- Typical rust spores on upper and lower surfaces
- Rust-affected crop
Widespread in most peanut areas north of Kingaroy. The Sutherland variety has good tolerance to rust.
Can cause major crop losses if it starts early and is uncontrolled. Once rust starts in a crop, dews and fogs are sufficient to create a serious epidemic.
Small, yellow spots quickly produce typical 'rusty' pustules containing spores. Pustules are not visible for 7-10 days after infection. They are usually found underneath the lower leaves and spread very rapidly. Infections are often first found as a 'hot spot' with a few plants covered in rust.
The spores can blow long distances between crops.
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