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Pycnidia can be found in the center of the said lesions. Pycnidia are fruiting bodies of the fungus. When the lesions become numerous often the leaves turn yellow, then brown, shriveling up and eventually dropping off the plant altogether. [1] Tomato leaf with septoria leaf spot symptoms of dark spots and yellow surrounding region
Pydiflumetofen has fungicidal effects against a wide range of crop pests. These include Alternaria, grey mould (Botrytis cinerea), Cercospora (leaf spot), septoria, powdery mildews (e.g. Uncinula necator), and scab (e.g. Venturia pyrina). As a result, it has potential use in crops including cereals, corn, soybeans, vegetables, peanut, curcubits ...
Septoria leaf spot infects the blueberry plant through spores ejected from infected leaves and stem lesions left on the ground from the previous harvest season. These spores infect the crop and small white/tan leaf lesions form on the plant and the stem in early May. These lesions continue to develop and multiply through September. [62]
Septoria apiicola can survive on seeds. Several species of passion flower are infected by several species of Septoria , and a fungus, which has been going by the name Septoria passiflorae but which is probably an undescribed species, has been used to control the invasive Passiflora tarminiana in Hawai'i.
Septoria selenophomoides is a fungal plant pathogen infecting orchids. It causes leaf spots, starting with small yellowish lesions on the plant's leaves and darkening to brown or black. [1] [2] If the infection develops further, the leaves and fruit fall from the orchid and spread the infection. [2]
Management of Septoria leaf spot of potato is important because once introduced into a new area due to its soil borne and long lasting nature it is impossible to eradicate. Today, Septoria malagutii and other septoria disease are controlled with a number of different methods including the use of fungicides and cultural controls.