Fall 2011
How you contribute to soil health
If you contribute your daily bodily wastes to a municipal waste treatment plant, you are more than likely directly benefiting Washington soils.
According to Puyallup soil scientist Craig Cogger, each person in Washington produces about 60 pounds of biosolids per year. “Biosolid” is a euphemism for human waste and other inputs once they have been treated at a wastewater treatment plant. For the past 15 years, Cogger has helped spread biosolids on wheat land in Douglas County and studied the effect.
That effect has surprised him.
“We have seen a remarkable increase in organic matter,” he says, “despite the fact that the amount of biosolids … » More …