Mosses (Bryophyta) and Lichens (Lichenes) on Fruit Trees and Their Control Measures

Abstract

The article discusses frequency of occurrence of mosses and lichens on wild and cultivated fruit trees (apple, pear, plum, cherry plum, cherry, sweet cherry) in the forests of the Marmarik River basin, private farms, as well as in industrial and intensive gardens of the Kotayk and Gegharkunik regions of the RA. Against the background of sanitary and mechanical measures, a single spraying of apple trees with fungicides completely protected the trees from the mosses and lichens or provided high biological effectiveness. Experiments carried out without mechanical cleaning of trees and with the use of sanitary and chemical measures also showed high biological effectiveness.