Articles | West Coast Nut

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Nutrient Management of Zinc in Pistachios

By Sabrina Hill, Contributing Writer

Zinc is among the most likely deficient micronutrients for pistachios in the California growing areas, but there are ways for growers to monitor, prevent, and treat low zinc levels in the orchard. As summer progresses, growers should be considering leaf sampling to check for zinc deficiency in the orchard.   Author’s note: Information herein was collected from scholarly papers and presentations by University of California (UC) advisors Bob Beede, Brent Holtz, and Craig Kallsen.   Importance of Zinc Zinc is necessary for formulation of Auxin, which plays a role in cell elongation and the forming of chloroplast. It is...

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Nitrogen Calculator Optimizes N Use

By Almond Board of CA, Contributing Writer

Under the Irrigation Lands Regulatory Program (ILRP), Central Valley Water Quality Coalitions’ reporting requirements include farm evaluations, nitrogen summary reports, and a sediment and erosion plan. In high-vulnerability groundwater areas, growers are required to submit certified summary reports annually; in low-vulnerability areas, the report must be kept on-site and certification is not required.   It is important to comply with these requirements, as the Central Valley Regional Water Board is actively enforcing the program with heavy fines for growers who either have not signed up for a coalition or who have not submitted a Nitrogen Management Plan.

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Best Management Practices for Fungal Disease in Almonds

By Cecilia Parsons, Associate Editor

Fungal disease management in almonds requires year-round vigilance.   The overall process for integrated pest management of fungal diseases calls for knowledge about the life cycle of the disease, the crop and environmental triggers.   Emily Symmes, University of California Cooperative Extension (UCCE) Integrated Pest Management (IPM) advisor in the Sacramento Valley,  said actively assessing all stages of a fungal disease, monitoring and tracking weather patterns will help growers be proactive in disease management.   Speaking at the Mid Valley Nut Conference in Modesto, Symmes noted one more key components of a good IPM program is evaluation of fungicide treatments...

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1,000 Cankers Disease: Everything You Need to Know For Walnuts

By Mohammad Yaghmour, Area Orchard Systems Advisor Kern Co
and Elizabeth Fichtner, UCANR Advisor Tulare and Kings Cos

The walnut tree (Juglans sp.) is well known for its valuable wood and timber quality and its nutritious nut.  Different native species of walnut are an important part of the ecological system in North America.  Eastern black walnut (Juglans nigra) is native to eastern North America from the northeast in Vermont and southern Ontario to Minnesota and south to Florida.  It also ranges east from the Atlantic coast to central Texas except the Mississippi River Valley and Delta.  Juglans nigra has an important economic value estimated at more than $500 billion for its wood and timber alone.  Among the other...

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Almond Disease and Control

By Julie R. Johnson, Contributing Writer

From planting to maturity and crop production, almonds trees can be host to a plethora of diseases, be it bacterial, fungal, viral, parasitic or phytoplasmal. These diseases and how to control them was the topic of Dr. Jim Adaskaveg's presentation during this year's North Valley Nut Conference hosted by West Coast Nut in conjunction with the UCCE Butte/Glenn Counties Almond and Walnut Day at Silver Dollar Fairgrounds in Chico. Adaskaveg, professor and plant pathologist with the Department of Plant Pathology, UC Riverside, who specializes in foliar disease of almonds and other tree crops, shared the springtime diseases of almond that...

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Blight Control in Walnuts

By Julie R. Johnson, Contributing Writer

Blight's description “as any cause of impairment, destruction or ruin,” definitely applies to Xanthomonas arboricola pv juglandis (Xaj), a pathogen of Walnut Blight and the topic of Richard Buchner's presentation during this year's annual Walnut Trade Show hosted by West Coast Nut. Buchner, UCCE Orchards Advisor, Tehama County, said walnut blight caused by Xaj can cause significant crop loss and determining an orchard's risk is often a matter of guess work. “Three things are necessary for the disease to occur,” he explained, “pathogen, host and favorable weather. This is often referred to as the disease triangle.” One of Buchner’s “take...

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