Seeds need water, air and appropriate temperature to germinate and establish. Don’t allow the seed or seedling to dry out. Correct watering firstly leads to optimised germination and at a later stage to a very attractive and stable lawn.
Be aware of the composition of the seed mixture after establishment of the turf. All species require water for excellent growth but some need even more to sustain growth, e.g. Lolium perenne has higher water requirements than Festuca arundinacea.
We recommend using a source of water close to the turf field, with high quality water that does not harm the plant’s performance. Do not use any sewage water and if you want to use water from other sources we advise having it analysed first. The frequency of watering depends largely on the amount of rain and the evaporation of moisture from the grass. The best time for watering is in the evening, when evaporation is minimal.
Guidelines for turf grass irrigation
Below you find a table which should be merely seen as a guideline for irrigation your turf grass. You can use it as a tool for deciding whether irrigation is necessary and if yes, how much water should be given. The guidelines start from a rainfall level of 0 mm.
|ETc estimated mm||guidelines for irrigation: top quality|
|Month||ETc/day||Etc/month||# applications / month||quantity / application (mm)|
|(month = 30 days)||Lp/Pp||Frc/Frt||Fa||Lp||Frc/Frt||Fa|
|ET c = evapotranspiration x * crop coefficiency||(source: Landlab 2009)|
Example of how to use the table:
- If you deal with Lp/Pp meeting a hot period in June and you wish to know how much mm to irrigate, then follow this guideline:
- in June you actually have to irrigate 1 time
- Lp/Pp needs 10 mm per irrigation application
- Total irrigation quantity will be 10 mm which is less than 20% of ET of 60 mm for June in the Nordic climate zone.