Purple spot lesions on asparagus spears. 
Diseased asparagus crowns: Phytophthora on left, healthy at center, Fusarium crown rot on right. 
Stand decline and dead stems due to Fusarium crown rot. 
Purple spot, caused by Stempylium vesicarium on asparagus stems. 
Asparagus crown shown reddish brown discoloration and rot due to Fusarium. 
Rust pustules (uredinia) on asparagus stem. 
Overwintering stage (telia) of rust on asparagus stem. 
Early season rust pustule (aecium) on asparagus stem.
Disease Management
- Epidemiology and Management of the Diseases Causal to Asparagus Decline (pdf)
- Asparagus Integrated Pest Management (pdf)
- Phytophthora Rot of Asparagus (pdf)
Research Articles
- Rust Resistance in Asparagus F1 Hybrid Populations (pdf)
- Variation for Rust Resistance Within Asparagus Cultivars (pdf)
- Morphology and Taxonomy of Species of Phomopsis on Asparagus (pdf)
- Purple Spot and Stemphylium Leaf Spot of Asparagus (pdf)
- Development of Rust on Asparagus Cultivars After Inoculation with Basidiospores, Aeciospores, and Urediniospores of Puccinia asparagi (pdf)
- Effects of Wounding and Wetting Duration on Infection of Asparagus by Stemphylium vesicarium (pdf)
- Effect of Crop Debris Management on Severity of Stemphylium Purple Spot of Aspargus (pdf)
- Two Components of Slow-Rusting in Asparagus Infected with Puccinia asparagi (pdf)
- Effect of Rust on Yield of Susceptible and Resistant Asparagus Cultivars (pdf)