Where The Roundup Is: State's Map Shows Wine Regions That Use It

 

To see the interactive map, go to https://trackingcalifornia.org/pesticides/pesticide-mapping-tool. 

This example map above shows just wine grapes and one of the two main types of glyphosate.

FROM THE NEXT SCREEN, go to the OPTIONS section in the upper left. There you can select the year, crop, and/or chemicals individually or by groups (Carcinogens, for example) from pulldown menu bars.

HOW TO VIDEO 

For a complete how to, watch the video or the detailed instructions here.

You may also wish to explore other vineyard chemicals that are fungicides or paraquat.