Can early stage decay caused by Kretzschmaria deusta be detected & differentiated from other types of decay using a micro-drill?   David Humphries and  Alasdair Nicoll                           City of London Corporation Arborists – Hampstead Heath, North London Open Spaces     There have been suggestions that some decay detection equipment like the IML Resi PD400 may struggle to detect the early stages of decay caused by fungi species like Kretzschmaria deusta