Department of Plant Sciences at UC Davis
Maxwell Norton, UCCE Advisor in Merced and Mariposa Counties
Jeff Moersfelder, USDA ARS National Clonal Germplasm Repository
- Author: Brooke Jacobs
I am excited to announce a new peer–reviewed section of our website focused on sweet cherry production in California. Sweet cherry was originally introduced into the United States in 1629, and production has been well established in California since the 1800s. Today, California produces 68,000 tons of sweet cherries at a market value of almost 200 million dollars (USDA 2012).
This new website includes information on a wide range of topics including:
- Ideal climate and soil conditions
- Pollination
- Fruit development
- Common propagation techniques
- Scion and rootstock selection
- Orchard establishment
- Image gallery of common pests and diseases
Expert reviewers:
Joe Grant (UCCE Farm Advisor in San Joaquin County)
Kitren Glozer (Project Scientist in the Department of Plant Sciences at UC Davis)
- Author: Brooke Jacobs
1) new grower with less than three years of experience working with tree crops
2) in the process of transitioning between crops (ex. from peach to almond)
3) farm less than 40 acres of tree crops
Link to online scholarship application.
Link to course webpages for more information.
Applications are due October 1st. The FNRIC advisory board, composed of UC faculty, extension specialists, and farm advisors, will meet to select scholarship recipients soon after the deadline. If you have questions please contact Brooke Jacobs (bsjacobs@ucdavis.edu, 530-754-9708).