Fusarium (brown spots) in the lawn - What to do?

Irregular, light green patches appear on the lawn at first. Later these become straw-colored (reddish brown). As the turf renews itself from the center, it can look like a ring or an eye. Fusarium occurs in summer when temperatures are high and humidity is high. Poa pratensis, Festuca spp. and Agrostis speciesare frequently affected.

For the development of Fusarium There are various causes, the most common being:

• one-sided fertilization

• too much nitrogen

• Potassium deficiency

• extreme pH values, either above pH 7 or below pH 5

• Lawn felt

• Drought

• Compacted soil

To prevent patches, the usual measures for a healthy lawn should be observed:

• Minimization of lawn thatch with the help of Turbogreen lawn aerator

• Regular mowing

• Balanced irrigation in summer

• regular fertilizing; in the autumn a Potassium-rich fertilizer be used

• Scarifying, aerating and preferably also sanding

• Aim for the optimum pH value, which should be between 5.5 and 6.5.