SUSCEPTIBILITY OF SOME GRAPEVINE VARITIES IN RELATION TO BIOLOGICAL ASPECTS OF THE TWO SPOTTED SPIDER MITE, Tetranychus urticae KOCH

Document Type : Original Article

Authors

Plant Protection : Research institute, Dokki, Giza

Abstract

The cultivars of some grapevines (Vitis vinifera L.) varieties, King Robi, Rebier, Flame Seedless, Thompson Seedless and Bez El-Anza were cultivated at            El- Salheia, Province El. Sharkia Govern- orate, during the season 2010. These varieties were tested under laboratory conditions to study their relative susceptibility to the infestation of Tetranychus urticae Koch at 25 ± 5°C and 75+ 5 % R.H.
King Robi variety  was the most susceptible variety  while Bez El-ElAnza., variety  was the less susceptible one. On the other hand, Rebier, Flame Seedless and Thompson Seedless have moderate susceptibility. The highest number of eggs was noticed on King Robe variety young leaves (18.35 eggs).
Journal of Plant Protection and Pathology
Volume 3, Issue 12
December 2012
Pages 1337-1343

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