Robin Dagger

In an attempt to penetrate the layer of silt/clay material found under some of our greens we have been using a machine called a Robin Dagger. As can be seen in the video below, a single metal probe is driven into the soil profile to a depth of 50cm. Once fully inserted a burst of high pressure air is fired horizontally in two directions at the base of the hole. The air pressure used is around 135psi. This helps open the compacted silt/clay layer creating channels for water to drain into the sandy sub layer. We then fill the holes with sand to keep the channels open for as long as possible.