Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 2
Written by Denisa-Daliana SFÎRCULUS, Ioana GROZEA
The Green Forest around Timișoara is home to numerous species of harmful insects. We would like to focus our attention on the species Metcalfa pruinosa known as Citrus Flatid Planthopper through this work. Uncontrolled, it is clear that the species can become dangerous for both woody plants in forests and those that constitute ground vegetation. Our study included observations of the size of nymph groups through the specific wax secretion left on the leaves of deciduous trees, 60-80 years old, but also older. The analysis was carried out in 7 sectors of the forest and had macroscopic techniques on site, by marking the target trees. All 8 plant species analyzed were affected in percentages ranging from 4.5% to 38%. The results showed that in sectors with predominant plants of Ulmus sp. and Acer sp. there were the most foliage with secretions, nymphs and adults. Also, the inner part of marginal trees and those near wide, airy paths were more affected by Metcalfa colonies. Regular monitoring could lead to reduction of damage.
[Read full article] [Citation]
