Agriculture Reference
In-Depth Information
Fig 5.30 Freckle on a banana leaf.
Fig 5.28 Severe freckle symptoms on a bunch.
Fig 5.29 Freckle on fruit in an Asian market.
Fig 5.31 Detail of freckle symptoms.
Steam-clean or wash the shed and equipment at least
once a week.
fruit result in speckling, which develops within a few days.
The fungus does not produce spores on the fruit.
•
Cool fruit immediately after packing.
•
Importance
Deightoniella spot is a minor disease in well-managed
plantations.
Detrash plants regularly.
•
DEIGHTONIELLA FRUIT SPOT
■
Cause
The fungus
Deightoniella torulosa
.
Management
•
Specifi c management measures are not warranted if leaf
spot and speckle management recommendations are
implemented.
Symptoms
Sunken, dark brown or black spots, 2-4 mm wide, appear
on fruit. The spots are surrounded by a prominent dark
green halo. The disease may be present on all bunches at all
stages of maturity, and is more prevalent on the outside and
towards the blossom end of the fruit.
FRUIT SPECKLE
■
Cause
Various fungi, mostly
Colletotrichum musae
and
Fusarium
spp.
Symptoms
Fruit speckle is characterised by reddish-brown to black
minute spots, 0.5-1 mm in diameter, often with an oil
or water-soaked margin. All surfaces of the fruit can
Source of infection and spread
Fungal spores develop on dead banana leaves during wet
weather and are discharged into the air. Spores landing on
