Ash condition in cities before Agrilus planipennis occurrence and ash die-back disease

Data on ash condition in urban greenery plantations before occurrence of such invasive organisms as Agrilus planipennis and ash die-back triggered by the pathogen Chalara fraxinea. It was found that ash condition in most of the surveyed plantations was unsatisfactory. Emergence of at least one of the invasive types will result in degradation of ash plantation condition.