The aim of this
study was to determine the seasonal population dynamics of the European red mite, Panonychus ulmi (Koch)
(Acari: Tetranychidae) on different apple varieties in apple orchards in
Çanakkale, Turkey, during 2010-2011. Surveys
were carried out weekly from April to November in sprayed and unsprayed
orchards on cultivated Golden
Delicious, Starking Delicious and Grany Smith apple varieties. The results of
the study indicated that the population density of spider mites began to
increase generally in early May, and reached the maximum level from mid June to
late August. Afterwards, it preserved to late September in both years. During
the both years, P. ulmi more prefered
the Starking Delicious than Golden Delicious and Grany Smith apple varieties in
the all orchards. In this period, the population densitiy of P. ulmi reached to maximum level with 115.9 and 75.3 mites/per leaf on the
Starking Delicious apple variety in 2010 and 2011 years, respectively in
sprayed orchards. In unsprayed orchard, spider mites remained at very low levels certainly because of the
presence of Typhlodromus athiasae Porath and Swirski (Acari:
Phytoseiidae) which was only one predator species on spider mites. On the other
hand in sprayed orchards, although Stethorus
punctillum (Col.: Coccinellidae) and Zetzellia mali (Acari: Stigmaeidae) were the most abundant predatory species
on spider mites, they could not
control the spider mites on both
apple cultivar and years.
Primary Language | English |
---|---|
Subjects | Agricultural Engineering |
Journal Section | Research Article |
Authors | |
Publication Date | July 31, 2019 |
Published in Issue | Year 2019 Volume: 1 Issue: 2 |
Acarological Studies is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International.
International Scientific Research Journal on Acarology