solani is also present in most potato production regions every year but has a significant effect on yield only when frequent wetting of foliage favors symptom development. solani is generally not an issue in the less humid Pacific or inter-mountain regions. solani is problematic in tomato production areas east of the Rocky Mountains and in the midwest, however, A. Early blight can also be caused by Alternaria tomatophila, which is more virulent on stems and leaves of tomato plants than Alternaria solani. Primary methods of controlling this disease include preventing long periods of wetness on leaf surfaces and applying fungicides. If uncontrolled, early blight can cause significant yield reductions. Despite the name 'early,' foliar symptoms usually occur on older leaves. The pathogen produces distinctive 'bullseye' patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. 16(12): 1003 (1882)Īlternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. Jones & Grout, Annual Report of the Vermont Agricultural Experimental Station 9: 86 (1896) Certified organic growers must use pesticides approved by their organic certifying agency.įor more information on home vegetable garden fungicides: Contact your county Extension agent.Alternaria solani (Ellis & G.

* Active ingredients generally considered ‘organic’. (cucumber mosaic virus, tobacco mosaic virus, tomato spotted wilt virus) (bean bacterial blight, cabbage black rot, cucumber angular leaf spot, onion bacterial blight, pepper bacterial spot, potato blackleg, tomato bacterial spot) SNS 244 All Natural, Organocide, Oleotrol M VEGETABLEīayer Advanced 3 in 1, Bayer Advanced Disease Control Also, be sure to read and follow all label instructions of the fungicide that you select to ensure that you use the product in the safest and most effective manner possible. Check that the active ingredient on the label of the product that you select is the ingredient that you are looking for. When selecting a product from this list, be sure to note the product name carefully, as several products can have very similar names and contain similar active ingredients. This listing is not intended to be exhaustive, but references fungicides that, when used properly, can be effective in controlling the most common diseases of vegetables grown in home gardens. All of the fungicides listed on this fact sheet have been found on shelves at southern Wisconsin home garden centers.

This guide is intended to help identify some of the common, and most suitable, fungicides available for disease control in home vegetable gardens. However, if diseases become especially problematic, fungicide treatments are also an option for home gardeners. Cultural methods include proper site selection, plant spacing, staking, watering, fertilization, and perhaps most importantly, use of disease-resistant vegetable cultivars. Typically, cultural methods are the preferred options for disease management in home vegetable gardens. Authors: Amanda Gevens, UW-Madison Plant Pathology with contributions by UW-Madison Plant Pathology undergraduates Ken Cleveland and Lauren Thomasĭiseases of vegetable plants can pose a challenge for the home gardener.

Immunox early blight tomato