Effects of Cover Crops on a Northern California
Vineyard Ecosystem

Funding

Experimental Methods
Vineyard

Experimental Methods
Cover Crop Mixes

Experimental Methods
Cover Crop Fertilization

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Results
(3 Year Study)

Cover Crop N Content
1998-2000

Cover Crop Biomass
April, 1998

Cover Crop N Content
April, 1998

Weed Biomass

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Pocket Gophers
1999

Soil Microbial Biomass

Wine Quality

Cover Crop Costs per Acre
(Planted Every Row)

Are Cover Crops Sustainable?

Veraison Petiole Nitrate
1998

Bloom Petiole Nitrate
2001 (Post Experiment)

Approximate Cover Crop Costs
(Yr. 1 and Yr. 2+)