Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Jaśkiewicz B. 2000. APHIDS COLONISING THE SHRUBS OF JUNIPERUS COMMUNIS L. AND ROSA CANINA L. , EJPAU 3(2), #02.
Available Online: http://www.ejpau.media.pl/volume3/issue2/horticulture/abs-02.html

ABSTRACT

The subject of studies conducted in the years 1995-1997 was the occurrence of aphids on the shrubs of common juniper and wild rose. The studies were carried out in the city green area in a street site (A) and a park site (B). The presence of four aphid species on wild rose shrubs and one species on common juniper shrubs was established. Aphids appeared in the greatest numbers in 1995, while the lowest number was observed on rose shrubs in 1996 and on juniper shrubs in 1997. It was found out that aphids were more numerous in area A, exceptionally in 1995 the number of Maculolachnus submacula Walk. was slightly higher than in area B. The weather in spring and summer affected the increase of the population of all aphid species. After an early and warm spring with rainfalls within the norm the appearance of aphids was more numerous. A delayed vegetative period, high temperatures (over 30°C), dry periods and stormy rainfalls limited the number of aphids.

Key words: aphids, Juniperus comunnis L., Rosa canina L., urban green areas..

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