Increasing the pH of acidic subsoils in the West Midlands is necessary to increase crop water use and crop yields. A fast way of doing so is to mix lime into the subsoil; spading and mouldboarding are two common methods used in the West Midlands. Both methods are relatively expensive, so this trial aims to assess the effectiveness of a modified one-way plough at achieving subsoil pH change. This trial was located in Warradarge on deep sandy duplex soil. 

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