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Apple scab is a common disease of plants in the rose family (Rosaceae) that is caused by the ascomycete fungus Venturia inaequalis. While this disease affects several plant genera, including Sorbus, Cotoneaster, and Pyrus, it is most commonly associated with the infection of Malus trees, including species of flowering crabapple, as well as cultivated apple. The first symptoms of this disease are found in the foliage, blossoms, and developing fruits of affected trees, which develop dark, irregularly-shaped lesions upon infection. Although apple scab rarely kills its host, infection typically leads to fruit deformation and premature leaf and fruit drop, which enhance the susceptibility of the host plant to abiotic stress and secondary infection. The reduction of fruit quality and yield may result in crop losses of up to 70%, posing a significant threat to the profitability of apple producers. To reduce scab-related yield losses, growers often combine preventive practices, including sanitation and resistance breeding, with reactive measures, such as targeted fungicide or biocontrol treatments, to prevent the incidence and spread of apple scab in their crops

A close-up of a ripe apple on a tree surrounded by lush green leaves. The apple is green with red small buts of red colouring coming through.

Gypsy moth (Lymantria dispar) on an apple tree closeup

Closeup of diseased apples growing on an Apple Tree.

apples destroyed by fruit tree disease

High resolution grenn apple. Very crip at 100% view. Clipping path included. Also check my red apple. Please, take a time to comment.

The texture of a delicious fresh apple as a background. Apple as a material for a designer macro.

Rotten apple on trees in a vegetable orchard. Autumn seasonal harvest. red ripe apples on a branch in the garden. Drops of water on wet apples after rain. Organic farming, gardening, vegetarian eco food.

apple orchard with deceased ripening apples on the trees in end of august

Ecological apples hanging on a tree in the autumn sunlight

Apple tree fruits and leaves infected by Alternaria mali desease. Orchard problems

apple trees orchard farm food organic agriculture fruit

Rotten apple on white background

Ripe red apples growing on tree branch.

Golden Delicious apple badly damaged by hail

Apples on trees in a vegetable orchard. Autumn seasonal harvest. red ripe apples on a branch in the garden. Drops of water on wet apples after rain. Organic farming, gardening, vegetarian eco food.

A hole in a apple caused by a codling moth.

Wasp damage on an apple on a tree.

apple orchard with deceased ripening apples on the trees in end of august

Close up of a red apple.

Apple Disease with Monilia Fungus hanging on Apple Tree Branch. Infected Rot Apple - Harvest Problem.

Apple scab caused by Venturia inaequalis on green and red Gala apple on tree in the orchard. Malus domestica

The apples (variety Rewena) and the leaves were damaged by the hail.

Macro photograph of the skin of a green apple.

Fresh and Healthy apples hanging outdoor

Fruits Infected by the Apple scab Venturia inaequalis. Orchard. Macro.

Ripe green apples on old apple tree in Normandy

Twisted and blackened leaves on an apple tree

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Free Images: "bestof:Apple chlorotic leafspot virus201.JPG cs Apple chlorotic leafspot virus Chlorotická skvrnitost jabloně ACLSV - Apple chlorotic leafspot virus je virová"

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