Occurrence of broomrape and major diseases on sunflower in 1998 and their effect on yields
1999
Masirevic, S. (Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Yugoslavia))
During 1998, which was favourable for sunflower production, we monitored the occurrence and severity of major diseases and broomrape in most sunflower-growing regions of Yugoslavia as well as in a wide network of small- and large-plot trials. The occurrence of diseases during the year was very uneven, and as such it affected sunflower seed yields and oil content. In some of the regions, major Phomopsis attacks were once again recorded even in hybrids that were up to that point considered field resistant. This potential change of virulence should be carefully monitored in the future as well. White rot (Sclerotinia sclerotiorum) was less widespread than in previous years. Another characteristic of the year 1998 were extremely severe aphid attacks. High temperatures and drought that occurred in August significantly reduced damages caused by Phomopsis and Sclerotinia sclerotiorum. Broomrape has been gradually spreading and causing damage in some fields in the Backa Topola and Subotica areas. Resistant hybrids successfully with stood attacks by this floriferous parasite.
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Este registro bibliográfico ha sido proporcionado por Unassigned data from Yugoslavia