Pest management for Shothole and Scab
Joe Connell addresses symptoms, management and treatment of fungal diseases shothole and scab
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Blog
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Climate & Management Considerations for Future Almond Orchards
Recent years have brought hot temperatures, heat waves, droughts and rain that have broken records. What does that mean? And what can we do to plan for it in almond orchards? Continue reading
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Disease management decisions in low-income year(s)
Several steps must all be done correctly for fungicide sprays to be most effective. Missing one step can severely limit the outcome (and cost the grower a lot of money). Continue reading
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Be Careful with Almond Variety-Rootstock Selection
Almond variety and rootstock selection is a quarter century investment. Evaluating the compatibility of different varieties and rootstocks together is critical to deciding whether a combination will be successful. Continue reading
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April Walnut Orchard Management Considerations
Read this article for walnut orchard management tasks to keep in mind in April. Continue reading
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Potassium Management Options in Prunes
A prune grower’s potassium (K) program can be one of the most critical components of an orchard management plan. Read for more considerations when making a potassium plan. Continue reading
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Efficacy of a Hull Split Spray vs. Sanitation for NOW Control
When more NOW larvae make it through the winter, more egg laying will occur next season regardless of what else you do. If you have scarce dollars to spend on NOW control, spend them this winter when they will do the most good in a sanitation program. Continue reading
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Winter Chill, Dormancy and Walnut Management – 2023-2024 Update
For three winters, we have been studying the impact of a number of dormancy breaking treatments to give growers tools to deal with low chill winters. This previous winter-spring, we put Dormex at 2% and 4% head-to-head. Continue reading
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2024 Emergency Use (Section 18) of Kasumin® 2L Approved for Prevention of Almond Bacterial Blast
Pseudomonas syringae pv. syringae is ubiquitous in orchards, so bacterial blast can develop whenever environmental conditions are right (freezing or near-freezing and wet). While copper sprays have been used to protect trees from bacterial blast, resistance is common in P. syringae populations throughout the state. Unfortunately, it is no longer effective for controlling bacterial blast in some orchards, however, Kasumin® 2L has been shown to be effective. Continue reading
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September Prune Orchard Management Considerations
Read this article for prune orchard management tasks to keep in mind in September. Continue reading
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Preventing Bacterial Blast Damage in 2024
In 2023, the cold, wet weather during bloom and leaf-out resulted in bacterial blast damage in many Sacramento Valley almond orchards. If conditions this year are cold and wet during bloom, we may see a recurrence of blast: make a plan now to keep blast damage to a minimum. Continue reading
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2021 Pistachio Irrigation: Mitigation Strategies for Drought
Pistachios are known for their ability to withstand drought, but the severity and length of a dry spell can result in high percentages of blanks, low shell splitting percentages, and reductions in overall yield. Read this article for strategies for managing drought in your pistachio orchard. Continue reading
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Walnut Winter Management UCCE Resources
If you haven’t already, look at your orchard operation: take some time to Stop, Think, Observe, and Plan. Read for an overview on resources on topics on spray calibration, sanitation, codling moth mating disruption, pests, and more. Continue reading
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Wet winter concerns: Phytophthora and waterlogging
Excessive water, caused by rain, flooding, or even overirrigation, is a challenge for orchards and can cause two very different problems: waterlogging and Phytophthora infection. Given that we had bountiful rain this winter and orchards with standing water were common, continuous monitoring and collaboration with your PCA or farm advisor will be increasingly valuable. Continue reading
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Hull tights caused by water stress
Hull split has begun, indicating harvest is imminent. Drought conditions, heat waves, and timing with other orchard activities can make irrigation challenging. Water stress can interfere with hull split, and if severe, can result in hull tights. Continue reading