West Coast Nut nutrition Archives - westcoast_nut



Nutrition

What Walnut Growers Need to Know About Nutrition

By: Cecilia Parsons, Associate Editor   Because of looming state regulations meant to protect ground water sources from nitrate contamination, California growers are being asked to re-examine how the amount of nitrogen (N) they apply compares with the amount they remove from their fields. Walnut growers are no exception. In order to use this nutrient more efficiently, growers and orchard managers may need to recalculate their application rates. Cost of over application is also a concern for growers.   Ongoing research by University of California (UC) and University of California Cooperative Extension (UCCE) farm advisors, funded by the California Department of...

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The Ins and Outs of Pistachio Nutrition

The Ins and Outs of Pistachio Nutrients

By: Cecilia Parsons, Associate Editor Think of the nutrients in orchard soil as a ‘bank balance.” Tree roots access the ‘money’ in the soil, using water and oxygen as their passbook.   In a presentation at the 2017 Pistachio Short Course, University of California (UC) Davis plant scientist Patrick Brown explained the basics of plant nutrition including how nutrients are acquired by plants and the when and where of tree nutrition—basic principles necessary to crop production.   Nutrition 101   Nutrients are taken up in water only by active roots on trees with leaves. While the size of the nutrient pool...

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Key Points to Ethephon Use in Walnuts

Key Points to Ethephon Use in Walnuts

By: Cecilia Parsons, Associate Editor Use of the plant growth regulator ethephon can be an important management tool for walnut growers who want to maximize kernel quality and minimize navel orangeworm (NOW) damage.   California walnut growers are also using ethephon to better manage their harvest timing said Dani Lightle, University of California Cooperative Extension (UCCE) orchard systems advisor based in Glenn County.   Ethephon Ethephon has a long history of usage since its discovery almost 50 years ago and Environmental Protection Agency (EPA) registration in 1973. It is one of the most widely utilized plant growth regulators in the world....

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Nutrient Management of Zinc in Pistachios

By: Sabrina Hill, Contributing Writer Zinc is among the most likely deficient micronutrients for pistachios in the California growing areas, but there are ways for growers to monitor, prevent, and treat low zinc levels in the orchard. As summer progresses, growers should be considering leaf sampling to check for zinc deficiency in the orchard.   Author’s note: Information herein was collected from scholarly papers and presentations by University of California (UC) advisors Bob Beede, Brent Holtz, and Craig Kallsen.   Importance of Zinc Zinc is necessary for formulation of Auxin, which plays a role in cell elongation and the forming...

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Nitrogen Calculator Optimizes N Use

By: Almond Board of CA, Contributing Writer Under the Irrigation Lands Regulatory Program (ILRP), Central Valley Water Quality Coalitions’ reporting requirements include farm evaluations, nitrogen summary reports, and a sediment and erosion plan. In high-vulnerability groundwater areas, growers are required to submit certified summary reports annually; in low-vulnerability areas, the report must be kept on-site and certification is not required.   It is important to comply with these requirements, as the Central Valley Regional Water Board is actively enforcing the program with heavy fines for growers who either have not signed up for a coalition or who have not submitted a...

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