This trial was designed to assess amelioration of subsoil acidity using a range of tillage methods for incorporating surface applied lime into acidic subsoils and the impacts of tillage and lime on crop productivity. The trial site was held on deep yellow sand in Dandaragan and consisted of eight tillage treatments with three lime rates applied.
This trial was conducted by Southern Dirt and aimed to improve the adoption of liming practices in the medium to high rainfall zone of Western Australia by demonstrating the economic and environmental benefits of lime application and incorporation. The trial site was located 12km north of Kojonup and was chosen for its combination of targeted soil type (forest gravel) and pH range (4.5 – 4.8 CaCl2) up to a depth of 60cm.
This trial aims at characterizing the short and long term effects of ripping a mechanical hardpan to different soil depths. Understanding the interaction of managing mechanical hard pans with season is economically important to growers particularly in how they manage nitrogen fertilizer inputs. This experiment was established in Dandaragan on a deep yellow sand with compact and moderately acidic subsoil.
This trial aims to assess the effectiveness of simple and cheap ‘bolt-on’ attachments to deep ripper tines at incorporating topsoil and applied lime into acidic sandplain subsoils. This experiment was established in Dandaragan on a red loamy sand. The Long Bottom Boots functioned reasonably well at first, but tended to plug with soil from underneath after multiple passes and on finer textured soil to the south of the trial area.
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