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Abstract
Manganese (Mn) toxicity may play an important role in the poor survival of seedlings in declining sugar maple (
Acer saccharum Marsh.) stands in northern Pennsylvania. To determine the effect of Mn on the growth of sugar maple seedlings, 1-year-old seedlings inoculated with vesicular-arbuscular mycorrhizal (VAM) fungi and growing in sand-vermiculite-peat moss medium were irrigated for 7 weeks with nutrient solution (pH 5) containing 0.1 (control), 1, 2, 4, 8, or 16 mg L
-1 Mn. Total seedling dry weight was negatively correlated with Mn, becoming significantly different than the control at 2 mg L
-1 Mn. Stem and root dry weight were reduced by lower Mn levels than leaf dry weight. Manganese had no effect on the root/shoot ratio.
Citation
Schier, George A.; McQuattie, Carolyn J. 2002. Effect of manganese on endomycorrhizal sugar maple seedlings. Journal of Plant Nutrition. 23(10): 1533-1545.