MARMARA BÖLGESİNDE EKONOMİK ÖNEMİ HAİZ ŞEFTALİ ZARARLILARINDAN Sitona crinitus Herbst., Phyllobiu s argentatu sL., P. canus L., ve Polydrosus impressifrons GylL'UN YAYILIŞLARI, BİYOLOJİLERİ VE MÜCADELESİ ÜZERİNDE ARAŞTIRMALAR
WORKS ON PEACH PESTS THAT ARE OF ECONOMIC IMIPORTAKO E EST MARMARA REGION
Yazar: Altay, M.; Erkam, B.; Gürses, A.
Dergi: Bitki Koruma Bülteni, Vol. 12 No. 1, 2008
Anahtar kelimeler: PEACH,PESTS,ECONOMIC ; MARMARA BÖLGESİNDE,EKONOMİK,HAİZ ŞEFTALİ

Son yıllard a dövi z kaynaklarımızda n biri olara k kabu l edilen ya ş meyv e ihracatımı z günde n gün e artış kaydetmektedir. Bunda en önemli rolü hastalık ve zararlı tahribatına uğramamış mahsul elde etme tekniği oynamaktadır. Buınun içinde meyvelere arız olan böcek ve mantarların biyolojisi ile mücadele metodlarını çok iyi bilmek gerekir. Yapılan etüdler sonunda şeftali bahçelerinde Coleoptera takımının Curculionidae familyasına bağlı Sitona crinitus Herbst. , Phyllobius argentatus L., P . Canus L. ve Polydrosus impressifrons Gyll. türlerinin gerek yaprak , gerekse meyvelerde zararlı olduğu anlaşılmıştır.

Economic destruction İs caused by adults on peach leaves and fruits. Since destruction degree is higher on dry years contro l with İnsecticides is needed. on such years. Destruction on fruit is eviden t by the hollovvs that are caused from the suction of its juice and by the change of Its color, chope and tastev Since larva destruction is on weeds roots it does not have economic importance., Larva population is high on an d light soils. Four destructive species are foundout on the peach trees of Marmara , and Trakya region, these are Siton a crinitus Herbst , Po1yd - rosus impressifrons Giyil, Phyllobius canusi». , and Phylîobiu s argentatu s L., and their belng destructive on peach . trees, for the first time is made known by us with a detailed information given along . During the winter S. crinitus stays as an adult and the other species sta y a s matur e larva e on soil, wrînkle d leave s an d plan t residues. Ali. thes e species give on e generation a year. Among the insecticides which have been tried (Carbaryl , Dimethoate, . 3-5-10 , DEDT, Azinphos) have given positive results if used in the late afternoon . Dimethoate and Phosphamidon , which are among the insecticides used against peach moths, have shown low effect but on the leaves they have shown phytotoxic effect. Azinphos Em . has shown decreasing lower effect than the previous years; soto find out whether peach moths gain resistance or not comparative trials are made and it is proved that resistance can not be taken into consideration since Gusathion W.P . gives higher results than Azinphos (Em. it is advised that İn large scale application Gusathio n W.P . be used . Alfchough Ethyl Azinphos gives better results than the others, because İt is less opisonous, it take s place as a second cholce . Imidan has again given. very positive results bu t is stays on the leaves and frülts as a white layer forthirt y days; it is desired t o find out by residu e analysis vvhethe r this layer is caused by the active injgredient or the filler but this could not be done by theResidue Analysis"Laboratory because of lack of the analysis methods., : Newly tried insecticides Folimat and 2960 Em . have also given positive results.». A.cçording: to the analyse s which are done for Gusathion , it a residue amount İs found to be below the tolerance level that is accepted in Germany and other countries.