Summarising, the objectives of the Cloich project were: To identify the influence of underlying soil & lithology on forest growth of up to 30 years; To select cross-sectional discs of tree stems to give annual growth increment; To evaluate leaf area.
The trees were grown on either cultivate brown earth or a peaty gley. Half of the trees have been fertilised (NPK) and half have been treated with herbicides. This has lead to 8 distinct groups.
Discs were taken from the sample trees and tree rings measured by hand. Some of them have been scanned and the two compared. In addition, the leaf area was recorded. Attribution statement: