Why Are My Banana Tree Leaves Turning Black?

Question

From Botswana, Africa
Sandy soil
Drip irrigation

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Answer 1

This will, usually, occur from fungal/bacterial infections. This is caused by being overwatered, or remaining too wet for too long without a chance to dry out some in between waterings.

A fungicide will be useful, here. This article will help you with fungicide use: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm