The Non-Limiting and Least Limiting Water Ranges for Soil Nitrogen Mineralization

摘要: overall NUE. Criteria for identifying N management units are currently being sought, and the impact of water A better understanding factors controlling mineralization content on suggests that effects would improve our ability to estimate fertilizer requirements more texture, organic matter, compaction merit further accurately. Net approaches a small reaction rate at examination. These also other processes low high contents, giving rise lower upper limiting contents least range (LLWR). Within including denitrification, which may dramatically reduce LLWR, there is in Specific information required ranges largely independent content, is, non-limiting accumulation mineral (NLWR). An incubation study was conducted determine maximized or limited different soils, relations LLWR NLWR five soils with properties, two between limit relative levels without addition legume those encountered these through period crop residue. were incubated 1 3 mo eight greatest demand N. Although depencontents. increased time dence varies varied curvilinearly water-filled pore space