Plant disease and Rhizoctinia disease

Plant disease noun - A disease that affects plants.

Rhizoctinia disease and plant disease are semantically related. In some cases you can replace phrase "Rhizoctinia disease" with "Plant disease", this phrases are similar.

Rhizoctinia disease noun - Disease caused by rhizoctinia or fungi of Pellicularia and Corticium.

Plant disease and rhizoctinia disease are semantically related. You can use "Plant disease" instead a noun phrase "Rhizoctinia disease".