Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2008.2490.2494Helicoverpa armigera (Hb.) in Central Greece]]>G. StavridisD. GliatisA. N. DeligeorgidisP. GiatropoulosC. GiatropoulosA. P. DeligeorgidisN. G. IpsilandisC. 1220081121The present study was conducted in 10 different communities of prefecture of Larissa, one of the main cotton-productive areas of Greece. Monitoring of Helicoverpa armigera lasted four years from 2002 to 2005. The monitoring system included four locations within each community and three traps in each location. Traps were of the funnel type, a reusable injection-moulded kind of plastic trap. Pheromone was z-11-hexadecenyl aldehyde 0.36% w/w. Insecticide (Vapona) was used for all the four years, but for years 2003 and 2004 double traps were used additionally, without the presence of insecticide (only with pheromone). Traps containing a pheromone and an insecticide had significantly greater number of insects trapped than those containing no insecticide. Fluctuation of insect population was different from year to year. Correlations on data between years (insect populations and cotton production across all communities) revealed that, when cotton production was low, the number of adult male insects of H. armigera captured in pheromone traps was high (r = -0.69). There were no statistically significant correlations between cotton production and number of trapped insects when data from all communities (across the four years) were used. Local conditions within each area have been proved important and these results were completely different compared to data concerning specific years. Prediction models must be used for average estimations within great areas that include data from many locations.]]>Benedict, J.H., K.M. El-Zik, L.R. Oliver, P.A. Roberts and L.T. Wilson,19891989pp: 121-153pp: 121-153Chaturvedi, I.,2007Helicoverpa armigera (Lepidoptera: Noctuidae).]]>621992206Chilcutt, C.F., L.T. Wilson and R.J. Lascano,2003Helicoverpa zea (Lepidoptera: Noctuidae) damage simulation model: Effects of irrigation, H. zea density and time of damage on cotton yield.]]>9611741183Deligeorgidis, N.P., C.G. Ipsilandis, G. Sidiropoulos, V. Greveniotis, L. Giakalis and P.N. Deligeorgidis,2008Tingis sideritis stusak (Heteroptera, Tingidae) on wild mountain tea Sideritis scardica Griseb. (Lamiaceae) of mount vermion in Greece.]]>5300304Frick, K.E. and R.F. Wilson,1981Bactra verutana1 larvae reared on an artificial diet.]]>10237239Gaines, J.C. and F.L. Campbell,1935Heliothis obsoleta (Fab.), collected in the field.]]>28445461Giatropoulos, C.,20051st Edn.,pp: 53pp: 53Godin, J., P. Maltais and S. Gaudet,20029513081313Nibouche, S., E. Gozé, R. Babin, J. Beyo and T. Brévault,2007Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) damages on cotton.]]>36151156Sekulic, R., K. Tatjana, S. Maširevic, D. Vajgand, F. Gordana and S. Radojčic,2004Helicoverpa armigera Hbn.) in vojvodina province in 2003.]]>32113124Sequeira, R.V. and C.L. Playford,2002Helicoverpa spp. (Lepidoptera: Noctuidae) abundance on commercial cotton in central queensland: Implications for pest management.]]>21439447Snedecor, G.W. and W.G. Cochran,19807th Edn.,Pages: 507Pages: 507Stavridis, D.G., C.G. Ipsilantis, P.C. Katarachias, P.G. Milonas, A.A. Ifoulis and M. Savopoulou-Soultani,2004Helicoverpa armigera (Lepidoptera: Tortricidae) larval instars and age based on head capsule width and larval weight.]]>155361Stavridis, D.G., P.N. Deligeorgidis, A. Gliatis, C. Giatropoulos, E. Mola, C. Fotiadou and C.G. Ipsilandis,2008Pectinophora gossypiella (Saund.) in Central Greece.]]>2008Tolis, I.D.,19991st Edn.pp: 734pp: 734Walker, G.P. and P.J. Cameron,1990431720