%0 Journal Article
%T The relationship between available P and selected biological properties in the rhizosphere of ten crop species under glasshouse conditions Relaci車n entre el P disponible y algunas propiedades biol車gicas en la rizosfera de diez especies vegetales cultivadas en invernadero Rela  o entre o P dispon赤vel e um conjunto de propriedades biol車gicas selecionadas na rizosfera de dez esp谷cies vegetais cultivadas em estufa
%A Ali Akbar Safari Sinegani
%A Tahere Rashidi
%J Spanish Journal of Soil Science
%D 2012
%I Universia
%R 10.3232/sjss.2012.v2.n2.05
%X The aim of the present study was to evaluate the effect of cultivation of 10 agronomic plant species on selected biological activities and bioavailability of phosphorus (P) in different sampling zones. The lowest available P was measured in the planted soil with Solanum lycopersicum. Helianthus annuus, Zea mays and Phasaeolous vulgaris had a relatively larger effect on the decrease of available P in the rhizosphere soil and in the soil adhering to the root mats. S. lycopersicum and P. vulgaris had the highest P concentration (> 980 mg kg-1) and H. annuus and Z. mays had the highest P uptake (17.62 mg pot-1 and 13.13 mg pot-1, respectively). The mean soil microbial biomass P (MBP) was significantly high in the rhizophere soil and in the soil adhering to root mats of T. aestivum, Z. mays, S. tuberosum and S. lycopersicum (> 16 mg kg-1). The mean spore numbers of glumales (SNG) were significantly high in the rhizophere soil and in the soil adhering to root mats of P. vulgaris, S. lycopersicum, T. aestivum and Z. mays (> 167 N/10 g soil). The negative correlations of available P and soluble P with soil biological properties like SNG and alkaline phosphatase activity and the positive correlation with soil pH shows the importance of rhizomicroorganisms and glumales on P nutrition by plants in calcareous soil. Thus rhizosphere acidification of calcareous soil may not be as important as the improvement of biological properties in P uptake and acquisition by plants. El objetivo del presente trabajo fue evaluar el efecto del cultivo de 10 especies de plantas vegetales sobre determinadas actividades biol車gicas y sobre la biodisponibilidad de f車sforo (P) en diferentes zonas de muestreo. El valor m芍s bajo de P disponible se midi車 en el suelo con Solanum lycopersicum. Helianthus annuus, Zea mays y Phasaeolous vulgaris tuvieron un efecto relativamente mayor sobre la disminuci車n de P disponible en la rizosfera del suelo y en el suelo adherido a las ra赤ces. S. lycopersicum y P. vulgaris presentaron la concentraci車n de P m芍s elevada (> 980 mg kg-1) y H. annuus y Z. mays fueron las especies que mostraron una mayor asimilaci車n de P (17,62 mg maceta-1 y 13,13 mg maceta-1, respectivamente). El contenido medio de P en la biomasa microbiana del suelo (MBP) fue significativamente elevado en la rizosfera del suelo y en el suelo adherido a las ra赤ces de T. aestivum, Z. mays, S. tuberosum y S. lycopersicum (> 16 mg kg-1). La media del n迆mero de esporas de glomales (SNG) present車 valores elevados en la rizosfera del suelo y en el suelo adherido a las ra赤ces de P. vulgaris, S. lycope
%K Phosphorus
%K bioavailability
%K nonrhizosphere
%K F車sforo
%K biodisponibilidad
%K no rizosf谷rico
%K F車sforo
%K biodisponibilidade
%K n o rizosfera
%U http://sjss.universia.net/pdfs_revistas/articulo_251_1342182573671.pdf