To understand the financial benefit of the many ameliorations options, it is vital to know how long the productivity gains from their implementation are likely to last. In this trial, large-scale on-farm strip trials with repeated controls using grower seeders and harvesters were applied. This trial deonstrated one-off mouldboard ploughing, rotoary spading and claying.
Strategic deep tillage can be used to ameliorate soil water repellence and subsoil constraints. One-way disc ploughs have a low capital cost and are relatively cheap to modify into a simple but robust tool for partial soil inversion. In this demonstration one-way disc ploughing was compared to rotary spading, a proven amelioration option for repellent sands and a number of deep ripping approaches, including some of the newer very deep rippers.
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