Phosphorus availability and dynamics in soil affected by long-term ruzigrass cover crop - Almeida, Danilo S.; Menezes-Blackburn, Daniel; Zhang, Hao; Haygarth, Philip M.; Rosolem, Ciro A. (Geoderma, 2019)
Keywords: cash crops; cover crops; Crop rotation; desorption; DET; DGT; Fallow; fertilizer rates; field experimentation; Glycine max; grasses; microbial biomass; microorganisms; no-tillage; phosphorus; phosphorus fertilizers; soil; soil solution; soybeans; Urochloa ruziziensis; viability; PDGT; Rdiff; PDET; R-Rdiff; Presin; k−1; Tc; DGT; SOM; DET; DIFS; R; PE; Crop rotation; Urochloa ruziziensis; Kd; MBP; Fallow; Presin, soil phosphorus extractable with anion exchange pearl resin; Tc, response time of (de)sorption process; MBP, microbial biomass phosphorus; PDGT, DGT measured time average P concentration at the interface of soil and DGT device; PE, effective P concentration; DGT, diffusive gradient in thin films; R, ratio of PDGT and PDET; Kd, equilibrium distribution coefficient between solid phase and soil solution; Rdiff, ratio of PDGT to PE in the case where there is no P resupply from the solid phase; DET, diffusive equilibrium in thin films; k−1, desorption rate constant; DIFS, DGT induced fluxes in soils and sediments model; SOM, soil organic matter; R-Rdiff, relative resupply from solid phase; PDET, soil solution P concentration measured by DET