Less than ½ inch particle size; lawn top dressing less than ¼ inch
Color
Odor
Texture
Uniformity
Dark brown to black
Earthy, no ammonia smell
Within the batch
Foreign Materials
Concern of heavy metals (biosolids), human pathogens (manure), and salts (manure and biosolids)
RawMaterials
Weed Seeds
Less than 1% and smaller than ½ inch size
Test by germinating some material
Consistency
Between different batches
Evaluating the Quality of Organic Amendments - What to Look For
Melissa Kreider
Created on November 6, 2025
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Transcript
Less than ½ inch particle size; lawn top dressing less than ¼ inch
Color
Odor
Texture
Uniformity
Dark brown to black
Earthy, no ammonia smell
Within the batch
Foreign Materials
Concern of heavy metals (biosolids), human pathogens (manure), and salts (manure and biosolids)
RawMaterials
Weed Seeds
Less than 1% and smaller than ½ inch size
Test by germinating some material
Consistency
Between different batches