Newsletter Archives - Page 4 of 42 - West Coast Nut



Drones for Bird Control in Pistachios

Pistachio growers, focused on preventing crop losses due to crows and ravens, have employed various noisemaking and scaring devices and have even paid shooters to keep crows out of their orchards. Drones may become the next tool used by pistachio growers to protect their crop from crows and ravens. Crows are the main culprit in pistachio orchards, feeding in large numbers and moving from orchard to orchard. Page Klug, a USDA research wildlife biologist and project leader at the North Dakota Field Station, isn’t working with pistachio-craving crows, but she is conducting research on keeping mixed flocks of blackbirds out...

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Metabolic Resistance on the Rise in Some Weeds

Dealing with herbicide resistance in weeds means understanding not only target site resistance, but also metabolic resistance, a more recent discovery by weed scientists they say can present a major challenge in the future. In a Take Action webinar, University of Illinois Crop Science professor Pat Tranel explained the importance of understanding metabolic resistance in weeds. Take Action is an education platform designed to help farmers manage herbicide, fungicide and insect resistance. The goal is to encourage farmers to adopt management practices that lessen the impacts of resistant pests and preserve current and future crop protection technology. Herbicide resistance...

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Monitor Early for Mites and Predators in Walnut

Spider mites last year were a significant concern in some walnut orchards, prompting experts to advise monitoring early, particularly in walnut orchards that demonstrated a history of mite problems. Typically, mites in nut orchards can best be addressed by allowing naturally occurring predator populations to build and control those mite pests. But early in the season, mites can be more of a problem, and treatment decisions should be based on monitoring beginning in early May. David Haviland, UCCE Entomology Farm Advisor in Kern County, drawing on experience largely on almonds in Kern Co., said treatment decisions for mites in walnuts,...

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Small Improvements Matter in Spray Applications

UCCE Farm Advisor Franz Niederholzer, speaking at the 2022 California Walnut Conference, noted that in the face of higher production costs and tighter markets, walnut growers need to focus on careful use of existing farming practices and new technologies to set them up for the best possible crop outcomes. “As margins get tighter, small improvements, while maintaining quality, matter,” he said. Spray innovation in field applications has moved at a faster pace than orchard spraying, in part, Niederholzer said, because margins are so thin. Sensor-triggered air blast sprayers have been around for decades. New-generation sensor triggered sprayer Smart Apply comes...

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Regulatory Issues Challenge Walnut Growers

Preserving crop protection products is one of the important issues facing the walnut industry. In his presentation at the 2022 California Walnut Conference, Joshua Rahm, director or technical and regulatory affairs for the California Walnut Commission said industry challenges also include cost of inputs, markets, transportation and water, not to mention MRLs. Rahm’s remarks about regulatory issues came during the first day of the California Walnut Conference in Yuba City. The walnut industry is facing more challenges than ever, with most outside of our control, Rahm said. In addition to the complex of supply chain issues affecting exports, increased global...

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