Test PB Collection: FTE

Vineyard Irrigation Scheduling Worksheet (Interactive) This worksheet provides the means to calculate the amount of water to apply in a winegrape vineyard based on the deficit irrigation strategy fully detailed in the publication "Deficit Irrigation of Quality Winegrapes Using Micro-Irrigation Techn...

When to start irrigating Vine leaf water potential (LWP) is an indirect measure of vine water status that is usually monitored weekly prior to the onset of irrigation. LWP is most accurately measured with a pressure chamber device. Units of LWP are negative bars or megapascals (MPa).

Emitter Sampling for Distribution Uniformity DeterminationDrip emitters rarely discharge water at the exact specified rate or uniformly across the irrigation system. For example, a 0.5 gallon per hour (gph) dripper may not actually be discharging at 0.5 gph.  Manufacturing differences, clogging, and…

How to Calculate Distribution Uniformity and Adjust Irrigation Requirements Emission uniformity is expressed as a percentage, and is a relative index of the variability between emitters in an irrigation block.

Interactive Emission Uniformity Calculator Emission uniformity is expressed as a percentage, and is a relative index of the variability between emitters in an irrigation block.

California Vineyards Prepare for 2021 Drought Conditions, UC and Lodi Growers Hold Water Management Workshops - excellent write up plus link to workshop videos.

Christopher Chen, Integrated Vineyard Systems Advisor UC Cooperative Extension Sonoma, Mendocino, & Lake Counties (707) 671-6614 codchen@ucanr.

Common Grapevine Pests: Common Grapevine Diseases...

Industry Reports and Newsletters Gomberg-Fredrikson Report Gomberg, Fredrikson and Associates, 35 Maple Street, Sonoma, CA 95476, PHONE (707)-940-4744. This wine industry marketing report is issued monthly to firm clients.

Cost StudiesSample Costs to Produce Winegrapes, Russian River Valley, 2017 Monitoring Insects with Sticky TrapsRetail Sources for Yellow Sticky Traps, March 2020Retail Sources for Red Delta Traps and Lures for Vine Mealybug and European Grapevine Moth, March 2020 Vine Decline and DisordersPinot Leaf...