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Chapter 7 Nutrient Leaching - Cornell University

Chapter 7 Nutrient LeachingJ. LEHMANN1 ANDG. SCHROTH21 College of Agriculture and Life Sciences, Department of Crop andSoil Sciences, Cornell University , 909 Bradfield Hall, Ithaca, NY14853, USA; 2 Biological Dynamics of Forest Fragments Project,National Institute for Research in the Amazon (INPA), CP 478,69011 970 Manaus, AM, SynopsisNutrient Leaching is the downward movement of dissolved nutrients in thesoil profile with percolating water. Nutrients that are leached below therooting zone of the vegetation are at least temporarily lost from the system,although they may be recycled if roots grow deeper. Leached nutrientsmay contribute to groundwater contamination in regions with intensiveagriculture.

Among the micronutrients, manganese and boron are susceptible to leaching in certain soils (Havlin et al., 1999). ... (682 g biomass with 3.01% N). Note that absolute quantities of nitrogen taken up from urea and Leucaena biomass were similar (2.1 g per plant); differences in percentage uptake resulted from different quantities applied.

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