Table 1.
Monthly precipitation and average monthly temperature in the examined cities in 2017–18.
Table 2.
Mean annual values of air temperature (oC) in 2017–18 and in decades of period 1971–2000 in individual locations.
Fig 1.
The distribution of micro- and macroelements in the black locust leaves according to location. A). The distribution of black locust pests and pathogens in the locations under study and their effect on the health of the trees—B). The influence of micro- and macroelements in black locust leaves on the distribution of diseases and pests in relation to the health of the trees—C). KP—Krakow park; PP—Poznan park; WP—Wrocław park; KS—Krakow street; PS—Poznań street; WS—Wrocław street; Aphis craccivora–A. craccivora; Appendiseta robiniae–A. robiniae; Macrosaccus robiniella–M. robiniella; Parectopa robiniella–P. robiniella; Obolodiplosis robiniae–O. robiniae; Nematus tibialis–N. tibialis; Sitona lineatus–S. lineatus; Erysiphe polygoni–E. polygoni; Pleospora robiniae–Pl. robiniae; Phylosticta robiniae–Ph. robiniae; chlorosis; Q-health quality; PotT–perimeter of tree; n–number of trees.
Table 3.
The health of black locust trees.
Table 4.
A. The chemical composition of R. pseudoacacia leaves grown in Kraków. B. The chemical composition of R. pseudoacacia leaves grown in Poznań. C. The chemical composition of R. pseudoacacia leaves grown in Wrocław.
Fig 2.
Damage to black locust trees caused by biting insects and the number of piercing and sucking insects found on leaves in 2017–2018.
Fig 3.
The occurrence of fungal infections and chlorosis of black locust trees in 2017–2018.
Table 5.
Statistical parameters for CCA models.