Notes: Temporal Variation in Nutrient Levels of Litter in Black Cherry Stands
Litter samples were collected in June, August, and November from beneath black cherry trees growing on the Allegheny Plateau of Pennsylvania. L-F organic matter increased from growing season levels of 4,200 and 4,000 kg/ha (June and August, respectively) to 6,100 kg/ha after leaf fall (November). In general and when expressed as absolute amount or concentration, there were no differences between June and August levels for N, P, K, or Mg. Total amounts of all macronutrients were significantly greater in November than in either June or August, but concentrations of N, P, K, and Ca were at peak levels in the litter during the growing season. FOREST SCI. 23:433-436.
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