Effects of soil fertility on growth,nutrient concentration and mycorrhizal development of Liriodendron tulipifera seedlings inoculated with the vesicular-arbuscular fungus, Glomus fasciculatus

Seedlings were grown in 3.28-liter containers under greenhouse conditions and were inoculated with the vesicular-arbuscular mycorrhizal fungus, Glomus fasciculatus (Thaxter) Gerdemann and Trappe. Inoculated and non-inoculated seedlings were treated with 0, 2 or 4 g l^?1 nitrogen (N) as 19-6-12 controlled-release fertilizer. Mycorrhizal development increased growth of seedlings infected by G. fasciculatus at both 2 and 4 g l^?1 N. Without supplemental fertilizer, there was no growth increase of mycorrhizally infected seedlings.