geo 266 final presentation
TRANSCRIPT
Wine Grape Suitability TestBy Nick Becker
A small landowner at 325 NW Stringtown Road, Forest Grove, Washington County, Oregon has approximately 17 acres and she has decided to designated it to agriculture rather than developing on it. She wants to know what, if anything, will grow best and possibly return a yield on her investment. She has tried to lease the property in the past; however, no one was interested because the slope was, purportedly, too steep to excavate.
Build a Model & Repeat
Model defines area on property best suited for growing wine grapes, based on research.
Model can be classified/reclassified for additional crop types; test can be repeated.
Approach
Forage crop (hay, clover) adding lime/nitrogen to soilcost prohibitive?
Methods
Materials& Source Data
Metro 10M LiDAR DEM
USDA soils data
Classification based on outside research
Property boundary
Identify property
Tax lot boundary for 325 NW Stringtown Rd., Forest Grove, OR
~17 US Acres
Land Value $181,500
Building Value $70,100
Washington County Tax Lots
http://www.oregonlive.com/foodday/index.ssf/2011/05/the_dirt_on_willamette_valley.html
Pinot Noir grapes prefer...
to be South facing
planted on Moderate slopes
Provided by Data
Digital Elevation ModelSlope
Moderate slope[+0]
Low, high slope [+1}
Solar Radiation
90-270 degrees (SE, S, SW [+0] )
271-89 degrees (NW, N, NE [+1] )
Metro 10M DEM LiDAR Layer
http://www.oregonlive.com/foodday/index.ssf/2011/05/the_dirt_on_willamette_valley.html
Pinot Noir prefers...
Silt loams that are moderately drained.
Provided by Data● Soil Type (1919, 1982, current)
○ Laurelwood silt loam [+0]
○ Helvetia silt loam [+1]
○ Cornelius and Kinton silt loam [+2]
● Drainage
○ Poorly drained [+1]
○ Moderately drained [+0]
○ Well drained [+1]
USDA Soils Layer
“Brown and fertile Laurelwood is the region's key loess-type soil.”-- Oregonlivehttp://www.oregonlive.com/foodday/index.ssf/2011/05/the_dirt_on_willamette_valley.html
Certified Crop Advisor
cornell.edu
Cluster Sun Exposure and Quercetin in Pinot Noir Grapes
ajevoline.com
Sun Exposure on Vineyards
calwineries.com
Effect of Grape Bunch Sunlight Exposure and UV Radiation...
sciencedirect.com
Wine Soils II: Cornelius Gets Short Shrift
enobytes.com
Classification Sources
Assign lowest value to best conditions
Soil type + Slope + Drainage + Solar radiation
Raster Calculator
Total
ModelModel
Findings
Slope Map
Solar Radiation Map
Soils Map
Final Suitability Map w/o focal stats
Final Suitability Map w/ focal stats
Final Suitability Map w/ rows
- “Row length should be shorter than 1000 foot long. A 300-600 foot long row are common. “
- 15 ~400’ rows
- ~26,000 sq ft
- .6 acre for vines
- 1.2 - 6 tons of grapes (@2-10 tons per acre)
- 72- 360 cases of wine
http://www.winepros.org/wine101/viniculture.htm
http://www.pawpaw.kysu.edu/Viticulture
Considerations
After Completing Lab 6 ‘Suitability Test’
Weighted Overlay: Soils, solar, slope; Could not assign a percentage of influence to each raster, based on how much importance (or weight) each should have in the final suitability map. Is slope, soil, solar radiation of equal importance? 33%
Con/Majority Filter: Best area to place rows
Raster to Poly
Conclusion
The property at 325 NW Stringtown Rd, Forest Grove, Washington County, Oregon was determined to be highly suitable for growing wine grapes as determined by a classification of DEM based slope, aspect and solar radiation data as well as USDA soils data. A total of .60 acres are available for optimal growth. This test may be repeated with some adjustments to determine suitability for other local crop types. According to a source, the property can be excavated with a degree of success.
Thank you.Susan Kane-PhillipsGary PhillipsRebecca BoydChad LongBryan KilburnGreg Becker