Studies on Thrips, Frankliniella occidentalis (Pergaade) Infesting Rose Plants

Document Type : Original Article

Authors

1 Faculty, of Agriculture, Al-Azhar University, Egypt

2 Plant Protection Research Institute, Agric. Res. Center, Dokki, Giza, Egypt

Abstract

Seasonal abundance of thrips Frankliniella occidentalis (pergaade) and the relation between its population activity and weather factors were studied during 2017 and 2018 seasons on the Rose plants at. At El-Orman Garden, Giza Governorates Data of 2017 season indicated that the thrips population have two activity periods; the first which has the highest number occurred in mid-April while the 2nd one occurred in half of December.  On the other hand, 2018 season data indicated that F. occidentalis population also have two activity periods; the first one with the highest number occurred in the first of May while the other occurred in half of December too. Statistical analysis shows that the simple correlation and simple regression between thrips population and each of the maximum, minimum temperature and relative humidity with were insignificant at El-Orman Garden, Giza Governorate. In 2017 season, generally the infestation whis Thrips, F. occidentalis was relatively higher than 2018 season. Infestation with thrips reduced chemical components; oil, protein and vitamins in flowers of rose plants. 

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