herbicide-free case studies

- CASE STUDY II -

SPOTTSWOODE ESTATE

Vineyard area:

45 vineyard acres

Site Characteristics:

Bale clay loam soils on western bench of St Helena

Tools/Equipment used:

Tractor
Spader
Self Powered Mower
ATV
Electro Static Sprayer
Air Blast Sprayer
Disc Harrow
Spring Tyne Harrow
Seeder
Undervine Mower
Rotary Disc Undervine Cultivator

Passes:

4 spray passes, 1 partial cultivation pass, 2 mowing passes

Organic Herbicides?

No

GRAZING?

Yes – in house flock of Navajo Churro sheep

Tillage?

Partial/minimal – season dependent

Weeds of concern?

None

Aesthetics?

We don’t find bare soil/clean cultivating aesthetically pleasing

Certification(s):

CCOF
Regenerative Organic (ROC)
Fish Friendly Farming
Demeter
B Corp
Napa Green Vineyard
Napa Green Winery
B Corp
TRUE Zero Waste
IWCA

COSTs:

Annual farming costs/acre $19,000

Weed Management Costs
Tractor w sprayer $60/pass 4x a year =$240
In-row mowing $100/pass 2x a year =$200
Sheep $100/”mow” 1x a year =$100

Yearly Total Mowing Cost/Acre =$540