Walnuts Archives - Page 9 of 9 - West Coast Nut

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Walnuts



The Battle Against NOW and Coddling Moth

By Julie R. Johnson, Contributing Writer

How to the fight the battle against Navel orangewood (NOW) and coddling moth in walnuts was the take home message of Emily Symmes, UCCE Area IPM Advisor, Sacramento Valley, in her presentation at the West Coast Nut hosted Annual Walnut Trade Show at the Yuba-Sutter Fairgrounds on Jan. 6, 2017. “Coddling moth hit pretty hard this last harvest, as did Navel orangeworm,” she said. “A lot of people were caught a little off guard by both.” Of particular concern was damage seen in the later maturing varieties, which have historically been considered less vulnerable to worm damage. “Earlier-than-typical, and spread...

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When to Begin the First Irrigation

By Cecilia Parsons, Associate Editor

Don’t Play A Guessing Game   Farm advisors and professionals in orchard water management emphasize that tools to determine soil moisture in relation to water holding capacity of the soils and tree water stress in your walnut orchards are critical to irrigation decisions.   Allan Fulton, University of California Cooperative Extension (UCCE) irrigation and water resources advisor in Tehama County, said, many walnut growers and managers in the Central Valley are using some combination of soil moisture sensors, water budgeting, and tree stress indicators to determine initial irrigation needs and they also use them to make sure trees have adequate...

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Walnuts: When to Begin the Irrigation Season

By Allan Fulton, UCCE Farm Advisor, Tehama County
and Bruce LampinenIntegrated Orchard Management, Davis, CA
and en Shackel, UC Professor Department of Plant Sciences, Davis, CA

Overly aggressive, early irrigation can saturate soils and deprive roots of necessary oxygen to grow. Soil fungal pathogens such as Phytophthora thrive in saturated soils and can infect tree roots. The result is declining tree health, productivity, and higher incidence of tree death.  Figure 1 displays an assortment of disorders that have been observed and associated with extended periods of overly wet soil conditions, particularly in the spring (April, May, and early June).  When orchard water stress is monitored with a pressure chamber and midday stem water potential (SWP) levels are steadily near or above predicted baseline levels for fully...

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What you need to Consider Before Building a Walnut Huller

By Kathy Coatney, Editor

A wet harvest is a concern for many walnut growers. Will I have a home for my nuts or will I be left out in the cold? A major motivation for growers to move into hulling is ensuring their own nuts, according to Bill Carriere, president of Carrier Family Farms in Glenn, California. Carriere farms have been hulling walnuts since 1974. Installing a huller is a big capital outlay, Carriere continued. “Some of it is basically just insurance that you have a home for your walnuts at the time you want it.”   Individual Versus Commercial Roger Isom, CEO of...

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Processing: The Newest in Sorting Machines

By Cecilia Parsons, Associate Editor

Automation, food safety and efficiency are driving forces in nut processing equipment innovation.   Leaders in some of the major walnut processing equipment and systems design companies spoke about some of the changes that have occurred in walnut hulling, sorting and drying.   The process begins right after walnuts are picked up from the orchard floor and delivered to a huller. Unlike almonds, walnuts are not stockpiled due to their high moisture content. They must be hulled and dried quickly to preserve quality. (more…)

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