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subsoil amelioration

Catalogue: GRDC Final Reports
A Subsoil Reference Manual produced as part of this project provides important information in a relatively easy to follow format... Possible reasons underlying the lack of response to subsoil amelioration in the current project were assessed in a glasshouse trial using intact cores (which maintained the chemical/physical integrity of the soil profile)... Significant correlations between different subsoil factors were found, supporting observations in a previous study that was limited to a single district (Nuttall et al. 2003)...
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Catalogue: GRDC Final Reports
Simulations with an Agricultural Production Systems simulator (APSIM) were used to understand the large variation in wheat response commonly observed following subsoil amelioration... A more detailed identification of subsoil constraints can be achieved using spatially dense information from gamma-ray emission and EM38 surveys... Spatial estimates backed by measurements showed that only about a fifth of the paddock needed deep liming...
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