Botrytis mold (gray mold) Causative agent: Botrytis cinerea fungus Botrytis cineria Pers. Fr. Previously, it was classified as an incomplete fungus, but in the new classification it has become an ascomycete fungus. Symptoms and damages of Botrytis mold. Symptoms of the disease appear on the leaves, stems, and fruits in different forms, and the disease appears in the form of yellow spots on the upper surface...
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Yellowing of tomato leaves Tree diseases What are the causes of yellowing of tomato leaves and its treatment? Causes of yellowing of tomato leaves There are many possible causes of yellowing of tomato trees, including: Diseases and pests Diseases and pests are common causes of yellowing of tomato leaves, as follows: Fungal diseases: Fungal diseases often affect the leaves of the tomato tree and cause them to yellow, and it is rare…
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Tomato leaf mold disease What is tomato leaf mold disease? Tomato leaf rot is a fungal disease that affects tomato plants in humid environments. It grows and reproduces in moisture, attaching to tomato leaves. Once it appears on one plant, it quickly spreads to the rest of the crop, causing major losses. It is one of the most common diseases affecting tomatoes...
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Black mold disease in tomatoes Black mold disease in tomatoes, the cause of the disease is the fungus Alternaria solani, Alternaria alternata, and the fungus that causes the disease spreads in warm, humid weather. The fungus that causes the disease infects ripe fruits, and spots appear on the fruits that are pale to dark brown in color, affecting the tissues of the fruit’s skin. Especially at the neck of the fruit, which quickly reaches...
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Anthracnose in tomatoes. The causative agent: the fungus colletotrichum coccoids. Suitable conditions for anthracnose in tomatoes: 1) High humidity of more than 90% 2) Temperature ranging between 20-30 degrees Celsius. 3) Increased irrigation rates and increased rainfall. 4) The presence of wounds caused by insects. The cause of anthracnose in tomatoes. Symptoms are caused by several types of fungi from the genus Colletrichum.…
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Tomato leaf curl disease What is the tomato leaf curl disease virus? Tomato leaf virus is among a number of viral diseases that infect plants and hinder their growth, ultimately leading to their death. It spreads to other plants physically through the Whitefly. This insect picks up the virus while feeding on an infected plant. Once the whitefly is infected…
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White rot disease in tomatoes (Sclerotinia rot - cotton rot - white cotton rot - Sclerotinia disease - wood rot - stem rot) The importance of white rot disease in tomatoes: The spread of white rot disease in tomatoes: The infection with this disease is widespread in protected crops While the disease is less serious in crops...
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Bacterial speck is caused by a bacteria called Pseudomonas syringae pv. Tomato: This disease has been known since the early 1930s, but it did not cause heavy losses. However, cold and humid environmental conditions helped in the development of the disease. Symptoms of bacterial dot disease: Symptoms include the following: Small black dots with a diameter ranging between 1 to 2 cm form...
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Bacterial canker in tomatoes The bacteria that cause this disease are widespread in most parts of the world, especially Europe. They are found from time to time in the United Kingdom and cause many problems in the Channel Islands. Bacterial diseases of tomatoes. These bacteria are a small number of the Solanaceae family, the most important of which are tomatoes. There has been no infection with peppers and eggplant under Natural infection conditions. He gets this…
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Vegetative diseases: late blight is a fungal disease caused by a fungus called Phytophthora infestans - the cause of vegetative diseases: Phytophthora infestans Suitable conditions for vegetative diseases: The chances of the disease occurring increase in weather conditions in which low temperature and high humidity prevail. The following has been observed: (10: 15ºC) and the atmosphere is saturated with humidity, giving ciliate bacteria a ratio of more than 5:35 bacteria per bag...
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