Looking Back At 2014 Walnut News
January 6, 2015 As we enter 2015, it is important to reflect on last season’s crop and plan for the upcoming year, according to Emily Symmes, University of California Cooperative Extension Area IPM Advisor for the Sacramento Valley.
Looking back at 2014 issues:
– Botryosphaeria (Bot) canker and blight continue to be a major concern for walnut growers.
– Scale populations have been on the rise in many orchards in recent years. The reported association of scale with Bot has resulted in increased management inputs for these pests.
– Higher than usual levels of navel orangeworm (NOW) were detected at harvest in many areas because of early season warm conditions that led to a larger fourth generation flight late in the season and an extended harvest period in fall.
– UC research is ongoing into these issues, and the results of 2014 studies will be made available in the coming months at UCCE walnut meetings and upcoming newsletter issues. The latest information can be obtained by contacting your local UCCE farm advisor. The Walnut Year-Round IPM Program is a valuable resource for timing monitoring and pest management activities throughout the year.
Source: Sacramento Valley Walnut News
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