![]() ![]() Following artificial inoculation of potted plants in growth chambers and of field-grown plants, sporulation of P. belbahrii in artificial-inoculated plants in growth chambers and in field. One hundred and two entries of Labiatae (Syn Lamiaceae), belonging to 22 genera and 53 species, were tested for sensitivity to P. basilicum serve as hosts of Peronospora belbahrii in Israel, thus possibly aiding its spread and survival. Here, we report that some members of the Labiatae family beside O. Seed transmission and seedling trade were suggested as possible causes for rapid spread. The pathogen was reported to have similarly spread widely in Europe, the USA and Asia. Within one year, the disease was reported all over the country, causing devastating economic damage to basil crops. For this reason, gardeners should always buy basil plants from a local source or start their own plants from disease-free seeds.īasil downy mildew is host specific and will not affect any other plants, so there’s no need to worry about it spreading to other vegetables, flowers or herbs.Downy mildew in sweet basil ( Ocimum basilicum L) was first recorded in Israel in late 2011. In these areas, new infections often start when infected plants are brought in from southern regions or infected seeds are purchased and grown. Basil downy mildew does not overwinter in cold northern climates. Follow all label instructions carefully. Basil downy mildew does not live in the soil, so there’s no need to take any measures to sterilize the soil or drench it with a fungicide this does nothing to control the pathogen. Potassium bicarbonate fungicides and those based on Bacillus subtilis are effective when applied to upper and lower leaf surfaces early in the season and on a frequent basis.
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