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5 results for “phosphorus fractionation”
Dataset for "Phosphorus fractionation of recycled fertilizers reveals inadequacy of the SMT protocol"
<p>Raw dataset used in the manuscript "Phosphorus fractionation of recycled fertilizers reveals inadequacy of the SMT protocol"</p>
Phosphorus fractions and related properties in soils under Pinus sylvestris L. plantations in Spain
<p>This database presents information about the P fractions in soils determined following the method developed by Hedley et al. (1982) and modified by Tiessen and Moir (1993) and other soil chemical properties of soils under <em>Pinus sylvestris </em>L. plantations in Spain.</p> <p>Abbreviations of variables names and units are described below:</p> <p>pH: soil pH; EOC: easily oxidizable C (%); EA: exchangeable acidity (cmol<sub>(+)</sub>·kg<sup>-1</sup>); Ca: exchangeable Ca (cmol<sub>(+)</sub>·kg<sup>-1</sup>); Sat: base saturation of the exchangeable complex (%); Al<sub>A</sub>, Fe<sub>A</sub>: amorphous Al and Fe (mg kg<sup>-1</sup>); Al<sub>E</sub>: exchangeable Al (cmol<sub>(+)</sub>·kg<sup>-1</sup>); Al<sub>M</sub>, Fe<sub>M</sub>: organically bound Al and Fe (mg kg<sup>-1</sup>); SI: forest site index (m); Cmic: microbial biomass C (mg kg<sup>-1</sup>); Pmic: microbial biomass P (mg kg<sup>-1</sup>); Cmin: mineralizable C (mg·kg<sup>-1</sup>·week<sup>-1</sup>) ; AcPhos: acid phosphatase activity (µg·g<sup>-1</sup>·h<sup>-1</sup>); PAEM: available P (mg kg<sup>-1</sup>); PiNaHCO3, PoNaHCO3: inorganic and organic highly labile P (mg kg<sup>-1</sup>); PoNaOH; PiNaOH: inorganic and organic moderately labile P (mg kg<sup>-1</sup>); PHCl1M: primary P (mg kg<sup>-1</sup>); PHClconc: stable P (mg kg<sup>-1</sup>); PHClO4: residual P (mg kg<sup>-1</sup>); PTotal: addition of all previous P fractions analysed (mg kg<sup>-1</sup>).</p>
Fractions of soil phosphorus mediated by rhizospheric phoD-harboring bacteria of deep-rooted desert species are determined by fine-root traits
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Phosphorus Fractions in Grassland and Shrubland Soils at the Sevilleta National Wildlife Refuge, New Mexico (1989)
This study examined concentrations of organic and inorganic phosphorus in surface soils of a Bouteloua gracilis-Bouteloua eriopoda grassland and a Larrea tridentata shrubland in the northern Chihuahuan Desert, New Mexico, USA. In this desert, where grassland vegetation has a uniform spatial distribution and individual shrubs have a patchy distribution, vegetation strongly influences the locations and concentrations of soil nutrients. Most studies of soil phosphorus (P) fractions in desert soils have focused on inorganic P fractions and have demonstrated the importance of geochemical controls on soil P cycling. This study addressed whether organic phosphorus, determined by the presence of different vegetation types, also contributes to soil P cycling. Within soils of similar age, topography, parent material, and climatic regime, samples were collected under and between vegetation and analyzed for P fractions following a modified sequential fractionation scheme.
A Global Database of Soil Phosphorus Compiled from Studies Using Hedley Fractionation
This data set provides concentrations of soil phosphorus (P) compiled from the peer-reviewed literature that cited the Hedley fractionation method (Hedley and Stewart, 1982). This database contains estimates of different forms of naturally occurring soil phosphorus, including labile inorganic P, organic P, occluded P, secondary mineral P, apatite P, and total P, based on the analyses of the various Hedley soil fractions.The recent literature survey (Yang and Post, 2011) was restricted to studies of natural, unfertilized, and uncultivated soils since 1995. Ninety measurements of soil P fractions were identified. These were added to the 88 values from soils in natural ecosystems that Cross and Schlesinger (1995) had compiled. Cross and Schlesinger provided a comprehensive survey on Hedley P data prior to 1995. Measurement data are provided for studies published from 1985 through 2010. In addition to the Hedley P fraction measurement data Yang and Post (2011) also compiled information on soil order, soil pH, organic carbon and nitrogen content, as well as the geographic location (longitude and latitude) of the measurement sites.
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OpenNeuro
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