SOME ASPECTS OF MYZUS CERASI CURVE OF FLIGHT IN THE WEATHER CONDITIONS OF WESTERN ROMANIA PUBLISHEDDaniela Minca, Ana–Maria Vîrteiu, Doru Petanec
In the present paper were emphasized the results of aphid flight (winged forms) of Myzus cerasi in weather conditions of Western Romania in the period 2007- 2009. Paper originality was given by the fact that the cherry was more cultivated in Banat, and the pests were partial studied. In that context, the paper purpose was to bring new contribution to bioecological particularities knowledge of Myzus cerasi species. The curve of flight was followed from winged forms apparition to cherry cropping. For curve of flight realization were used two types of adhesive traps: type RAG and type SZs, placed to different altitudes in head of trees. Investigation made during a period of 20 days, with a periodicity of reading to every 24 hours. The danger time for the orchard was of 19 days in the year 2007, respectively 13-30.06, and the maxim stage was taught in 22.06, characterized through a temperature of 24.3 degree C and an atmospheric humidity of 67%. In the year 2008, it observed that the danger time was of 17 days, from 08-25.06, and the maximum level was taught in 20.06, date characterized through a temperature of 22.4 degree C and an atmospheric humidity of 62%. In the same time with curve of flight realization in the year 2009 it observed that danger time for the orchard was also of 17 days, from 11-28.06, the maxim level taught being in 16.06, characterized through a temperature of 25.7 % degree C and a humidity of 55%. The curve of flight of aphid populations, winged forms, in the three years of observations presented in general, a similar evolution registering a gradual increasing of populations in the first decade of June month, followed by a gradual decreasing until the end of period. Experimental data offered bird’s eye view on the attack produced by Myzus cerasi on cherry orchards and on treatments applying necessity to warning.
aphids, curve of flight, traps