Download - Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

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Page 1: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids as a Value-Added Product

Dan M. Sullivan

Soil Scientist

Crop & Soil Science

Oregon State University

Biofest. Chelan, WASept, 2018

Page 2: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Principles

• Product knowledge (today’s topic)

• Know your region

• Take advantage of local alliances

• Listen to the plants\crops

• Listen to the customers

• “Bloom where you are planted”

Page 3: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Product knowledge

• Think in terms of the customer

• Biosolids are usually a replacement for an existing fertilizer or soil amendment

• How does your biosolids product compare to competition?

Page 4: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

How biosolids are unique

• Biosolids have more consistent properties than manure or most competing organics

• Biosolids are low in soluble salts (electrical conductivity)

• Biosolids are an especially effective amendment to increase soil organic matter

Page 5: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

How biosolids are unique

• Composts. Applied at high rates, biosolidscomposts acidify soil. Manure or yard debris composts increase soil pH. So biosolids compost is ideal for rhodies…

• High pH soils (calcareous). Biosolids are effective source of metal micronutrients like zinc.

Page 6: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

New publication from OSU: Interpreting compost analyses, available online Oct 2018

Page 7: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Research review

1. Nutrients in biosolids

2. Balance of nutrients supplied by biosolids vs. crop needs

3. Persistence of of biosolids organic matter in soil

4. Biosolids compost for ornamentals

Page 8: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Pacific NW Extension publication 508-E

Page 9: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Nutrients

Page 10: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids: fertilizer replacement value of nutrients

Page 11: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Nutrient balance

• Biosolids supply more P than crops need

• Long term application of biosolids builds soil P, sometimes to excessive levels

Page 12: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Agronomic and environmental interpretations of soil test P.

Page 13: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Soil phosphorus (Olsen P test) after five biosolids applications (over 16 yr)

Douglas County, WA

Page 14: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

East of Cascades: long term research. New publication: PNW 716.

Page 15: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Soil organic matter (carbon or C) after five biosolids applications (over 16 yr)

Douglas County, WA

Page 16: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Long term findings: dryland wheat

• Biosolids increased soil organic matter (4 to 6 inch depth) by more than 50%

• Biosolids enriched supply of immobile nutrients (e.g. P and Zn)

• Biosolids were an effective replacement for N fertilizer for the crop following application

• Soluble salt accumulation was minimal

• Wheat grain yield was sometimes increased by biosolids (compared to commercial N fertilizer)

Page 17: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Comparing carbon sequestration of biosolids vs. other organicsPendleton, OR. 10-yr trial

Page 18: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids were most effective C input to sequester C in soil

Page 19: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids effective pasture input at 6-8 inch rainfall dryland site

Echo, OregonCity of Portland biosolids

with biosolids

no biosolids

Page 20: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids effective pasture input at 6-8 inch rainfall dryland site

Echo, OregonCity of Portland biosolids

Page 21: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Biosolids compost vs. yard debris compost trial, western Oregon

Page 22: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Year

2009 2010 2011 2012

So

il p

H (

1:1

me

tho

d)

5.0

5.2

5.4

5.6

5.8

6.0

6.2

6.4

Biosolids compost acidified soil

Biosolids compost

Yard debris compost

No compost

Page 23: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Acid-loving plant (Pieris japonica)

yard debris

compost

biosolids

compost

June 2014. Six years after transplanting

Page 24: Biosolids as a Value-Added Product - Aventri · Biosolids as a Value-Added Product Dan M. Sullivan Soil Scientist Crop & Soil Science Oregon State University Biofest. Chelan, WA Sept,

Thank [email protected]