Water the soil and feed plants regularly to keep them growing well – healthy plants can better resist pests and diseases. Look for disease-free seeds and only save seed from disease-free plants. If you don’t have enough space for this, consider growing tomatoes in pots and potatoes in grow bags. Suppression of leaf spot diseases, once plants have been infected, can be accomplished through sanitation and the application of fungicides. Each has recognizable symptoms that can be easily distinguished. Choose a different spot each year (avoid planting in the same part of the garden for at least four years). Chlorothalonil, mancozeb, or maneb offer the most broad-spectrum activity against the common tomato foliar fungal diseases: late blight, early blight, and. The five best-known tomato fungal diseases are anthracnose fruit rot, buckeye rot, early blight, late blight and septoria leaf spot. Pick off infected leaves and fruit, and cut off affected stems, dipping your pruners in isopropyl alcohol before making each cut. Practice crop rotation and ensure potatoes and tomatoes plantings never follow. Remove diseased plants and bin or burn them. Also, Bordeaux Mixture has been withdrawn from sale. Fungal pathogens can persist on old material in the soil or on other ‘host’ plants, like nearby weeds, for up to a year. Dithane 945 was the most effective blight protection that I used regularly, but is no longer available. Remove dead or damaged leaves and make sure there’s good air movement around the plant. There are many chemical products on the market that claim to be effective in treating. The treatments consisted of four foliar fungicides (Victory 72 WP, Toplite, Azoxystrobin and mancozeb 80 WP) applied to two tomato varieties (MT56 and Tengeru. Destroy plants after harvest as the disease can spread to seeds.Įarly blight often occurs during humid weather and is most likely to attack plants under stress. There is currently no tomato blight treatment that is 100 effective. Tanya as main plots fungicides Ivory 72 WP, Volar MZ 690 WP and Topsin-M 70 WP as sub plots and. The disease can be difficult to treat once established, but as soon as symptoms are noticed, apply a protective fungicide to prevent it from spreading. The treatment factors were tomato varieties Meru, Cal-J and.
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