5129 x 3418 px | 43,4 x 28,9 cm | 17,1 x 11,4 inches | 300dpi
Data acquisizione:
24 maggio 2010
Altre informazioni:
"Pollarding is a pruning system in which the upper branches of a tree are removed, promoting a dense head of foliage and branches. It has been common in Great Britain and Europe since medieval times. Trees were traditionally pollarded for one of two reasons: for fodder to feed livestock, or for wood. Fodder pollards produced "pollard hay", which was used as livestock feed; they were pruned at intervals of 2-6 years so that their leafy material would be most abundant. Wood pollards were pruned at longer intervals of 8-15 years, a pruning cycle that tended to produces upright poles favored for fence rails and posts as well as boat construction. One consequence of pollarding is that pollarded trees tend to live longer than unpollarded specimens. Pollard trees may attain a greater age than normal, because they are maintained in a partially juvenile state, and they do not have the weight and windage of the top part of the tree. Older pollards often become hollow, and so can be difficult to age accurately. Pollards tend to grow slowly, with narrower growth rings in the years immediately after cutting." Wikipedia