Pest Archives - Page 5 of 7 - West Coast Nut



Increasing Evidence of Pacific Flatheaded Borer Attack in Walnut Orchards in California

Background and Pest Status Flatheaded borer is a larval stage of one specialized group of beetles (Insect family-Buprestidae), which are glossy iridescent colors. The name ‘flatheaded’ comes from the enlarged and flattened shape just behind the head of the larval stage (Fig. 1) of the beetle (Fig. 2), and the flatheaded borer species that has become a major issue in walnuts is Pacific flatheaded borer (PFB), Chrysobothris mali, which is known to present in the western states such as Washington, Utah, Oregon, California. A similar type of borer species causing serious damage in various nurseries and other fruit and trees...

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Walnut Pest Management: Navel Orangeworm and Codling Moth

There are a few pests that have reached what seems like celebrity status in the tree nut industry, with codling moth and navel orangeworm being household names for walnut growers. With research is continuing on how to best eliminate these pests, there are still methods and products that can help with the complications of infestation. Navel orangeworm and codling moth are featured here in this first part of a two-part series focusing on pests in walnut orchards. Navel Orangeworm Navel orangeworm has garnered a lot of attention, as growers and industry personnel continue to battle this pest. When mummy nuts...

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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...

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LFB in Control for Almonds and Pistachios

When you see adult leaffooted bugs (LFB) in your almond or pistachio orchards, it is time to take action. There is no established threshold for economic damage caused by this piercing-sucking pest, said Kris Tollerup, UC Cooperative Extension area Integrated Pest Management advisor. Traps and lures for LFB are still being evaluated. Visual observation of LFB in an orchard should prompt treatment, advisors said. LFB This large insect pest is a native of California, and has been found in the San Joaquin Valley from Butte to Kern counties. While LFB may be found in most valley locations, there are specific...

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Protecting the Roots: Nematode Management in Perennial Crops

The agriculture industry often has adversaries, whether they’re pests, diseases, inclement weather, or various regulations. On the flip side, it seems that every year the industry takes progressive steps to effectively handle or work within all those constraints. The problem with nematodes in the soil is no exception, and farmers and researchers work together to battle these parasites. Nematodes in the Orchard: A Brief There are thousands of species of nematodes, existing in nearly every ecosystem reaching from the tropics to Antarctica. These microscopic roundworms exist in beneficial and harmful varieties, with the plant-parasitic nematodes being a significant concern to...

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