Preliminary observations on cherry (Prunus avium L.) infested by the cherry fruit fly (Rhagoletis cerasi L.) in protected and unprotected stands
Journal Title: Annals of Warsaw University of Life Sciences - SGGW Horticulture and Landscape Architecture - Year 2018, Vol 39, Issue 39
Abstract
The European cherry fruit fly has great economic importance in Poland and all over the world. The infestation of sweet cherry fruits by its larvae can reach 100%. The aim of the study was to compare the levels of infestation of a wild cherry, as well as the sweet cherry cul-tivars 'Vanda', 'Summit' and 'Alex' growing in a chemically controlled orchard, and the cultivar 'Regina' in an ecological orchard. The abandonment of chemical control in part of the orchard led to a high level of fruit infestation on unprotected trees. Fruit damage on the late ripening cultivar 'Alex' was 45%, while on the 'Regina', from the ecological orchard, it was 52%. The percentage of infested fruits was similar regardless of the part of the tree crown (bottom, middle or upper) from which the fruits were sampled. The fruit ripening time of the cultivars had a significant impact on the levels of fruit infestation. Late ripening cul-tivars were infested to a higher degree than mid-ripening cultivars, which is in accordance with the previous observations of other authors. No parasitoids of Rhagoletis cerasi larvae were found in either stand. This also refers to the stand of wild cherry, in which the occurrence of the parasitoid Psytallia carinata had been noted in the previous year. This research should be continued in more stands, including also the parasitic wasps of R. cerasi pupae.
Authors and Affiliations
TIFFANY HERNIK-ZAWISTOWSKA, KATARZYNA MICHALSKA, MARCIN STUDNICKI
Landscape as the tool of coherence in the land management of rural communes
The economic and social transformation of rural areas in Poland after 1990 reveals itself/can be seen through the disintegration of the previous spatial order. Building a new pattern requires a vision which would counter...
Environment-population relations in Albania and their impact on the management of socio-geographical space
There is a very interesting relationship between population on one hand and environment on the other, which can offer useful contributions to broaden the understanding of this subject. It is an interdisciplinary field of...
Morphological changes and micronuclei frequency in microspore tetrads of Achillea millefolium from the areas of coal-fired power plants
In Poland the energy sector is 80% based on coal and lignite, therefore the problems associated with air pollution by fuel combustion by-products are of great importance. Carbon and sulphur dioxides, polycyclic aromatic...
The role of the countryside in strengthening the green infrastructure system WrOF based on the example of Chrzanów village
The landscape is dynamic, and it undergoes constant changes which are clearly visible in places of intensive human activity. In the existing natural system, there are the phenomena of landscape fragmentation, including t...
Disturbed, restored and novel ecosystems - Concepts and practices challenging landscape planning, design and management in the 21st century
Since the industrial revolution of the 18th century the human population has been quickly expanding (aprox. 7.5 billion people in 2017 according to Worldmeters.info), deeply changing all the ecosystems of the Earth and i...