Record ID No. |
243 |
Author(s) |
Asghari H.R., Chittleborough D.J., Smith F.A., Smith S.E. , 2005 |
Affiliation |
Soil and Land Systems, School of Earth and Environmental Sciences, Waite Campus, The University of Adelaide, DP 636, SA, 5005, Australia, email:hamid.asghari@adelaide.edu.au, hamidasghari@sstp.ir |
Title |
Influence of arbuscular mycorrhizal (AM) symbiosis on phosphorus leaching through soil cores |
Source. Vol.(no):Page |
Plant and soil. 275(1-2): 181-193p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Fungal evaluation |
Host |
Trifolium subterraneum |
Organism |
AMF |
Country |
Australia |
Abstracts |
Two experiments with soil cores were carried out to investigate the effects of arbuscular mycorrhizal (AM) fungal colonization on mobility of phosphorus (P) during leaching of repacked columns of a soil with a loamy sand texture. Trifolium subterraneum plants inoculated with an AM fungus or not inoculated were grown in cores with low or high P concentrations for 8 or 10 weeks in the glasshouse. Cores were then irrigated with 2500 mL water and the leachate collected. Plant growth and the amounts of P removed by plants, remaining in soil as available P and removed dissolved in leachate were measured. Mycorrhizal fungal colonization and development of external hyphae were also determined. Inoculation and/or P application significantly increased plant growth and plant P removal and decreased P leaching. In low P soils AM fungal colonization significantly increased plant P uptake and decreased soil available P and total dissolved P in leachates. Lower P leaching from cores with AM plants under low P conditions was related to enhancement of plant growth and to scavenging and removal of P from the soil by roots and/or external hyphae. When P was applied AM effects were not observed and available P remaining in the soil after leaching was much higher, regardless of AM fungal colonization |