Summary
Wheat crops with stunted chlorotic patches are widespread in northern Victoria, Australia, and are often associated with dense, compacted layers of soil. Poor growth of subterranean clover, with symptoms of cupped and reddened leaflets, is also a problem in these cropping regions during the pasture phase of the rotation. Artificially compacted soils were created to test the hypothesis that these symptoms of poor growth were caused by soil compaction. Soil compacted from 0–20 cm with a bulk density similar to that measured in problem fields reproduced these symptoms in wheat and subterranean clover. Surface compaction alone also reproduced the symptoms in clover.
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References
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Reeves, T.G., Haines, P.J. & Coventry, D.R. Growth of wheat and subterranean clover on soil artificially compacted at various depths. Plant Soil 80, 135–138 (1984). https://doi.org/10.1007/BF02232947
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DOI: https://doi.org/10.1007/BF02232947