Asperisporium caricae is an ascomycete fungus that is a plant pathogen, found in North and South America. It is responsible for the black spot disease on papaya trees. It affects generally leaves and fruits at any time. Sporodochia of Asperisporium caricae was growing under side of leaf, dark blackish brown to black, stroma well-developed, erumpent.
Based on two articles as below, I got two options to reduces the black spot disease naturally:
- spraying with wettable sulphur
- spraying with a baking soda solution, also mentioned in rose black spot
Protecting Pawpaw Plants Against Black Spot Disease
If you live in south eastern Queensland and grow pawpaw, it’s worth a quick health check right now. Mild, calm, showery, humid winter weather is perfect for observing outbreaks of pawpaw blac...
Bacterial and Fungal Leaf Spot | Planet Natural
Infected plants have brown or black water-soaked spots on the foliage, sometimes with a yellow halo, usually uniform in size.
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