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SODININKYSTË IR DARÞININKYSTË. SCIENTIFIC ARTICLES. 2006. <strong>25</strong>(4).<br />
EVALUATION OF APPLE DISEASES AND PEST SPREAD<br />
IN DIFFERENT REGIONS OF INDUSTRIAL EMISSION<br />
L. Duchovskienë, J. Sakalauskaitë, D. Kviklys, J. B. Ðikðnianienë, E. Kupèinskienë<br />
Summary<br />
Leaves of apple tree cv. ‘Antonowka’ (Malus domestica L.) growing near the<br />
different industrial centers – oil refinery “Maþeikiø nafta”, cement factory “Akmenës<br />
cementas” and nitrogen fertilizer factory “Achema” – were examined for diseases<br />
and pests damage. Near AB “Akmenës cementas” and AB “Achema” SO 2<br />
<strong>ir</strong> NO 2<br />
concentrations were small and similar to these in unpolluted places of Lithuania, only<br />
near AB “Maþeikiø nafta” SO 2<br />
concentration was higher. The greatest number of<br />
damaged leaves by leaf spot (Phylosticta mali Prill et Del.) was found in Jonava and<br />
Naujoji Akmenë districts in 2005–2006. Apple scab (Venturia inaequalis (Cooke)<br />
Aderh.) was found in Maþeikiai and N. Akmenë districts only. Leaf chlorosis was<br />
more abundant in Maþeikiai and Kaunas surroundings in 2005, but in the next year<br />
the most damaged leaves of this disease was found in Maþeikiai and Naujoji Akmene<br />
districts. The abundance and intensity of diseases was less in 2006, as compared<br />
with 2005. From leaves damaged by leaf spot 4 species of attendant fungus were<br />
distinguished. The damage of leaf chewing pests was found near the all sources of<br />
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