Occurrence of Tetranychus urticae on sour cherry trees in Southeastern of Macedonia

Atanasova, Biljana and Spasov, Dusan and Spasova, Dragica and Ilievski, Mite (2018) Occurrence of Tetranychus urticae on sour cherry trees in Southeastern of Macedonia. Book of proceedings 2018, IX International Scientific Agriculture Symposium “AGROSYM 2018”, Jahorina, 04-07 Oct 2018. pp. 922-926. ISSN ISBN 978-99976-718-8-2

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The two-spotted spider mite is probably one of the most polyphagous arthropods that feeds on tree fruits. It is distributed worldwide and is an economic pest of many crops. Its innumerable hosts include many weeds, field crops, ornamental plants, vegetables, forage crops, small
fruits and tree fruits (apple, pear, peach, nectarine, apricot, cherry (sweet and sour) and plum). The research was conducted during 2017 in sour cherry orchards in southeastern of Macedonia (the region of Stip, Strumica and Gevgelija), before and after the harvest of the
sour cherries (01.06. – 30.09.2017). Scouting for mites began prior the harvest. The method of monitoring two-spotted spider mite motile populations consists of sampling 10 leaves from 10 randomly selected trees (100 leaves) on an area of two ha. To estimate the number of mites per leaf, we count the number of leaves that have two or more two-spotted spider mite motile from each sample and follow the presence-absence sampling method look-up table. The results showed that after harvesting the sour cherries, during the summer and autumn, the
number of two-spotted spider mite increases and exceeds the economic threshold (8-10 spiders on the leaf), so chemical treatment is required in order to control the population of the spider. The problem in the Republic of Macedonia is that sour cherries producers rarely
perform postharvest treatment of the sour cherry trees, so the two-spotted spider mite population increases, which in turn contributes to a reduced yield of sour cherries.

Item Type: Article
Subjects: Agricultural Sciences > Other agricultural sciences
Divisions: Faculty of Agriculture
Depositing User: Biljana Atanasova
Date Deposited: 03 Dec 2018 13:24
Last Modified: 03 Dec 2018 13:24
URI: https://eprints.ugd.edu.mk/id/eprint/20915

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