218-346-4260  |  801 Jenny Ave SW Suite 2 Perham, MN 56573  |  Hours: 7:30AM-4:00PM Monday-Friday

Register for the 2018 Irrigation & Nitrogen Managment Clinic

Click HERE to register for February 8th Meeting at Thumper Pond


McComas, Steve. Impacts of Ditch Aeration on Bioavailable Phosphorus in Ditch 14, Pelican River Watershed District, Minnesota. (January 2002). Prepared by Blue Water Science for Pelican River Watershed District.

This study summarizes several years of research on aeration of Ditch 14 in a wetland complex to reduce phosphorus export into Muskrat Lake and Lake Sallie. The results were inconclusive with mixed results for phosphorus reduction. Some issues include incomplete aeration of the ditch depth and little of the orthophosphate converted to total phosphate, which would have indicated adsorption and reaction of the available phosphorus.


McComas, Steve. Pelican River Watershed District Aquatic Plant Harvesting Program Evaluation. (December 1999). Prepared by Blue Water Science for Pelican River Watershed District.

The aquatic vegetation harvesting program on Detroit, Sallie, Melissa, and Muskrat Lakes was evaluated and recommendations for future operations given. Harvesting of aquatic vegetation using a floating harvester and roadside pickup are recommended to continue because it is a preferred alternative to herbicide use, reduces phosphorus in the lake, and may reduce exotic plant abundance.


Nutrient Retention of Harvested Aquatic Vegetation. (July, 1985). Instrumental Research, Inc.

This study focuses on the amount of nutrients from vegetation harvested on Lake Sallie and Lake Melissa. Removing the vegetation from the shoreline, instead of through a floating harvester, was most cost effective. The study tested the nutrient retention of vegetation on dry sand, wet sand, submerged on sand, and submerged without sand. The dry vegetation retained nutrients better than the wet treatments. This shows how important it is to quickly remove excess vegetation from the water and allow to dry above the waterline.

2018 Tree Order Form