The regional water authority Waterschap Vechtstromen and Enschede contractor NTP are conducting a field trial, in collaboration with the UT, at the Athletics track on our campus from 13 to 17 July to control the Japanese knotweed.
Control method
The method for combating the problem that is used basically consists of ozone. Ozone is a powerful form of oxygen with high oxidation power. Different ways of injecting ozone have been tested and the first results are promising. Since 2018, NTP have been carrying out research in co-operation with the Waterschap Vechtstromen into the use of ozone to control the Japanese knotweed. Recently, very good results have been obtained. These have given cause to carry out a field trial.
Field trial
NTP (ISCO3, www.isco3.nl) will carry out the field trial near the Athletics track. On Monday 13 July, a processing container with the required equipment has been put in position. This container is set up at the athletics track. The system has been installed on 13 and 14 July. The area with Japanese knotweed that is to be treated will be fenced off. Treatment with ozone will take place from 15 to 17 July during regular working hours (8.00-17.00 hours). An expert process operator will be continuously present during theprocess. Ozone measurements will be carried out within the fenced-off area.
Why are we combating Japanese knotweed?
Every year,Japanese knotweed is a recurring problem in the Netherlands. It has become a real plague for several sectors. It is an invasive plant species that asserts itself in a fairly aggressive manner. The plant spreads rapidly and literally destroys other plants. The original vegetation is stifled. As a result, Japanese knotweed damages biodiversity and is harmful to, for example, water bank protection, works of art and dikes. The spreading of Japanese knotweed mainly takes place locally, via the roots. However, human activities such as mowing and moving soil pose the greatest risk in spreading Japanese knotweed over greater distances.
Questions?
If you have any questions regarding this message, please contact Dennis Scheper (project leader NTP), tel: 053-4614411.
