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IMPORTANCE OF SORT SELECTION AND FUNGICIDES APPLICATION IN CERCOSPORA BETICOLA SACC. SUGAR BEET LEAF SPOT PREVENTION AND QUALITY ROOT HIGH YIELD ACHIEVEMENT

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Author(s): Andrija Kristek | Renata Glavaš–Tokić | Suzana Kristek | Manda Antunović

Journal: Poljoprivreda (Osijek)
ISSN 1330-7142

Volume: 12;
Issue: 1;
Start page: 27;
Date: 2006;
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Keywords: sugar beet | hybrids | Cercospora beticola Sacc. | root yield | quality

ABSTRACT
Sugar beet hybrids value as well as their tolerance to the leaf spot agent (Cercospora beticola Sacc.) were researched in the natural infection conditions with and without fungicides application on two locations (Topolje, Seleš) in the two year period (2004, 2005). Evaluation has been done via root yield and quality, sugar yield as well as visual leaf damage estimation. The research comprised 26 sorts as either widely used in practice or to be introduced. The investigated sorts showed insufficient tolerance to C. beticola Sacc. Thus, fungicide application, compared to untreated trials, resulted in increased mean root yield by 11.07 t/ha (14.8%), sugar content by 1.00% (relative 7.1%) and sugar yield by 2.08 t/ha (23.0%). The trials with fungicide application were characterized by the highest mean root yield obtained with the Libero hybrid (98.49 t/ha), sugar concentration with the Iris sort (16.23%) and sugar yield with the Merak hybrid (12.67 t/ha).
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