Pest Archives - Page 5 of 17 - West Coast Nut



Potential Effects of Drought and Climate Change on Insect Pests Including Navel Orangeworm

Climate change is the long-term statistically significant change in climate parameters due to increases in greenhouse gas (GHG) emissions in the earth’s atmosphere, including carbon dioxide (CO2). Increased temperatures, increased intensity and frequency of extreme events such as drought and flood as well as increased precipitation variability are examples of climate change. These parameters can have significant impacts on agricultural production and pest management, among other broader implications. Since temperature is most strongly related to insect pests, we will discuss the effect of increased temperature on insect pests and then present a navel orangeworm case study in a later part...

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Plant Nutrition Benefits Growers with Pest Management Plans

The integration of nutrient management is essential to an integrated pest management (IPM) plan. All my career, I have tried to highlight nutrient management as an environmentally sustainable and economically viable resource for agriculture. I truly believe in the potential for good nutrient management to aid us in the control of pests in our crops. With increasing regulatory and environmental challenges facing agriculture, we need to utilize good agronomic science in our consulting practices. Managing the inputs we depend on can go a long way in feeding an ever-increasing population.   Importance of Potassium We know that potassium (K)...

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Managing Burrowing Rodents in Walnut

Research updates for burrowing rodents provide walnut growers with a more effective set of strategies and tools for damage prevention. Burrowing rodents typically found in California walnut orchards include California ground squirrels, pocket gophers, voles, roof rats and deer mice. These rodents are found uniformly throughout the state, with most walnut orchards experiencing infestations of at least one species. Exclusion Exclusion strategies in rodent management are ways that growers can prevent rodent pests from physically entering a protected area through the use of fencing and other methods. Research conducted by Roger Baldwin, a UCCE wildlife specialist in the Department...

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Keeping Rodents and Bird Numbers in Check in Hazelnut Orchards

Since man first began growing his own food, animals have made it a habit to help themselves to his crops. Controlling rodent and bird pests in hazelnut orchards is a constant battle. Unfortunately, there is no quick and easy fix. Instead, it’s a long-term issue that requires constant vigilance to keep chewing, gnawing, nut-eating animal pest numbers in check.   Mice and Field Voles Rodents are one of the most destructive mammal pests to hazelnut trees. Small but mightily damaging, mice and field voles (sometimes called field mice) tunnel around the base of trees and gnaw at the bark of...

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Is Navel Orangeworm a Candidate for Area-Wide Integrated Pest Management in California?

Under integrated pest management (IPM), crop fields are considered interconnected agroecosystems where long-term pest/damage prevention is best achieved through a combination of biological, mechanical, cultural and chemical controls (Stern et al. 1959). Area-wide control refers to a systematic approach to quarantine and eradicate pests, where total pest management over an entire geographic area is critical, since small fractions of an insect population left uncontrolled can promptly reverse the benefits of greatly suppressing the main pest population in a large area (Knipling 1960). The challenge to IPM practitioners is that while independent operators focus on individual fields or orchards, many agricultural...

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