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Pest/Disease Management

California Walnut Board 2019 Production Research Priorities

Walnut production research goes back over five decades. Each year, the California Walnut Board’s Production Research Committee recommends projects for funding based on industry’s short and long term needs. This year, the CWB members approved a total of 23 projects totaling $1.69 M for the 2019-2020 crop year. Production research continues to be fundamental to addressing production challenges in the …

Could CA Farmers Lose CalEPA & Science-Based Pesticide Regulation?

Anti-pesticide sentiment has never been more prevalent, as California courts and anti-agricultural organizations frighten the public with non-science based claims of the harmful effects of crop protection materials such as glyphosate.  What farmers need to understand though now, is that much more than glyphosate is currently at stake.  The legislature is now being pressured to change the whole pesticide regulatory …

Increase of Early Almond Varieties Demands Evolution in the Industry

More Early Almond Varieties Demands Evolution within the Industry

One of the main concerns with recent almond acreage trends is in the exponential growth of earlier harvesting varieties and how the how that will impact early stockpiling at hulling and processing facilities.  Growers obviously want to harvest their crops as soon as possible, but Navel Orangeworm damage doesn’t stop as soon as the nuts leave the orchard.  Watch this …

2018 USDA California Almond Nursery Sales Report

Almond Survey

The primary objective of the California Almond Nursery Sales Survey is to estimate future almond acres based on the number of almond trees sold for new plantings. This report summarizes data supplied by California nurseries throughout the State who sold to almond growers for commercial plantings. Results from this survey will be used in conjunction with the Almond Acreage Survey …

New Ways of Managing Plant-Parasitic Nematodes Under Study

Andreas Westphal

Walnut production is most productive on deep-rooting uniform soils with good water-holding capacity. Such soils are also conducive to infestations of plant-parasitic nematodes. Currently, the key pest of concern in walnut plantings is root lesion nematode (Pratylenchus vulnus). In California, this nematode is wide-spread in walnut producing areas and is estimated to be present in almost 85% of walnut orchards. …

Sterile Insect Facility to Aid Growers with Navel Orangeworm Management

Sterile Insect Facility to Aid Growers with Navel Orangeworm Management

Researchers and growers are tackling the formidable tree nut pest Navel Orangeworm from all fronts.  One method underway is in utilizing the same sterile insect technology and facility that eradicated pink bollworm from the cotton industry years ago.  There have been some challenges in adapting the system for Navel Orangeworm, as shared by Bob Klein from the Pistachio Research Board; …

Concern for Navel Orangeworm Mating Disruption

Concern for Navel Orangeworm Mating Disruption

Navel Orangeworm has become a serious pest in California for many agricultural commodities, especially for tree nuts.  Mating disruption technology has proven to be a critical tool in managing this pest; however some growers may have concerns with utilizing this technology on their farms.  Check out this brief interview with Brad Higbee, now Field Research & Development Manager for Trece, …

New Hazelnut Pest Management Guide for the Willamette Valley

Oregon State University just released their 2019 updated hazelnut pest management guide for growers in the Willamette Valley, including pesticide and fungicide use guidelines (products, rates and application timing). The chemicals, formulations, and rates listed for insect, mite, and disease control are among the best recommendations based on label directions, research, and orchard use experience. Only a thorough knowledge of …

ABC Funds $1 Million in Navel Orangeworm Research

orangeworm research

The Almond Board of California recently approved funding of $1 million dollars of a Navel Orangeworm Sterile Insect Technique research project. This is the single largest production research project ever funded by the Almond Board. The Almond Board of California (ABC) has been funding Navel Orangeworm (NOW) research for over twenty years and has made great progress in determining various …

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