Journal article

Publication year: 1988

Pages: 44-48

Journal: Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz

Volume number: 61

Issue number: 3

ISSN: 0340-7330

DOI Link: https://doi.org/10.1007/BF01906253

Publisher: Blackwell

Abstract: 
The results of this investigation prove that Phorodon humuli does not require a distanct flight phase before settling on the winter hosts: Clssified according to the distance from hops, 86% of the plants up to 20 m were colonized, only 43% of the plants in a range from 20 to 100 m, 25% in the 100-1000 m class and only 17% with more than 1000 m distance. These results were obtained with Prunus domestica. P. padus was not colonized at all and with P. spinosa in only the first two classes ranging up to 100 m distance settling could be demonstrated, but at a low level of 7 and 8% respectively. Observations of a single tree demonstrate a loss of more than 90% of the fundatrices in advance of colony-formation. Furthermore, a preference of those parts of the tree with a southern orientation for settling, egg-laying and colony-formation was shown and this could be confirmed by observations with other trees in the following years.

Harvard Citation style: EPPLER, A. (1988) INVESTIGATIONS ON HOST SELECTION OF PHORODON-HUMULI SCHRK .2. COLONIZATION OF THE WINTER-HOSTS, Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz, 61(3), pp. 44-48. https://doi.org/10.1007/BF01906253

APA Citation style: EPPLER, A. (1988). INVESTIGATIONS ON HOST SELECTION OF PHORODON-HUMULI SCHRK .2. COLONIZATION OF THE WINTER-HOSTS. Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz. 61(3), 44-48. https://doi.org/10.1007/BF01906253