Preliminary study of economic insects on gall oak trees at North Cyprus and North Iraq

Abstract :

The current study was carried out during 2015 at two country, north Cyprus and north Iraq .Various  sampling  techniques  were  used to collect different stages of insects from all oak  parts (root, stem, branches and leaves). The study revealed the presence of 5 insect species belonging to 3 order and 5 families. The intensity of infestation varied from regions to anther depending on tree age, agricultural practices and variation in food preferences for gall oak by insects. The results of field study showed a highest infestation by oak leaf cutter, Euproctis spp., on  gall oak  trees in northern of Cyprus and Iraq with a mean infestation reached (30.0, 67.5 %) respectively and a total mean were (86.7 %), followed gall oak  wasp,Andricus spp.(25.0, 56.2 %), respectively  with a total mean (72.2%), and oak  fruit  weevil, Curculia spp. (7.5, 20.0%) respectively, total mean (12.0%), while  there was a lowest infestation for oak moth, Lymantria dispar L. with infestation mean reached (0 and 5.0%)  respectively and total mean were (6.8%). Generally , the percentage of the infestation were highly on gall oak trees in north Cyprus with a general infestation mean reached (50.5%) compared with insect infestations in north Iraq were (45.8%), respectively. Field study results showed variation of infestation by gall oak insects  according  to  the  kind of  insect, climatic  conditions and the part of plant that has been infested, the most  insects  were observed from the beginning of April month  until  end of  October in both region, with highly  infestation in month July and Augusts were reached (70, 85 and 68, 75%) respectively, at mean  temperature (29.0, 35.7c0 and 29.0, 35.1) respectively, relative  humidity  (47.0, 44.7 and 50.0, 48.7%) and precipitation (1.0,0 and 0,0) respectively. While a least  infestation at month October and March were reached (15 and 10%) respectively, during study season

Keyword :

Infestation, economic  insects, gall oak, Cyprus, Iraq

Author(s) : Hamad, H. O., Mustafa, S. A., Fuller, W. J.
Downloads : 550
Published Issue : 2018 Vol. 13 Number 2

2018 Vol. 13 Number 2