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

Which of the following definitions best describes 'Stem rot incidence calculation - Method'?

A. The mean leaf width for a plant 75 days after planting.
B. Calculation of incidence as the percentage of dead plants.
C. Calculation of total pods mass per area.
D. Total seed (kernel) mass calculated as per unit area after shelling.

Answer: Calculation of incidence as the percentage of dead plants.