Effect of Nitrogen, Phosphorus and Potassium Additions on Plant Biomass and Soil Nutrient Content of a Swale Barrier Strand Community in Louisiana |
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| Authors: | DOUGHERTY K M; MENDELSSOHN I A; MONTEFERRANTE F J |
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| Institution: | Laboratory for Wetland Soils and Sediments, Center for Wetland Resources Louisiana State University Baton Rouge, Louisiana 70803-7511, USA |
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| Abstract: | Fertilization of a swale plant community with various levelsand combinations of nitrogen, phosphorus and potassium resultedin increased plant growth. Nitrogen addition produced the greatestincrease in biomass. At some high nitrogen levels, phosphoruslimited plant production. Potassium fertilization did not influenceplant growth. Phosphorus fertilization decreased the levelsof soil calcium, magnesium and manganese. A shore-perpendiculargradient in apparent saltwater inundation influenced soil pHand the concentrations of iron, phosphorus, and magnesium. Fertilizer effects, swale Scirpus americanus, Spartina patens, nitrogen limitation |
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