WHAT YOUR SOIL CAN TELL YOU
When we look at the rooting depth of a weed, the most limiting factors are determined by the root’s ability to propagate through the soil, tapping into both major and minor nutrients required. If your land has a subsoil compaction pan – a tight section of the soil beneath the top layer – then the ability for any plant to develop roots down into the profile is much more difficult. Similarly, if you have a wet paddock or lawn, my preference is to always dig a hole and have a look. There are a number of soil characteristics that can be contributing to a weed burden, and subsoil compaction might be one of them.