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Grape Notes Blog

  • Figure 1. UCCE weather station with a 30-foot mast to measure the inversion condiitons.
    UCCE San Luis Obispo weather station network

    This new project is bringing some unique and very useful weather data to San Luis Obispo County. Twenty weather stations are planned for the County; at this writing 12 are installed and operating. An additional twenty stations are also planned for Santa...


    By Mark Battany
    Author - Water Management and Biometeorology Advisor
  • Figure 8. Tandem D8H crawlers pulling a large slip plow to thoroughly mix a stratified soil near Santa Maria. The result has been described as a
    Irrigation volume and frequency: soil, salinity and nutrient considerations

    Irrigation frequency and volume One fundamental decision that a grower needs to make is how frequently to irrigate a vineyard; either applying small amounts of water frequently, or larger amounts of water less frequently. This choice determines how...


    By Mark Battany
    Author - Water Management and Biometeorology Advisor
  • Figure 1. Cabernet Sauvignon in SLO County with magnesium deficiency symptoms.
    Spring Fever 2019

    Numerous vineyards throughout this region and elsewhere in California have displayed unusual leaf symptoms this spring, consisting of yellowing and/or bronzing of the leaf blades along with necrotic margins in some cases or even necrotic interveinal...


    By Mark Battany
    Author - Water Management and Biometeorology Advisor
  • Figure 1. Crop values for SLO and SB Counties combined in 2016. The total crop value for both counties was $2.34 billion. Source: SLO and SB County Ag Commissioner's Crop Reports.
    Realignment of Farm Advisor assignments serving San Luis Obispo and Santa Barbara Counties

    Funding levels for UCCE have been declining gradually for decades, resulting in decreasing numbers of Advisor positions. The recent and near future retirements of Advisors serving San Luis Obispo and Santa Barbara Counties has led our office to...


    By Mark Battany
    Author - Water Management and Biometeorology Advisor
  • Special issue of the California Agriculture Journal: The Sustainable Groundwater Management Act

    The recently published edition of California Agriculture is devoted entirely to the Sustainable Groundwater Management Act (SGMA) and how this important legislation is being addressed in many agricultural regions of the...


    By Mark Battany
    Author - Water Management and Biometeorology Advisor
Grape Notes Blog Articles

The Grape Notes Blog has replaced the previous Grape Notes Newsletter. You can view the Blog at the following website, and sign up to receive email notification of new articles:

http://ucanr.edu/blogs/GrapeNotesBlog/index.cfm

 

Articles that have been posted, in reverse chronological order:

2019:

Irrigation volume and frequency: soil, salinity and nutrient considerations

Spring Fever 2019

 

2018:

Realignment of Farm Advisor assignments serving San Luis Obispo and Santa Barbara Counties

Special issue of the California Agriculture Journal: The Sustainable Groundwater Management Act

 

2017:

Resistance to the QoI (Strobilurin) Fungicides in Grape Powdery Mildew on the Central Coast

Downy Mildew appearing in Central Coast vineyards

2016 update - Production and economic trends for SLO County vineyards

The Orange Slime is appearing again on pruning wounds

 

2016:

Grape Erineum Mite

The Driedfruit Beetle can exacerbate bunch rot problems

Planthoppers appearing in area vineyards

Vine mealybug identification posters

Vineyard floor management and frost risk

Red Blotch and the Threecornered Alfalfa Hopper

 

2015:

Weather and drought effects on the poor fruit set in 2015

Production and economic trends of Santa Barbara County vineyards, and comparison to statewide averages

Production and economic trends for SLO County vineyards

Managing irrigation water quality

The rise (and demise) of the UC Experiment Station at Paso Robles

Renovating vineyards affected by trunk diseases

Black Foot Disease in coastal vineyards

Pinot Leaf Curl appearing in Central Coast vineyards

Arrival of the 'Red Bug' to Central Coast vineyards