Figure 1.
Area of occurrence of the most important fungal diseases in nurseries in Poland in the period 2012–2021
Table 1.
Changes in the production area of forest nurseries managed by the State Forests in 2012–2021
| Year | Forest nurseries area [ha] | Total production (trees and shrubs) [thousand pcs.] |
|---|---|---|
| 2012 | 2,281.89 | 848,527.85 |
| 2013 | 2,188.04 | 914,100.04 |
| 2014 | 2,103.89 | 876,653.26 |
| 2015 | 1,993.28 | 820,233.14 |
| 2016 | 1,949.51 | 758,552.60 |
| 2017 | 1,916.82 | 750,292.46 |
| 2018 | 1,880.80 | 728,941.09 |
| 2019 | 1,837.38 | 784,392.03 |
| 2020 | 1,801.73 | 750,162.90 |
| 2021 | 1,773.77 | 709,542.60 |
Figure 2.
Location of Powdery Mildew occurrence in the years 2012–2021, divided by Regional Directorates of the State Forests
Figure 3.
Location of Damping-off occurrence in the years 2012-2021, divided by Regional Directorates of the State Forests
Figure 4.
Location of Needle-cast of pine occurrence in the years 2012–2021, divided by Regional Directorates of the State Forests
Figure 5.
Location of Gray Mold occurrence in the period 2012–2021, divided by Regional Directorates of the State Forests
Figure 6.
Location of Pine Twisting Rust occurrence in the period 2012–2021, divided by Regional Directorates of the State Forests