Irrigation Archives - Page 10 of 10 - West Coast Nut



Aboveground Water Storage in California

By Jodi Raley, Director of Regulatory Affairs, Western Agricultural Processors Association

What is the cost of getting water storage in California? Funding requests to the California Water Commission’s Water Storage Investment Program (WSIP) suggest the bill is a little over $5.7 billion. With that in mind, the applicants requesting these dollars are all competing for their slice of the $2.7 billion pie that makes up the WSIP portion of the California Prop 1B Water Bond. With 12 different projects on the table, the members of the California Water Commission reviewed applications to determine basic eligibility. Following this action at last month’s board meeting 11 projects now remain. Among the remaining projects...

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Subsurface Drip Irrigation has Pros and Cons in Almonds

By Julie R. Johnson, Contributing Writer

Subsurface drip irrigation in almonds may not be the way to go for all growers in the state, but for two almond operations, Terranova Ranch in Fresno County and 4R Farming in Arbuckle, the practice has proven to be very successful. The use of subsurface drip irrigation (SDI) is nothing new on a worldwide level. In Israel the practice has been around since the 1960s.  SDI has had many diverse uses around the world for a multitude of crops on multiple soil types in various climates. Here in the United States, studies and research into SDI, its advantages and disadvantages,...

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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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State Water Board’s Plan to Take Our Water

By Roger Isom, President/CEO, WAPA

The loss of water has been an ongoing battle in California for years.  While Mother Nature takes her turn every now and then, nothing has impacted this state’s available water supply more than actions by the state and federal governments in taking water for “ecological, biological or environmental purposes”; in most cases as a priority above any municipal or agricultural use.   For example, the imposition of the Central Valley Project Improvement Act (CVPIA) and the Endangered Species Act (ESA) related biological opinions (BiOps) for the salmon and delta smelt resulted in a loss of over 1 million acre-feet of water...

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Groundwater Recharge In Almonds

By Cecilia Parsons, Associate Editor

With California’s drought in mind, more researchers are delving into plant water use, specifically, plant responses to limited water during the growing season.   University of California plant scientist Ken Shackel, a speaker at the 2016 South Valley Nut Conference, has been working on a project that addresses the opposite situation: how a plant responds to too much water. Shackel’s research project in the northern San Joaquin Valley is looking less at plant water use and more on how almond trees react over time to wintertime flooding of an orchard.  The findings from this multiple year study could pave the...

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