Anionic Resin–Extractable Phosphorus as an Index of Phosphorus Availability in Calcareous Soils of Crete Amended or Not Amended with Pig Manure Compost

Autor: Vissarion Z. Keramidas, Mohamed Abdelrahman Mohamed, Aristidis Stamatakis
Rok vydání: 2013
Předmět:
Zdroj: Communications in Soil Science and Plant Analysis. 44:50-61
ISSN: 1532-2416
0010-3624
DOI: 10.1080/00103624.2012.734031
Popis: The objectives of this study were (a) to evaluate whether the phosphorus (P)–supplying power of soils, as assessed by Plant Root Simulator (PRS)TM probes, constitutes a reliable index of bioavailable P in calcareous soils and (b) to examine whether pig compost addition to calcareous soils increases their P-supplying power, P uptake by the crop, and yield. The study was conducted in a pot experiment with 14 calcareous soils and involved control soils, test soils, and soils treated with compost in which ryegrass was grown and harvested every month. Three biomass cuts were obtained, and P uptake, P concentration in the biomass, and biomass yields were determined. Correlations of total P uptake or P concentration in the biomass versus P-supplying power gave statistically significant coefficients of determination (P ≤ 0.01), which explained 82% and 87–92% of the variability of P uptake and P concentration, respectively. The relation between biomass yields and P-supplying power of soils satisfactorily obeyed th...
Databáze: OpenAIRE
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