Weekly Summary for Grapes

Last Updated:  July 21, 2008

Next Update: July 28, 2008

Grape Growing Degree Days – During the past week, temperatures were near normal in the San Joaquin Valley but slightly below normal to normal in other grape growing regions.  Growing degree-days range from 2 days ahead to 10 days behind normal.  In 2008, we are 2 to 6 days behind 2007.    

Grape Powdery Mildew Index – The PMI index is currently in the "low" pressure range.  The PMI will be updated in March 2008. 

Bloom Time Projections Bloom time projections & actual bloom time dates in the San Joaquin Valley and the Coastal Areas for 2008 are posted. 

Grape OLR Treatment Window The treatment windows for OLR has been posted for Fresno and Madera County based on biofix dates. 

 

 

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