Author Archives: Franz Niederholzer

About Franz Niederholzer

Franz Niederholzer is a University of California Cooperative Extension pomology farm advisor for Yuba, Sutter, and Colusa Counties.

Good Spray Coverage: Watch the Air

Written by: Franz Niederholzer, UCCE Farm Advisor, Colusa and Sutter/Yuba Counties and Luke Milliron, UCCE Horticulture Intern Good spray coverage is vital to effective pest control.  Nowhere is this truer than for NOW control at hull split.  Excessive sprayer speed kills spray coverage, especially in the tree tops.  But is there a simple way to figure out […]

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Navel orangeworm management at harvest: When, what, & how to get the best results

Franz Niederholzer, UCCE Farm Advisor, Colusa & Sutter/Yuba Counties; Emily Symmes, UC IPM Area Advisor, Sacramento Valley Almond nuts become vulnerable to navel orangeworm (NOW) damage at hull split.  In the south Sacramento Valley this year, Non-pareil hull split is expected in the last week of June, about the same time as last year, based […]

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After a tough year, make key irrigation maintenance a priority.

Written By: Franz Niederholzer, UCCE Farm Advisor, Colusa/Sutter/Yuba Counties Despite strong nut pricing, the drought is making 2014 a very tough year for growers, their trees, and in many cases, their irrigation systems.  Low quality irrigation water, potentially stressing trees and irrigation systems, was/is applied to many orchards this year that normally received higher quality […]

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