Biosolids Forest Fertilization Project

Questions & Answers

The following is a small sample of some commonly asked questions about biosolids application projects.

Why does Vancouver Island University apply biosolids to sites in its forest?

The VIU Forest is dedicated to demonstrating modern practices in forestry and ecology. We have forest sites where a lack of nutrients severely limits tree growth, and we have available to us an abundant supply of municipal biosolids which can provide those nutrients. This project will provide a model for how we can improve the health of our forests in an ecologically sensible way and help the Regional District of Nanaimo divert biosolids from its landfill site.

What is in biosolids?

Biosolids are comprised mostly of water, sand, nutrients and organic matter (also called humus). Biosolids also contains nitrogen, phosphorus and other nutrients that plants need for growth, as well as trace elements and beneficial micro-organisms.

Where else has this type of project been done?

Treated biosolids have been widely used in Canada, the United States and Europe for over 40 years. Kelowna has used its biosolids to fertilize orchard trees since 1995. Closer to home, farmers in Parksville and Qualicum have been using biosolids from the French Creek Pollution Control Centre to fertilize their agricultural land. Seattle, Washington has 20 years of experience with applying biosolids to forest land. The Greater Vancouver Regional District completed a three-year research project with the University of British Columbia to demonstrate the potential for recycling treated biosolids as a forest fertilizer. Vancouver Island University’s 1992 project demonstrated significant increases in the health and growth rates of trees without detrimental effects on the environment.

Need further information?

Click on the links provided in the Additional Documents section on the right side of the screen. The FAQs document contains an expanded list of questions and answers regarding this biosolids project.

If you have any questions that have not been covered in this website please contact Marise Wickman, R.P.F. at 753-3245 ext. 2232 or e-mail marise.wickman@viu.ca.