[DOWNLOAD] "Ecological Aspects of Uroleucon Compositae (Theobald) on Verbesina Encelioides Gaertn in Abha Area Assir Province, Saudi Arabia (Report)" by ElTayeb Mohamed ElKhider # eBook PDF Kindle ePub Free

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eBook details

• Title: Ecological Aspects of Uroleucon Compositae (Theobald) on Verbesina Encelioides Gaertn in Abha Area Assir Province, Saudi Arabia (Report)
• Author : ElTayeb Mohamed ElKhider
• Release Date : January 30, 2010
• Genre: Engineering,Books,Professional & Technical,
• Pages : * pages
• Size : 82 KB

Description

Byline: ElTayeb Mohamed ElKhider - Email elkhidere@yahoo.com ABSTRACT: The genus Uroleucon is a quickly spreading genus in the various continents of the world, on many plant families causing serious damage ; the species Uroleucon compositae is mainly found on the Asteraceae, Compositae, Solanaceae and the Crucifereae ; in Abha Southwestern Saudi Arabia, this species is very common on the plant Verbesina encelioides forming noticeable dense populations.In this study the time of appearance and the time of disappearance of the aphid is noted, and the population buildup was carefully studied and recorded; the results are analysed and their significance pointed out.

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