caa a22 4500 477112056 CHVBK 20180405111612.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00010993 doi (NATIONALLICENCE)springer-10.1007/BF00010993 The effect of soil compaction on growth and P uptake by Trifolium subterraneum [Elektronische Daten] interactions with mycorrhizal colonisation [H. Nadian, S. Smith, A. Alston, R. Murray] The effects of vesicular-arbuscular mycorrhizal (VAM) colonisation on phosphorus (P) uptake and growth of clover (Trifolium subterraneum L.) in response to soil compaction were studied in three pot experiments. P uptake and growth of the plants decreased as the bulk density of the soil increased from 1.0 to 1.6 Mg m-3. The strongest effects of soil compaction on P uptake and plant growth were observed at the highest P application (60 mg kg-1 soil). The main observation of this study was that at low P application (15 mg kg-1 soil), P uptake and shoot dry weight of the plants colonised by Glomus intraradices were greater than those of non-mycorrhizal plants at similar levels of compaction of the soil. However, the mycorrhizal growth response decreased proportionately as soil compaction was increased. Decreased total P uptake and shoot dry weight of mycorrhizal clover in compacted soil were attributed to the reduction in the root length. Soil compaction had no significant effect on the percentage of root length colonised. However, total root length colonised was lower (6.6 m pot-1) in highly compacted soil than in slightly compacted soil (27.8 m pot-1). The oxygen content of the soil atmosphere measured shortly before the plants were harvested varied from 0.18 m3m-3 in slightly compacted soil (1.0 Mg m-3) to 0.10 m3m-3 in highly compacted soil (1.6 Mg m-3). Kluwer Academic Publishers, 1996 bulk density nationallicence clover nationallicence compaction nationallicence impeded roots nationallicence mycorrhizal growth response nationallicence penetrometer resistance nationallicence Nadian H. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut Smith S. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut Alston A. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut Murray R. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 182/1(1996-05-01), 39-49 0032-079X 182:1<39 1996 182 11104 https://doi.org/10.1007/BF00010993 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00010993 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nadian H. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut NATIONALLICENCE 700 1- Smith S. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut NATIONALLICENCE 700 1- Alston A. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut NATIONALLICENCE 700 1- Murray R. Department of Soil Science, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, SA, Australia aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 182/1(1996-05-01), 39-49 0032-079X 182:1<39 1996 182 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer