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The Influence of Apple Tree Chemical Thinning on Yield and Fruit Quality

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Authors
Radivojević, D.
Milivojević, Jasminka
Oparnica, Čedo
Veličković, Milovan
Zabrkić, G.
Article (Published version)
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Abstract
In the present study, the influence of different agents for apple tree chemical thinning on yield components and fruit quality was investigated. The experiment was conducted in apple orchard established with cultivars 'Idared', 'Golden Delicious' and 'Mondial Gala' during 2009. The agents tested were Napthalenacetamid (NAD), alpha-naphtaleneacetic acid (NAA, two concentrations) and Carbaryl (Sevin WP-50). Chemical thinning expressed significant influence on decreasing of fruit number per tree and increasing of fruit size. Among the tested agents only Carbaryl did not show these effects in 'Golden Delicious'. Yield per tree was not affected by chemical treatments in 'Idared', whereas the thinning significantly decreased the yields in 'Golden Delicious' and 'Mondial Gala'. A significant return bloom was recorded in all chemical treatments in 'Idared' and 'Golden Delicious'. Chemical fruit composition was not influenced by thinning treatments in all tested cultivars. In 'Mondial Gala' mor...e intensive fruit colour was recorded in the treatments with Carbaryl and NAD, which also reduced the fruit number per tree.

Keywords:
apple cultivars / NAD / NAA / Carbaryl / productivity
Source:
Acta Horticulturae, 2012, 981, 1, 329-336
Funding / projects:
  • Development of integrated management of harmful organisms in plant production in order to overcome resistance and to improve food quality and safety (RS-46008)
  • The application of new genotypes and technological innovations for the purpose of improvement of fruit-growing and viticultural production (RS-31063)

DOI: 10.17660/actahortic.2013.981.51

ISSN: 0567-7572

WoS: 000323698800051

Scopus: 2-s2.0-84879202693
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/2735
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Poljoprivredni fakultet

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