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Israel Journal of Entomology

Nili Pinhassi and David Rosen - Department of Entomology, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel

Haim Reuveny - Kibbutz Yir'on, Upper Galilee, 13855 Israel

Dov Oppenheim - Ministry of Agriculture, Extension Service, Zefat, Israel

The onset and rate of oviposition and egg-hatching in the spring generation of the olive scale, Parlatoria oleae (Colvee) (Coccoidea: Diaspididae), were investigated during 1992 and 1993 in the Upper Galilee, Israel. A regional predictive phenological model was developed for both phenological events. Fifty percent oviposition was calculated to occur at approximately 176 degree-days accumulated from January 1st, while 50% egg-hatching occurred at approximately 303 degree-days. During 1993 the model accurately predicted the timing of the phenological events, with a maximal deviation of 5 days from the predicted dates. It is suggested that this model can be successfully applied to optimize pesticidal treatments against olive scale crawlers.

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Development of a predictive phenological model for the spring generation of the olive scale Parlatoria oleae (Colvee), in Israel: Preliminary results
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Nili Pinhassi and David Rosen - Department of Entomology, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel

Haim Reuveny - Kibbutz Yir'on, Upper Galilee, 13855 Israel

Dov Oppenheim - Ministry of Agriculture, Extension Service, Zefat, Israel

Development of a predictive phenological model for the spring generation of the olive scale Parlatoria oleae (Colvee), in Israel: Preliminary results

The onset and rate of oviposition and egg-hatching in the spring generation of the olive scale, Parlatoria oleae (Colvee) (Coccoidea: Diaspididae), were investigated during 1992 and 1993 in the Upper Galilee, Israel. A regional predictive phenological model was developed for both phenological events. Fifty percent oviposition was calculated to occur at approximately 176 degree-days accumulated from January 1st, while 50% egg-hatching occurred at approximately 303 degree-days. During 1993 the model accurately predicted the timing of the phenological events, with a maximal deviation of 5 days from the predicted dates. It is suggested that this model can be successfully applied to optimize pesticidal treatments against olive scale crawlers.

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