Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Sorghum rust incidence'?

A. the concept on Sorghum, disease caused by Colletotrichum graminicola.
B. Sooty Stripe (Ramulispora sorghi) disease symptoms presence/absence.
C. Stem borer (Chilo partellus) incidence on sorghum plants.
D. Incidence of rust on sorghum plants. Causative agent: Puccinia purpurea.

Answer: Incidence of rust on sorghum plants. Causative agent: Puccinia purpurea.