Abstract
Abstract The effect of pruning of side-branches of the lower part of cypress trees ( Cupressus sempervirens L.), a management practice in recreation forests in Israel, on development of cankering diseases caused by Seiridium cardinale (Wagener) Sutton & Gibson and Diplodia pinea (Desm.) Kickx, Petrak & Sydow f. sp. cupressi Solel, Madar, Kimchi & Golan, was studied. Pruning of trunk side-branches enhanced both incidence and severity of natural infection of the trunks by either of these pathogens. The effect of an asphalt wound dressing paste on severity of Diplodia cankering varied depending on the season of pruning. In winter and spring, disease severity ranks were significantly lower in trees treated with paste than in untreated ones, whereas in summer or autumn, application of paste did not affect the disease ranking. The effect of trunk pruning on the response of the crown to artificial inoculation was studied in relation to season. Spring pruning resulted in smaller Diplodia cankers on the stem, but not on branches, whereas summer pruning did not affect canker development in the succeeding autumn inoculation. Expansion of Seiridium cankers in pruned trees was hindered both in spring — on stem inoculations — and in autumn — on branches.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call