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FOLIAR NUTRIENT DIAGNOSIS OF URBAN
SEASONAL VARIATION OF FOLIAR
MANGANESE DEFICIENCY OF URBAN
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analysis Arbor Calcium chlorosis rating chlorotic red maples chlorotic sugar maples chlorotic trees chlorotic urban red CONC concentration in healthy concentration in slight correlation decreased deficiency symptoms Ellis foliar manganese concentration foliar Mn foliar nutrient levels Forest 9 growth Guha and Mitchell healthy and chlorotic healthy to moderately healthy trees higher interveinal chlorosis iron Kielbaso and Ottman Lakes region Lansing late summer 1982 leaf leaves manganese deficiency manganese in healthy maples during 1982 Michigan Mn deficiency moderately chlorotic sugar Mortvedt mycorrhizae necrotic nitrogen optimum oxidation perchloric acids phosphorus plant nutrition potassium PPM Figure ppm Mn red maples sampled redox potential region during late regression roots season significantly slight to moderately soil manganese soil Mn soil organic matter soil pH Soil Sci soil texture Stevens Point sugar and red sugar maples sampled symptomatic Table Technicon terminal length toxicity uptake urban red maples urban sugar maples urban trees