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24 maj 2023 · On apple (Malus x domestica Borkh), Alternaria-associated symptoms include leaf blotch and subsequent fruit spots and can lead to 85% defoliation and up to 80% infested fruits per orchard...
Leaf spot on apple trees can be caused by various fungal and bacterial pathogens that infect the leaves, leading to the formation of spots. Leaf spot diseases thrive under specific environmental conditions, including warm, wet weather and extended periods of leaf wetness.
23 lut 2024 · In this study, we identified and analyzed apple leaf-spot disease in the Yantai apple-growing region in China. Among the three apple leaf-spot diseases, Alternaria leaf spot had the highest incidence in the Yantai area, followed by Marssonina leaf spot and Glomerella leaf spot.
26 sie 2020 · Over the last decade, Alternaria leaf and fruit spot disease caused by Alternaria species complex has created epidemic like condition all over the world. The infection begins in spring when...
4 dni temu · Bitter rot and Glomerella leaf spot (GLS) are two distinct diseases of apple fruit and foliage caused by members of the ascomycete fungal genus Colletotrichum. Although GLS is restricted to subtropical and, in some areas, to temperate climates, bitter rot is responsible for significant yield loss worldwide, particularly during the postharvest period. Initially thought to be caused by just two ...
27 wrz 2021 · There are a total of 5,170 disease images with a resolution of 3,000 × 3,000 pixels, including those of five species of the Glomerella leaf spot (Colletotrichum fructicola), Apple leaf mites (Panonychus ulmi), Mosaic (Apple mosaic virus), Apple litura moth (Spodoptera litura Fabricius), and Healthy leaves.
In apples (Malus domestica Borkh.), some species of Alternaria have been reported as responsible for damage in leaves as well as in young and mature fruits causing leaf blotch, fruit spot, and moldy core diseases in susceptible varieties such as Fuji, Royal Gala, Red Delicious and Golden Delicious [1, 2, 3].
