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Fertilizer use not always helpful in revegetation efforts
Date:12/17/2009

work at all. It is still a bit puzzling," said Boudreau.

Results for the mineral fertilizer were mixed. Dune grass performed well to the addition of fertilizer, the reaction of spike trisetum was mixed, while the beach pea was impacted negatively.

This was no surprise to Boudreau. "The beach pea is a legume and they tend to grow better if the substrate is poor. So if you add nutrients they don't like it too much."

Based on the results, Boudreau and his colleagues would not recommend beach pea be used in revegetation efforts in areas with similar soil. Dune grass is a much better choice. Not only does it respond well to regrowth efforts, its roots can extent to a few meters, which helps to keep sandy substrate in place.

However, no vegetation will take at Whapmagoostui until ATV traffic is contained to road areas. Although they are smaller than trucks and cars, ATVs uproot and damage new and old plants. "Up to now, they were used everywhere," says Boudreau


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Contact: Prof. Stphane Boudreau
stephane.boudreau@bio.laval.ca
418-656-2131
Arctic Institute of North America
Source:Eurekalert

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