Original scientific paper

THE EFFECT OF WHEAT SEED DRESSING IN ORGANIC AGRICULTURE

Vesna Samobor ; Križevci College of Agriculture
Dijana Horvat ; Križevci College of Agriculture
Marijan Jošt ; JOST Seed- Research – Križevci

Abstract

Fifteen years ago started program of wheat breeding for sustainable (organic)
agriculture, and the first cultivar from that program (Vesna) was released. In seed
production for organic agriculture acceptable seed dressing is necessary.
Seed dressing with the two ecologically acceptable preparations (Fitolife susp.
0.1% and Ekorast + Bordeaux mixture 3+3%) and one standard chemical Vitavax
200FF (200 ml/100 kg seed) at seven genotypes (Divana, Koleda, Vesna and four new
breeds for organic agriculture) were tested.
Grain yield, yield components, and grain infestation with pathogens were
observed. Ekorast + Bordeaux mixture and Vitavax 200FF had significantly higher
grain yield than the treatment with Fitolife. Significantly differences in yield
components between three treatments registered too.
In spite of extremely wet growing season during vegetation period wheat where
not protected by fungicide.
In general the Vitavax 200FF treatment had the lowest level of infestation, while
the highest infestation was observed at Fitolife treatment. Significant differences were
detected in infestation with the saprophyte fungi Alternaria alternata (Fitolife 44.4%;
Ekorast + Bordeaux mixture 33.8% and Vitavax 200FF 25.8%). As seed germination ability depends on the presence of Fusarium graminearum and F. nivale, it is important
that at all three treatments the cumulative attack of the two pathogens were below 10%.
Based on the results it can be concluded that in organic wheat production seed
dressing with Ekorast + Bordeaux mixture (3+3%) could be acceptable replacement for
the standard chemical seed treatment with Vitavax 200FF.

Keywords

Seed treatment; organic agriculture; Ekorast; Fitolife; Vitavax 200FF; Bordeaux mixture

Hrčak ID:

69988

URI

https://hrcak.srce.hr/69988

Publication date:

3.3.2011.

Article data in other languages: croatian

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