9 Best Of Spot On Apples Best Wallpaper JPG. Although apples affected with this disorder are edible, the unattractive external appearance often arouses consumer concern and reduces salability of fruit. In an apple disease called lenticel breakdown, a nutrient deficiency causes the apples’ spots to darken and turn into brown.
A closely related fungus, venturia pyrina, causes a similar disease called pear scab on fruiting and ornamental pears only. Apple scab is a common disease of plants in the rose family that is caused by the ascomycete fungus venturia inaequalis. Bitter pit is caused by low levels of calcium in the fruit and poor distribution of calcium within the tree during fruit development.
Like any opening, lenticels are vulnerable to infection and sickness.
The species which attacks pears is closely related to but distinct from the species which attacks apples. Controlling black spot low residue apples for export > back to story > next controlling black spot. The species which attacks pears is closely related to but distinct from the species which attacks apples. Although apples affected with these disorders are edible, the unattractive external appearance often arouses consumer concern and reduces salability of fruit.
