English edit

Noun edit

stubborn disease (uncountable)

  1. A disease of citrus trees characterized by stunted growth and misshapen fruit, caused by Spiroplasma citri.
    • 1966, Israel Journal of Botany - Volumes 15-17, page 131:
      The extremely low number of control plants infected by stubborn disease suggests that natural spread of stubborn in the vicinity of the experiments is much slower than that reported for psylla-borne greening in South Africa (Schwarz, 1964).