OMM November 2021 Archives - West Coast Nut


True Bugs No Longer an ‘Occasional’ Pest

There was high leaffooted bug populations in almonds this year and those higher numbers contributed to early-season nut drop and significant crop damage at harvest. UCCE IPM advisor Jhalendra Rijal said he considered LFB populations in almond orchards were higher than normal in April through May. Timing of the feeding by from piercing, sucking insects determines if the immature nuts drop from the tree or if the feeding causes damage to the kernel, causing rejection by processors. Leaffooted bugs are a species of true bugs that have mouth parts that...

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Time to Think about Pollination Contracts

Yes, the holidays aren’t here yet, but that does not mean almond growers and orchard managers can’t get a jump on securing pollination services for the 2022 bloom. Almond Board of California makes several important points about communications with bee keepers to discuss requirements and expectations for pollination services. In addition to pesticide applications when bees are present, both parties should reach an agreement on responsibilities prior to bloom. There is a sample template on the Project Apis. M website that growers can...

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Mulching Pistachios has Benefits and Challenges

Taking advantage of an oversupply of wood chips from orchard removals gave a Central Valley pistachio grower an opportunity to improve soil health in his orchards. Jeb Headrick said the wood chips spread on the orchard floor helped retain soil moisture during the heat of the summer and created an environment where soil microbes thrived. Adding mulch to his orchard floor, Jeb Headrick said, was not without challenges.

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Freeze Damage in Walnut Orchards is Possible

Erratic patterns of freeze damage in older walnut orchards and typical damage in young orchards over the past two fall seasons is being linked to rapid declines and swings in temperatures. Stanislaus County Orchard Systems Advisor Kari Arnold explained in the county’s recent fruit and nut production newsletter that while green walnut tissue is highly susceptible to freeze damage, dormant walnut tissues can normally handle temperatures in the low 20s. However, she said, some orchards experienced temperature swings from 60 degrees F to -28 degrees F within short periods of...

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