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The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed] A relatively small number of apple cultivars are responsible for an enormous proportion of yearly apple production.
The apple maggot (Rhagoletis pomonella), also known as the railroad worm (but distinct from the Phrixothrix beetle larva, also called railroad worm), is a species of fruit fly, and a pest of several types of fruits, especially apples. This species evolved about 150 years ago through a sympatric shift from the native host hawthorn to the ...
The codling moth (Cydia pomonella) is a member of the Lepidopteran family Tortricidae. They are major pests to agricultural crops, mainly fruits such as apples and pears, and a codling moth larva is often called an "apple worm". Because the larvae are not able to feed on leaves, they are highly dependent on fruits as a food source and thus have ...
You can shorten these branches by making a slanted cut perpendicular to the nearest fruit spur, where you want the tree branch to end. Cut right above the spur or bud, about a 1/4-inch away from ...
Eriosoma lanigerum, the woolly apple aphid, woolly aphid or American blight, [1] is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is a true bug and sucks sap from plants.
Concentric rings of acervuli are visible on the lesion surface. Bitter rot of apple is a fungal disease of apple fruit that is caused by several species in the Colletotrichum acutatum and Colletotrichum gloeosporioides species complexes. [1] It is identified by sunken circular lesions with conical intrusions into the apple flesh that appear V ...
Aleternaria mali can overwinter as mycelium on dead leaves on the ground, in mechanical injuries in twigs, or in dormant buds. [1] Primary infection occurs about one month after petal fall the following year. [2] The disease is favoured by temperatures between 77 and 86 °F (25–30 °C), and by wet conditions. [1]
Hoplocampa testudinea. Klug, 1816. Hoplocampa testudinea, the apple sawfly or European apple sawfly, is a species of sawfly in the family Tenthredinidae. It is native to Europe but has been accidentally introduced into North America where it became invasive. [1] The larvae feed inside the developing fruits of the apple tree.