Apple

Some examples of targeted crops include cotton, tobacco, sweet corn, rice, peanuts, and even fruits such as apples, oranges, and many more.

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".

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.

Fire blight, also written fireblight, is a contagious disease affecting apples, pears, and some other members of the family Rosaceae.

Rosellinia necatrix is a fungal plant pathogen infecting several hosts including apples, apricots, avocados, cassava, strawberries, pears, hop. citruses and Narcissus, causing white root rot.

The host plants of greatest importance include rubber, tea, coffee, cacao, grapefruit, orange, nutmeg, mango, apple, coca, and kola.

Similar to Gymnosporangium juniperi-virginianae and Gymnosporangium globosum, the fungus infects a wide range of Rosaceae, such as apple, hawthorn and quince trees, and also requires an evergreen host such as eastern red cedar or a number of other juniper species to complete its life cycle.

Though primarily known as a disease of apples, this plant pathogen can infect a wide range of hosts, including pears, strawberries, tomatoes, corn, and rice.

Monilinia fructigena is a plant pathogen in the fungus kingdom causing a fruit rot of apples, pears, plums, peaches and cherries.

Specific replant disease (also known as sick soil syndrome) is a malady that manifests itself when susceptible plants such as apples, pears, plums, cherries and roses are placed into soil previously occupied by a related species.

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.

Native to the Mediterranean, it has been reported as a pest of apple orchards and vineyards in Western Australia and recorded as a parasite in Canada.

It is a plant pathogen infecting several hosts including alfalfa, apples, asparagus, tomatoes, citruses and chickpea.

Botryosphaeria stevensii (Apple sphaeropsis) is a fungal plant pathogen that causes cankers on several tree species including apple and juniper as well as causing cankers on grape vines.

Neofabraea malicorticis is a plant pathogen that causes bull's-eye rot on apples and pears.

Valsaria insitiva is a plant pathogen, that causes perennial canker in apples and almonds.

Xylaria mali is a plant pathogen that causes black rot on apple.

Valsa ceratosperma is a plant pathogen infecting apples and pears.

$37 million in apple crops were lost