MITES IN MARJORAM AND CHAMOMILE CULTIVATIONS IN FAYOUM AND THE RELATIVE ABUNDANCE OF TWENTY SIX SPECIES
2005
A.A.R. Rahil,
A study on mite species in marjoram and chamomile plantations in Fayoum was carried out during 2003 and 2004 seasons. Twenty-six species were found and divided according to their feeding habits into three major groups, phytophagous (7 species), predaceous (8 species) and a group of debatable feeding habits (11 species). Population density evaluation showed that Tetranychus urticae Koch was the main phytophagous mite on both hosts. The predatory mite Amblyseius cydnodactylon Shehata and Zaher was dominant on marjoram followed by Hemicheyletia bakeri (Ehara). From the debatable group, Pronematus ubiquitus Mc Gregor was the dominant followed by Tyrophagus putrescentiae (Schrank) and Paralorryia gizai El-Bagoury. On chamomile, the predatory mite Eupodes niloticus Abou-Awad & El-Bagoury was dominant and from the debatable group, Tydeus kochi Oud. was dominant followed by T. putrescentiae and P. gizai. Population densities were insignificantly affected by temperature and relative humidity.
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