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PROCEDURES FOR THE COLLECTION OF RUNOFF SAMPLES
Determination of organic and ammonia nitrogen
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acre inch aliquot Almena silt loam Amer available potassium average losses Collington corn plot erlenmeyer flask eroded material erosion losses erosion plots exchangeable potassium extractable phosphorus Fayette silt loam fertilizer Flocculation grain plot Gugel farm Hundt farm inch of runoff Kohnke Lake Decatur LAKE MENDOTA legume loess loss of soil Losses from Fayette losses of soluble Madison material eroded method Miami silt loam nitrate nitrogen determinations nutrient losses oat plot organic and ammonia organic matter content pH 3 extractable phenanthroline phos plant nutrients Plot 11 plots studied pounds of organic pounds of soil pounds of soluble pounds per acre rain rainfall distribution rotation CGHH runoff analysis runoff and erosion runoff periods runoff samples runoff water Siltation slope soil losses soil material soil organic matter Soil Sci soluble and pH soluble phosphorus streams and lakes suspended solids Table test tube thesis trogen Truog University of Wisconsin