Pistachios Archives - West Coast Nut

-Advertisement-

Pistachios



What We Know About Winter Chill and Pistachios


Eighty-degree days in the month of November did not send California pistachio trees into their winter rest period on schedule. With harvest at an end and irrigations done to fill soil profile, the trees were primed to enter their needed dormant stage, but warm days and barely cold nights are not conducive to sending pistachio trees into dormancy. (Editor’s note: the end of the month brought some welcome cold to pistachio growing regions in the San Joaquin Valley. How the remainder of the dormant season plays out is yet to be seen.) Industry Research Industry research has determined a lack of sufficient hours below 45 degrees F affects the nut crop that develops in the spring. There can be poor fruit bud development, delayed or strung out bloom and poor overlap with pollinators. The ability to set a crop can be affected as well as maturity timing resulting in need...

Read More

Winter Prep for Pistachios


Almonds and walnuts may be California’s heavy hitters in the tree nut market, but pistachios also hold a valuable place, even if this crop experiences less of the spotlight, and has less research that finely tunes the growing processes. “There’s no step-by-step guide because everyone does different things,” says Craig Kallsen, University of California Cooperative Extension (UCCE) farm advisor specializing in citrus and pistachios. Even though there aren’t any hard and fast rules about pistachio orchard best practices, there are a few things growers can do to ensure their orchard remains healthy during the winter months. Slowing Growth A significant step in the preparation for winter for pistachios begins in August when the water gets turned off. This is especially important for young trees under six years, and in areas where there is not a significant transition from summer to winter, as these trees suffer from juvenile winter...

Read More

Postharvest Pistachio To-do List


When the last truckload of pistachios rolls out of the orchard, it’s not the time to relax—it’s time to prepare for a successful harvest next year. Guidelines for postharvest pistachio management by University of California (UC) Davis researchers cover all postharvest activities necessary to ensure a quality crop for the next year. Pest control and crop advisors also have their own checklists that cover specific challenges and growing conditions in their individual orchards. Evaluate IPM Plan Since insect pests and diseases are often the cause of poor yields and quality in a nut crop, a postharvest evaluation of the current integrated pest management (IPM) plan for an orchard is in order. Spray application times, additional control activities and monitoring records prior to control and after should be reviewed. Orchard sanitation remains the cornerstone of pest management in pistachios, as it is proven to reduce numbers of navel orangeworm (NOW) in...

Read More

Study Finds American Grown Pistachios Contain Melatonin


An analysis conducted by researchers Dr. Jack Losso and Millicent Yeboah-Awudzi at Louisiana State University in partnership with American Pistachio Growers found that American pistachios contain significant amounts of melatonin, much higher than most fruits, vegetables, cereals, legumes and seeds. Melatonin Research in Pistachios Melatonin is a hormone produced by the pineal gland to regulate the body's internal biological clock and control daily sleep cycles. Melatonin supplements are commonly used by people with insomnia or with irregular sleep patterns which may arise from frequent travel or irregular work schedules, among other causes. The study was significant due to the fact it showed pistachios contain relatively high levels of melatonin compared to other foods and that researchers identified two protective bioactive compounds, lunasin and the Bowman-Birk Inhibitor, which have anti-inflammatory, anti-angiogenic activity that may help manage type 2 diabetes. Additionally, researchers proposed that these compounds together, with other protective compounds found in pistachios, such as lutein, zeaxanthin...

Read More

Don’t Forget Winter Sanitation


First flight numbers of navel orangeworm (NOW) in the Sacramento Valley overall looked low to moderate in pheromone traps, but there are some exceptions to that, according to Emily Symmes, UC Cooperative Extension Area IPM advisor, Sacramento Valley. The more severe winter could have kept first flight numbers down, Symmes continued, but also there was a more prolonged spring flight due to relatively cooler temperatures and numerous rain events, which may have appeared as lower overall abundance in NOW traps during the early flights. “I don’t necessarily think this is a low pressure year from an overall perspective, especially now that we are seeing significant numbers in the third flight” Symmes said. Third and fourth flights, if a fourth flight arrives, are always larger as a result of population build-up, and heat units increasing into the summer reduce the generation time, Symmes said. Trapping  Many growers and pest control...

Read More

-Advertisement-