USING TISSUE ANALYSIS AS A TOOL TO PREDICT BAHIAGRASS PHOSPHORUS FERTILIZATION REQUIREMENT
作者： Maria L. Silveira , Augustine K. Obour , Joao M. Vendramini , Lynn E. Sollenberger
DOI: 10.1080/01904167.2011.618578
关键词:
摘要: Tissue analysis in combination with soil testing has been recently incorporated the fertilization recommendations for bahiagrass Florida; however, limited research is available to validate proposed critical tissue phosphorus (P) level. A greenhouse experiment was conducted identify minimum P concentration below which dry matter (DM) yield impacted. Treatments consisted of three nitrogen (N) rates (0, 50, and 100 kg N ha−1), four 20, 40, 60 P2O5 ha−1) two clipping intervals (28 56 d). Bahiagrass yields increased response application. Phosphorus uptake showed a quadratic when applied. recovery linearly as rate increased. Root mass responded P, even at smallest (20 rate. Data indicated that 1.3 (±0.2) g kg−1 can be used an indicator deficiency.
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