This interesting article, written by Simon Holmes, highlights that arboriculturists are not utilising current science based tree physiology assessment techniques to support cases for tree removal or retention, or to counter evidence supplied by the other side.

This article was written by Dr. Glynn Percival (Bartlett Tree Research Laboratories) and Simon Holmes (Tree Surveys) based on data provided at the 47th Arboricultural Association Conference, Exeter in September 2013. It deals with questions on placement of leafclips and the best time of day to carry out fluorescence measurements.

The attraction of Chlorophyll fluorescence as a new diagnostic tool in the detection of stress in trees has been increasing in the past couple of years. But what actually is chlorophyll fluorescence and how can it help today’s consultant?

Report by Dr. Glynn Percival and Jon Banks of Bartlett Tree Experts following initial 3 seasons of nursery stock testing at Barcham Trees. This report formed the basis of the idea that a new system could be developed to utilise the vast amount of data collected on the nursery as a control for measurements of trees off-nursery.