Australian tomato leaf curl virus, a whitefly-transmitted geminivirus causing a disease of tomatoes in Northern Australia. 235-7. Septoria leaf spot is one of the most common tomato plant leaf diseases. Tomato Plant Disease: Septoria Leaf Spot. "Curl", curling from leaf tip toward the stem, even though some use the terms interchangeably is usually associated with a tomato disease and that is not what you have. Description of the problem: The first few branches on my tomato plant are fine (growing horizontally), but they have a bit of tomato leaf curl (I think). A In the pics you sent … Continue reading Q&A: What’s killing my tomatoes? ACKNOWLEDGMENTS On a positive note, it may not be pretty but at least it … As I mentioned on your other post, It is called 'tomato leaf roll'. With no other symptoms of disease, no treatment is necessary. Often appearing on plants grown under intense light, there is no cause for concern or need for treatment of purple tomato leaves. According to Wikipedia, tomato yellow leaf curl virus is found in tropical and subtropical regions. Virus-infected plants often show other symptoms of a problem. If it is verticillium wilt, how long will it persist in the soil? One way to prevent the spread of this virus is through the use of insecticides. Tomato Yellow Leaf Curl Virus. Tomato Viruses | Mosaic, Leaf curl. Tomato leaf roll. Leaf curl can be quite frustrating to deal with as multiple conditions can cause it or a combination of any and the only way to deal with it is by identifying the exact cause. Proceedings of the 4th International Conference on Plant Protection in the Tropics, Kuala Lumpur Malaysia, 28-31 March 1994, pp. Tomato leaf curl is often an environmental change due to stress. The stress could either be environmental, biological or chemical related. Symptoms include stunting and distortion of foliage, mottling and streaking of stems and leaves. The plant becomes stunted, and leaflets curl and grow increasingly smaller, exhibiting a puckered appearance. It causes leaves to twist and curl, and is transmitted between plants by the whitefly. Q My usually prolific tomato plants have been a disaster this year, with all the leaves curling, browning, drooping and dying back. First, the Grosse Lisse, then the Burnley Surecrop and now the Romas have all succumbed. The tomato leaf curl virus (ToLCV) can attack tomato plants. Phew! You can first detect this fungus as it creates a small, circular spot with a grayish-white center and dark edges. Small black spots may show up in the center. The leaves fold up and in from the certain of the leaf vein (making sort of a mini-taco appearance). Leaves may curl up when a plant gets a virus. Remember the key to tomato leaf curl is prevention. → Tomato plant leaves respond to various stresses by rolling or curling up. Whiteflies cause this disease and help it to spread from plant to plant. Once it curls, it will most likely not straighten itself out. Spread in many ways, including sap-sucking insects, garden tools, hands, implements, even old trellises. Viral Infection. Affected tomato plant leaves turn yellow, wither, and fall off. Moulds, mildews on tomatoes Purple leaves are caused by expression of anthocyanin due to light exposure. At the first signs of symptoms, remove and destroy plants.