Yield response to ripping depth on a South Stirling sandplain. Kojaneerup, Western Australia

To assess the yield response to deep ripping depth on a productive sand plain near Kojaneerup, WA.为评估西澳大利亚州（Western Australia，WA）科贾尼鲁普（Kojaneerup）附近一处高产砂质平原上，深松（deep ripping）深度对作物产量的响应关系。