Dark leaf and pod spot (Alternaria brassicae) on oilseeds (Brassica napus) in Lithuania

I. Brazauskiene and E. Petraitiene
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I. Brazauskiene: Plant Protection Department, Lithuanian Institute of Agriculture, Academy Dotnuva, LT-5051, Kédainiai District, Lithuania *
E. Petraitiene: Plant Protection Department, Lithuanian Institute of Agriculture, Academy Dotnuva, LT-5051, Kédainiai District, Lithuania *

Plant Protection Science, 2002, vol. 38, issue SI2-6thConfEFPP, 384-387

Abstract: Dark leaf and pod spot caused by Alternaria brassicae (Berk.) Sacc. is a serious problem both in winter and spring oilseed rape (Brassica napus L.) in Lithuania. According to ten years' data, the spread of this disease on winter oilseed rape siliques was 31.2-100%, and the severity 3.4-25.0%. The cultivars Ceres, Accord and Kasimir were used in the trials. Through the years 1997-2001 the incidence of Alternaria blight on spring oilseed rape (cv. Star and Maskot) was 94.5-100% and the severity 1.5-20.5%. Every year the severity of the disease was highly influenced by the meteorological conditions - precipitation and temperature. Fungicides, used at the end of flowering stage (DC 69) or when the first spots of the disease appeared on pods, were effective against dark pod spot.

Keywords: Alternaria blight; incidence and severity; prochloraze; tebuconazole (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:38:y:2002:i:si2-6thconfefpp:id:10498-pps

DOI: 10.17221/10498-PPS

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