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Late Blight Disease of Potato
Late blight is a disease of potato and tomato. The pathogen that causes late blight is Phytophthora infestans. The disease is most severe in cool, wet weather. The pathogen overwinters in infected tubers and volunteer potato plants. The disease is spread by wind and rain-splashed spores. The symptoms of late blight include leaf lesions, fruit lesions, and stem cankers. The leaves turn brown and die. The fruit lesions are dark and wet. The stem cankers are sunken and black. The disease can cause significant crop losses. Late Blight – Definition Diagram Disease Cycle . Late Blight – Definition Diagram .
Potato Blight Disease
The potato blight disease is a fungus that attacks the potato plant, causing lesions on the leaves and stems, and black spots on the tubers. The disease can cause the potato plant to die, and the tubers to rot. The fungus is spread by spores, which can be carried by the wind, or by insects and other animals. The best way to prevent the disease is to plant resistant varieties of potatoes, and to practice crop rotation.
Late Blight Diagram
The diagram illustrates the life cycle of late blight, a disease that affects potatoes and tomatoes. The disease is caused by the fungus-like organism Phytophthora infestans and is spread by wind, rain, and insects.
The disease begins with the appearance of small, water-soaked lesions on the leaves of the plant. These lesions will grow and merge, eventually covering the entire leaf. The leaves will then turn brown and die.
The fungus will also infect the fruit or tubers of the plant. The fruit will turn black and rot, while the tubers will become soft and mushy. The disease can cause significant yield losses and can be fatal to the plant.
Disease Cycle of Late Blight of Potato
Late blight is a serious potato disease caused by the oomycete pathogen Phytophthora infestans. The disease cycle of late blight is unique in that it can be completed both in the field and in the greenhouse. In the field, the pathogen overwinters in infected tubers or in plant debris. In the spring, the pathogen produces sporangia that release zoospores, which infect potato plants. The pathogen then spreads throughout the plant, invading the leaves, stems, and tubers. The disease progresses rapidly, and infected plants typically die within 10 to 14 days. Late blight can also occur in greenhouses, where it is often spread through the use of infested soil, water, or plant debris. In greenhouses, the pathogen can also be spread by people, equipment, or clothing.
Disease Management
Late blight is a serious potato and tomato disease that can cause extensive damage to these crops. The disease is caused by the fungus-like oomycete pathogen Phytophthora infestans. Late blight is most commonly found in humid and warm climates. The disease can cause severe yield losses and can also contaminate produce with toxins that are harmful to humans.
Management of late blight disease begins with the use of resistant cultivars whenever possible. Infected plants should be removed and destroyed to prevent the spread of the disease. Fungicides can be used to control the spread of the disease, but must be used in a timely manner for best results. Proper irrigation and good cultural practices are also important for preventing the spread of late blight disease.
