The effect of fungicides on sugar beet infected with beet mild yellowing virus |
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| Authors: | H G Smith M J C Asher G E Williams P B Hallsworth |
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| Institution: | IACR-Broom's Barn, Higham, Bury St Edmunds, Suffolk IP28 6NP, UK |
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| Abstract: | Studies were made in 1989, 1990 and 1991 to establish whether carbendazim (MBC) had a direct therapeutic effect on sugar beet plants infected with beet mild yellowing virus (BMW), resulting in detectable yield benefits. In a field trial in 1989 virus-infected plots treated with carbendazim gave a significantly higher yield, of 0.66 t sugar/ha, than virus-infected plots sprayed with sulphur to control powdery mildew. This response to carbendazim in virus-inoculated plots was not repeated in subsequent trials in 1990 and 1991, and a glasshouse study showed no apparent effect on virus concentration within inoculated plants. Neither was any effect of carbendazim on symptom development observed in any of the trials or glasshouse experiments. |
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| Keywords: | fungicides virus yellows sugar beet |
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