| This balance may change dramatically by conditions that favour a renewed epiphytotic. |
| Important environmental factors that may affect development of plant diseases and determine whether they become epiphytotic include temperature, relative humidity, soil moisture, soil pH, soil type, and soil fertility. |
| An epiphytotic may occur when a pathogen is introduced into an area in which it had not previously existed. |
| The bacterial leaf scorch epiphytotic, a plant epidemic among oleanders, continues. |
