This spring more than 30 hectares (60 football grounds) were planted with native saplings ont he plots that were cleaned from invasive tree species last year. More than a hundred thousand saplings were planted into the ground after a applying special soil preparation technology. Not only oak trees were planted but also ten other native tree species and several bushes.
This year forestry works will continue in the project areas near Nagykőrös. One part of the job is to replace the saplings planted in 2009 that were ruined due to several reasons. The replacement is a routine job that should be done in the first year of afforestation in almost each case in order to have the saplings in due density so that they could form a closed forest within a few years. The forestry authority has a strict inspection in the 3rd year and will accept the renewal of forestry only if the young forest is closed enough.
On the other part of the project area, on approx. 30 hectares we have tested a totally new forestry technology (still unspread in Hungary) under the guidance of Dénes Dobrosi, forestry engineer. On these areas the majority of the saplings planted a year ago were ruined partly due to the extremely droughty spring and summer, partly due to the spreading of the young shoots of black locusts formerly logged. Since black locust – when logged or its roots are torn upon soil preparation – starts to grow young shoots quickly. Our last year’s experiences confirm that this process cannot be prevented, not even with a chemical treatment applied on only the logged locust blocks, it can be only decreased or made slower. The young locust shoots growing spontaneously will drain the vital water from the oak saplings that grow slower. Locusts and other weeds mean insurmountable rivals to the native saplings mainly on drier production areas. With this new technology 60 cm deep and 75 cm wide stripes are made by a ploughing machine that prepares the seedbeds.
The seedbeds made will accommodate the saplings. This method combines the advantages of several planting technologies. In the soil prepared in this way the water balance shows improvement, the elimination of weeds and the nursing is more efficient. At the same time – unlike in the complete soil preparation when the undergrowth is destroyed totally – there will be untouched areas of 180 cm wide between the seedbeds where the undergrowth will remain intact and the species will survive the dangerous period while the saplings grow and become a forest again.
In the course of the spring works we planted a mixed forest, similar to the natural one. Besides the saplings of the pedunculate and also downy oaks, grey and black poplars, Hungarian ash, early maple and other native maple species, field elms, wild pear, crab apple, prindle-berry, and of other bushes were planted. Finally the works ended with acorn sowing.