21 Acres Soil Assessment

1
21 Acres Soil Assessment

• Team Martin Herrin, Melody Hearten-Johnson, and
  Aileen Ponio
• Water and Sustainability
• BIS 392

2
Location 21 Acres

• 21 Acres includes a bio-diverse farmstead with
  trails for physical activity, interpretive
  educational signage, and cultivated farm plots
  used to demonstrate sustainable and organic
  farming practices.
• 21 Acres is committed to making local,
  sustainable-grown food a cornerstone of healthy
  lifestyles and communities.

3
Soil Tests

• Texture
• PH
• Phosphorus
• Potassium
• Nitrate
• Ammonia Nitrogen
• Humus
• Nematodes

4
Sample Sites
Field Sample Site
1
A B C

• A
• B
• C

1

• A
• B
• C

3
1
2
5
Textural Analyses
Weight Wet (g) Weight Dry (g) Bulk Density (g/ml) Void Space () Soil Saturation () Texture
Field 1          
Site A 171.7 102.6 0.51 81 44 Sandy Loam
Site B 181 107.1 0.54 79 47 Sandy Loam
Site C 163.9 85.9 0.43 84 46 Sandy Loam
           
Field 2          
Site A 136.1 89.7 0.45 83 27 Loam
Site B 144.5 99.7 0.50 81 27 Silt Loam
Site C 158.7 73.1 0.37 86 48 Sandy Loam
           
Field 3          
Site A 162.6 120.4 0.60 77 27 Loam
Site B 181.1 119.9 0.60 77 40 Silt Loam
Site C 181.5 118.2 0.59 78 41 Sand
6
pH

• Results
• - Field 1
• Site A - pH 5.0 - 5.2 Site B - pH
  5.2 Site C- pH 5.1- Field 2
  Site A - pH 5.8 - 6.2 Site B - pH 6.2 -
  6.4 Site C- pH 6.0 - 6.2- Field 3
• Site A - pH 6.0 Site B - pH 5.8 -
  6.2 Site C - pH 6.0

7
Phosphorus

• Results
• Field 1 Site A - 25 lb/a Site B - 75 lb/a Site
  C - 75 lb/a
• Field 2 Site A - 25 lb/a Site B - 25-50
  lb/a Site C - 75 lb/a
• Field 3 Site A - 75 lb/a Site B - 75 lb/a Site
  C - 25 lb/a
• Phosphorus is recorded in pounds per acre (lb/a)

8
Potassium

• Results
• Field 1 Site A - 160 lb/a Site B - 180
  lb/a Site C - 150 lb/a
• Field 2 Site A - lt100 lb/a Site B - lt120
  lb/a Site C - lt100 lb/a
• Field 3 Site A -110 lb/a Site B -130 lb/a Site
  C -120 lb/a
• Potassium is recorded in pounds per acre (lb/a)

9
Nitrate Nitrogen

• Results
• Field 1
• Site A 40 pounds per acre
• Site B 40 pounds per acre
• Site C 40 pounds per acre
• Field 2
• Site A 20 pounds per acre
• Site B 40 pounds per acre
• Site C 20 pounds per acre
• Field 3
• Site A 40 pounds per acre
• Site B 40 pounds per acre
• Site C 20 pounds per acre

10
Presence of Nitrate Nitrogen

• Nitrogen is essential the success of any crop.
• We observed Rhizobium bacteria(?) on the crop
  roots at 21 Acres.

11
Nematodes

• We discovered Nematodes in the soil at 21 Acres!
• Nematodes are an excellent source of
  plant-available Nitrogen production in the soil.

12
Ammonia Nitrate

• Results
• Field 1
• Site A Very Low
• Site B Very Low
• Site C Very Low
• Field 2
• Site A Very Low
• Site B Very Low
• Site C Very Low
• Field 3
• Site A Very Low
• Site B Very Low
• Site C Very Low

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Humus

• Results
• Field 1
• Site A 1
• Site B 1
• Site C 2
• Field 2
• Site A 1
• Site B 1
• Site C 1
• Field 3
• Site A 1
• Site B 2
• Site C 2
• Scale
• 1-low, 2-Medium, 3-High (Agricultural soils)
• 2-Low, 3-Medium, 4, high (Garden greenhouse
  soils)
• 3-Low, 4-Medium, 5-High (Organic soils)

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THANK YOU!Eat some dirt and Hug a tree, Team
Dirty