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Growing the Valley: Daily Summaries Delivered
by University of California, Agriculture and Natural Resources
This is a podcast that goes over new research and basic information about growing orchard crops in the Central Valley of California
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- 3 weeks ago38 min
Alejandro Hernandez on phytophthora in pistachios
Phytophthora infections have become more common in pistachio. Alejandro Hernandez covers the biology of this disease, as well as his research on rootstock susceptibility and the efficacy of new fungicides. Please note that some of these fungicides are not registered for use in pistachio.Episode transcriptMention of a pesticide does not constitute a pesticide recommendation, and mention of specific trade names does not constitute an endorsement. Always follow the pesticide label. Find out more at ipm.ucanr.edu The views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner, and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.
- May 13, 202624 min
ACC research in olives with Becky Wheeler-Dykes
Fruit removal is a serious issue in table olive production, namely because the fruit are harvested before they are ripe. ACC, an ethylene precursor, has the potential to improve fruit removal (please note that the commercial product is not registered in olives yet and cannot legally be used). Becky Wheeler-Dykes, an advisor in Glenn, Colusa, and Tehama Counties, has been examining its efficacy in olives with a team of researchers at UC Davis. She shares some preliminary, and promising results in this week’s episode.Episode transcriptMention of a pesticide does not constitute a pesticide recommendation, and mention of specific trade names does not constitute an endorsement. Always follow the pesticide label. Find out more at ipm.ucanr.eduThe views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner, and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.
- May 6, 202636 min
Distribution uniformity return on investment tool
Anyone who has an irrigation system knows that it needs to be maintained for peak performance. Anyone who has an irrigation system also knows that almost everything seems to be more important in the moment than flushing those lines or checking pressures. A distribution uniformity test is a good way to assess the health of your irrigation system, but it isn’t always easy to figure out if the cost of making these fixes, particularly big fixes, will pencil out. CURES got a grant a few years back to develop a tool to estimate the return on investment for making fixes to a system. Inge Bisconer and Parry Klassen share how the tool works and what spurred them to develop it in this week’s episode. Episode transcriptThe views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.Come to an upcoming extension meeting!Sacramento Valley The Nickels Field Day is on Tuesday May 19 San Joaquin Valley (scroll to the bottom)
- Apr 29, 202627 min
2026 Prune Fruit Set, GDH30, and Cost of Thinning
In 2026 the Sacramento Valley prune industry is experiencing high fruit sets, high GDH 30, and a high cost of fruit thinning because of very diesel prices. Jaime Ott (UCCE Tehama), Domena Agyeman (UCCE Butte), and Franz Niederholzer (UCCE Colusa) break down prune grower crop management considerations given this tricky set of circumstances. Upcoming Orchard Meetings: The Almond Board of California also has four upcoming IPM meeting, tackling rodents, red leaf blotch, Carpophilus and other pests:Bakersfield: Thursday, April 30 Wednesday, June 16, if you’re an almond variety nerd like me you can’t miss the Almond Board’s Crackout Event at Merced CollegeIn the Sacramento Valley: Nickels Field Day is Tuesday, May 19 in ArbuckleI have two almond variety meetings at the Chico State Farm in June. Thursday June 11 and Thursday, June 25th. The Third Thursday on July 16 will be in Yuba City and cover Walnut MoldThe Third Thursday on August 20 will be in Orland and tackle labor economicsFollowing a harvest season hiatus, there will be a Third Thursday on November 19 in Yuba City recapping 2026’s IPM challenges and lessonsThe views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music. The views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.<p data-rte-preserve-empty="t
- Apr 22, 20261h 10m
Last update from the 3rd generation Regional Almond Variety Trial
The 3rd Generation RAVT recently wrapped up, and Luke, Phoebe, and Roger sit down one final time to discuss the findings. While the overall results are discussed, they also discuss each of the strengths and weaknesses of the 13 remaining varieties. It’s a long episode, check out the transcript if you are interested in something specific to get the timestamp.Episode transcriptThe views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandvThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.Come to an upcoming extension meeting!Sacramento Valley The Nickels Field Day is on Tuesday May 19 San Joaquin Valley (scroll to the bottom)
- Apr 15, 202621 min
The effect of pollen on pistachio fruit and polyphenol deposition
Giulia Marino and Pat J Brown (both UC Davis) have been examining another potential influence on polyphenol deposition in pistachio: whether the pollen source impacts deposition rates. In this episode, Giulia shares her results, as well as some other unexpected findings from pistachio xenia (the effect of the pollen source on the fruit). Episode transcriptThank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.The views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.
- Apr 8, 202630 min
2026: Earlier Almond Irrigation Start Revisited
Dr. Or Sperling (ARO-Volcani) and Zac Ellis (OFI) discuss the exciting 2025 results from their proactive irrigation scheduling application in California almond orchards. You can ask questions and provide feedback to the researchers at: Or Sperling: orsp@agri.gov.il or +972 52 6278189 Zac Ellis: Zac.ellis@ofi.com (559) 303-0599Maciej Zwieniecki: mzwienie@ucdavis.eduCome to an upcoming extension meeting!In the San Joaquin Valley: UC Cooperative extension has a Regenerative Almond Orchard Field Day on Tuesday, April 21st at the UC Merced Experimental smart farmThe Almond Board of California also has four upcoming IPM meetings, tackling rodents, red leaf blotch, Carpophilus and other pests: Ceres: Wednesday April 22 Durham: Thursday April 23 Fresno: Tuesday April 28And Bakersfield: Thursday, April 30 And finally Wednesday, June 16, if you’re an almond variety nerd like me you can’t miss the Almond Board’s Crackout Event at Merced College In the Sacramento Valley we have a Third Thursday: Nematode Management in Orchards meeting in Orland on April 16 from 11-1 Nickels Field Day is Tuesday, May 19 in Arbuckle I have two almond variety meetings at the Chico State Farm in June. Thursday June 11 and Thursday, June 25th. The Third Thursday on July 16 will be in Yuba City and cover Walnut Mold The Third Thursday on August 20 will be in Orland and tackle labor economics Following a harvest season hiatus, there will be a Third Thursday on November 19 in Yuba City recapping 2026’s IPM challenges and lessons The views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general information purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.Follow us on Twitter! @SacOrchards and @SJVtandv
- Apr 6, 202651 min
Encore: Earlier Irrigation Start in Almond
Drs. Or Sperling (ARO-Volcani) and Maciej Zwieniecki (UC Davis) discuss their groundbreaking research on almond irrigation. That research has culminated in an exciting irrigation scheduling application. We also get an overview of almond production in Israel. The UC Davis Carbohydrate Observatory is also referenced. Have feedback or questions for the researchers? Or Sperling: orsp@agri.gov.il or +972 52 6278189 Maciej Zwieniecki: mailto:mzwienie@ucdavis.eduZac Ellis (Olam): Zac.ellis@ofi.com (559) 303-0599Come to an upcoming extension meeting!In the San Joaquin Valley: Tomorrow Tuesday April 7 there is an Almond Board of California listening session in Modesto on Cornucopia Way at 8:30 AM UC Cooperative extension has a Regenerative Almond Orchard Field Day on Tuesday, April 21st at the UC Merced Experimental smart farmThe Almond Board of California also has four upcoming IPM meetings, tackling rodents, red leaf blotch, Carpohilus and other pests: Ceres: Wednesday April 22 Durham: Thursday April 23 Fresno: Tuesday April 28And Bakersfield: Thursday, April 30 And finally Wednesday, June 16, if you’re an almond variety nerd like me you can’t miss the Almond Board’s Crackout Event at Merced College In the Sacramento Valley we have a Third Thursday: Nematode Management in Orchards meeting in Orland on April 16 from 11-1 Nickels Field Day is Tuesday, May 19 in Arbuckle I have two almond variety meetings at the Chico State Farm in June. Thursday June 11 and Thursday, June 25th. The Third Thursday on July 16 will be in Yuba City and cover Walnut Mold The Third Thursday on August 20 will be in Orland and tackle labor economics Following a harvest season hiatus, there will be a Third Thursday on November 19 in Yuba City recapping 2026’s IPM challenges and lessons The views, thoughts, and opinions expressed are the speaker’s own and do not represent the views, thoughts, and opinions of the University of California. The material and informati
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About Growing the Valley
This is a podcast that goes over new research and basic information about growing orchard crops in the Central Valley of California
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