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Split hulls on a walnut tree
Semios VMB trap
Pest Management

June 27, 2022

How to Monitor Vine Mealybug (VMB)

Vine mealybugs (VMB) are one of the most prolific mealybugs found in California. A single female can lay upwards of...

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2022 Hull Split Forecast Regional Map
Pest Management

June 8, 2022

2022 Navel Orangeworm Management Guide (+ New Hull Split Forecast)

Navel orangeworm (NOW) is a highly damaging and challenging pest to manage for California almond and pistachio growers. In this...

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Map of California, showing the average year-to-date navel orangeworm trap catches
Pest Management

May 11, 2022

2022 Navel Orangeworm (NOW) Update

Semios started monitoring navel orangeworm (NOW) activity for the 2022 season throughout the Central Valley in late February this year,...

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Pest Management

October 21, 2021

Regional Codling Moth Emergence Patterns – Spring 2021

Management of codling moth begins in the spring soon after the emergence of adults from the overwintering generation. Shortly after...

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Pest Management

October 21, 2021

2021 California Red Scale (CRS) Update

This year, we’ve been hearing from citrus growers that their observations from their field scouting are not lining up with...

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Pest Management

May 11, 2021

2021 Navel Orangeworm Update

As pest development progresses, here are some answers to your top questions related to Navel Orangeworm (NOW) activity.

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Semios pheromone dispenser in an almond orchard during bloom
Pest Management

December 23, 2020

Understanding Pheromones and Mating Disruption

We’re going back to the basics of mating disruption and answering some of the most frequently asked questions about mating...

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Trap hanging in an apple orchard during bloom
Pest Management

May 29, 2020

Site Specific Codling Moth Population Predictions

Is it time to rethink conventional codling moth models? Find out why a ‘one size fits all’ approach to pest...

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Semios pheromone dispenser in an almond orchard
Pest Management

July 15, 2019

What Is Variable Rate Mating Disruption?

A common pest management tactic in agriculture that deploys synthetic pheromones to interfere with the mating process of certain troublesome...

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