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Chemical control of Botrytis cinerea and Sclerotinia sclerotiorum on dwarf snap beans

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Abstract

Two sprays of vinclozolin (0.5 kg a.i. ha−1) or procymidone (0.5 kg a.i. ha−1), the first at the beginning of flowering and the second two weeks later, gave the best control ofBotrytis cinerea on dwarf snap beans (Phaseolus vulgaris). Good results were also obtained with iprodione and with thiophanate-methyl. Vinclozolin and procymidone at the same program were the most active fungicides againstSclerotinia sclerotiorum. Treatments with the latter two fungicides resulted in increased yields of pods and had no influence on colour and quality of the pods. Residue levels were below the tolerances.

Samenvatting

Twee bespuitingen met vinchlozolin (0,5 kg a.i. ha−1) of procymidon (0,5 kg a.i. ha−1), de eerste in het stadium ‘begin bloei’ en de tweede 14 dagen later tijdens de peulzetting, waren voldoende omB. cinerea in stamslabonen te bestrijden. Tevens werden goede resultaten verkregen met iprodion en thiofanaat-methyl. Vinchlozolin en procymidon gaven volgens hetzelfde schema toegepast ook de beste werking tegenS. sclerotiorum. Toepassingen van deze laatste twee fungiciden leverden een hogere peulopbrengst en hadden geen invloed op de kleur en de kwaliteit van de peulen. Het residugehalte in de peulen lag beneden de toelaatbare grens.

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References

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This research was subsidized by the ‘Instituut tot Aanmoediging van het Wetenschappelijk Onderzoek in Nijverheid en Landbouw’ (IWONL).

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Vulsteke, G., Meeus, P. Chemical control of Botrytis cinerea and Sclerotinia sclerotiorum on dwarf snap beans. Netherlands Journal of Plant Pathology 88, 79–85 (1982). https://doi.org/10.1007/BF01977340

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  • DOI: https://doi.org/10.1007/BF01977340

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