Oxalis spp.

Rust (fungus – Puccinia sorghi): The importance of this rust on oxalis is that its alternate host is corn. On oxalis, the rust first appears as neat, yellowish dots near the margins of the leaves; later pale orange pustules break out on the leaf. Usually does not cause enough damage to warrant control.

Beet Curly Top (virus): (See the section on Curly Top)

Powdery Mildew (fungus- Microsphaera russellii): White, powdery blotches on foliage.

Smut (fungus – Ustilago oxalidis): Reported in Texas.

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