Description :

By yasuo uchida sep 09 2020 last version phyllosticta leaf spot fruit blotch and canker of the apple its etiology and control classic reprint other fungi that can cause apple leaf spots in the northeast include phoma pomorum the cause of phoma leaf and fruit spot phyllosticta solitaria the. Phyllosticta causes circular leaf spots with brown reddish borders the spots can be really large covering a large area of the leaf initial symptoms include small watersoaked regions on the leaves lesions become more apparent with a ring like pattern at alter stages. Other fungi that can cause apple leaf spots in the northeast include phoma pomorum the cause of phoma leaf and fruit spot phyllosticta solitaria the cause of apple blotch colletotrichum gloeosporioides cause of apple bitter rot and phomopsis mali the cause of phomopsis canker and phomopsis fruit decay. Apple blotch fungus phyllosticta solitaria shiny black blotches develop on fruit edges of lesions are irregular with radiating outgrowths foliage symptoms are characterized by light gray spots with a dark dot in the center elongated sunken light colored lesions with black dots are formed on veins midribs and petioles of the leaves