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#LATE BLIGHT ON BASIL DOWNLOAD#

And it affects tomato fruit - especially green ones. Uncontrolled it will kill plants faster than any other disease. Petunias, which are closely related to tomatoes and potatoes, can also be infected by late blight and show similar symptoms.

Copper is not very effective on late blight. Use a product that contains chlorothalonil. If you want to try to control late blight with fungicides, you need to begin spraying fungicide now – even before you see symptoms – and you need to continue spraying regularly. Leave the bag ‘cooking’ in sunlight for several hours to kill plant and pathogen, then put in the trash.įruit can rot quickly once infected, but any part not affected is safe to eat as this pathogen does not produce a toxin.

Be prepared to destroy your plants when late blight starts to become severe.

Spray fungicides preventively and regularly and/or.

Examine your tomato and potato plants thoroughly at least once a week for signs of late blight.

You need to act quickly to protect your garden-grown tomato and potato plants and to make sure that your plants don’t become a source of spores that could infect commercial farms, as late blight spores are easily dispersed by wind. Firm, brown spots develop on tomato fruit. Spots begin tiny, irregularly shaped and brown. Sometimes the border of the spot is yellow or has a water-soaked appearance. More images.)Ĭlassic symptoms are large (at least nickel-sized) olive-green to brown spots on leaves with slightly fuzzy white fungal growth on the underside when conditions have been humid (early morning or after rain). They begin small and firm, then quickly enlarge, with white fungal growth developing under moist conditions that leads to a soft rot collapsing the stem. One of the most visible early symptoms of the disease is brown spots (lesions) on stems. It has never occurred this early and this widespread in the U.S. Late blight is the same disease that caused the Irish Potato Famine in the 1840s. Home gardeners need to be on the lookout for Late Blight – a very destructive and very infectious disease that’s killing tomato and potato plants in gardens and on commercial farms in the eastern U.S.

Meg McGrath’s Long Island vegetable disease photo gallery.

Right: Late blight lesions on tomato stems Via Meg McGrath, Department of Plant Pathology and Plant-Microbe Biology, Cornell University. Update: : Late blight webinar, Thursday July 2, 7:30 to 9:30 p.m. Update: : See also: Late blight factsheet and webinar announcement

Update: : See also: Cornell Chronicle article. While the timer shows that the recording is already 38 minutes into the session, it is actually very early in the presentation when the recording begins.

#LATE BLIGHT ON BASIL DOWNLOAD#

Allow program to download to your computer and a PowerPoint presentation will appear on your screen. Update: : View late blight webinar for home gardeners hosted on July 2 by Rutgers and Cornell Cooperative Extension. Update: : Photos of late blight on potatoes added to Meg McGrath’s plant disease photo gallery. Update: : View new Late Blight FAQ and Late Blight: Corrections of Misinformation by Meg McGrath. Update: : Cornell Plant Disease Diagnostic Clinic late blight factsheet has been updated to list chlorothalonil products registered for home garden use in New York State. Update: : Fungicide info for home gardeners added to Meg McGrath’s late blight photo gallery. Update: : New factsheet from NYSIPM program: Late Blight: A Serious Disease of Potatoes and Tomatoes.

Update: : Late Blight Q&A from the Northeast IPM Center. Update: : See new post for 2010 season, Avoid the late blight blues.