Abstract
Yellow duplex soils are widely distributed in Australia and predominate in the south-west of Australia. Crop growth on these soils is spatially variable and the work reported here is part of a large study on the cause(s) of the spatial variability and the options for raising yields. At a yellow duplex soil site near Beverley, Western Australia, soil pH (0-20 cm) was low and variable (pH 4.3–4.9). Somewhat paradoxically, wheat and lupin crops grew best where the soil was most acidic and lime did not improve yields. Other constraints, probably waterlogging and mechanical impedance appear more important than acidity in this soil (and this probably applies widely to yellow duplex soils). With lupins, lime reduced yields for reasons which were not clear.
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© 1993 Springer Science+Business Media Dordrecht
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Dracup, M., Belford, B. (1993). Crop growth on an acidic duplex soil: variable yields did not reflect variable soil pH and yields were not improved by lime. In: Barrow, N.J. (eds) Plant Nutrition — from Genetic Engineering to Field Practice. Developments in Plant and Soil Sciences, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1880-4_162
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DOI: https://doi.org/10.1007/978-94-011-1880-4_162
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