Spots on fruit
Banana spotting bug
Cause: Feeding (sucking) by banana spotting bug, Amblypelta lutescens lutescens, usually on the exposed outer curve of the fingers.
Solution: Damage is more severe on blocks adjacent to rainforest. No specific treatments required. If more than 5% of bunches are affected, spot spray.
Cause: The fungi Colletotrichum musae, Fusarium oxysporum and Fusarium semitectum (formerly known as Deightoniella torulosa). Spores are produced in large numbers on dead leaf material during wet conditions and are spread in air currents to the fruit.
Solution: Fruit speckle is generally a minor disease in well managed plantations that use a leaf spot spray program.
Pin-head black spot
Cause: Rupturing of lenticels, most likely a reaction to environmental conditions, particularly water-logging and extended wet weather. This is often confused with infection by Deightoniella torulosa.
Solution: Ensure adequate surface and internal drainage for plants. Avoid planting in poorly drained soils.