Two new tree health technologies to be demonstrated at Liverpool arb event

The Arboricultural Association's North West Regional Group will showcase two promising developments in tree health care at its meeting on 30 June.

Horse chestnut leaf miner damage - image:Tristram Brelstaff
Horse chestnut leaf miner damage - image:Tristram Brelstaff

Firstly, Syngenta will explain its Tree Micro-Injection system, which can be used against a number of problem pests including oak processionary moth and horse chestnut leaf miner.

Under an experimental licence issued by the Chemicals Regulation Directorate, some horse chestnuts will be treated while others are left as controls.

Syngenta has said the system is completely closed, ensuring there is no environmental or operator exposure to the product, and that the valve plugs used are bio-degradable.

Secondly, the Arborcheck Nursery Benchmark System from Barcham Trees and Hansatech Instruments measures chlorophyll fluorescence from a tree's leaves and compares these with a benchmark figure for the tree type, providing an "early warning system" of disease or other stress well before visual signs appear.

Places can be booked on the Arboricultural Association website.

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