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Black sigatoka is a leaf-spot disease of banana plants caused by the ascomycete fungus Mycosphaerella fijiensis (Morelet), also known as black leaf streak. It was discovered in 1963 and named for its similarities with yellow Sigatoka, which is caused by Mycosphaerella musicola (Mulder), which was itself named after the Sigatoka Valley in Fiji .
Banana freckle is easily propagated and spread from plant to plant by rain splash and movement of infected tissue or fruit. Management of the disease consists of cutting out infected leaves, using the paper bag method, fungicide application, and proper sanitation techniques it can be stopped by applying vegeta to it .
"Segmented Banana" Chilling injury to fruit One of the less common plantain diseases is exostentialis clittellus referred to by most plantain and banana farmers as "segmented banana". This is a result of the peel forming tiny inter-fruit membranes which cause the banana to appear as though it has been sliced before it is peeled.
Banana plants are among the largest extant herbaceous plants, some reaching up to 9 m (30 ft) in height or 18 m (59 ft) in the case of Musa ingens.The large herb is composed of a modified underground stem (), a false trunk or pseudostem formed by the basal parts of tightly rolled leaves, a network of roots, and a large flower spike.
The leaves begin to wilt and may buckle at the base of the petiole. As the disease progresses, younger leaves are affected, turn yellow and crumple and the whole canopy begins to consist of dead or dying leaves. [5] The leaf symptoms of Fusarium wilt can be confused with those of Xanthomonas wilt.
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Most banana cultivars which exhibit purely or mostly Musa acuminata genomes are dessert bananas, while hybrids of M. acuminata and M. balbisiana are mostly cooking bananas or plantains. [23] Musa acuminata is one of the earliest plants to be domesticated by humans for agriculture, 7,000 years ago in New Guinea and Wallacea. [24]