Fungicides
Fungicides work by disrupting the metabolism of the plant pathogen (disease). In simple terms this disruption impedes the development of the pathogen and results in its death.
Systemic fungicides
A systemic fungicide works by the plant absorbing the fungicide through the cuticle and underlying tissues. They act by killing the spores and hyphae that have penetrated the plant surface.
These work best during periods of active grass growth. Systemic fungicides are absorbed by grass roots and leaves and move into the sap.
They can control diseases for between 4 to 6 weeks, and are more specific than contact fungicides. They are however, more likely to cause strain resistance, more so than contact fungicides.
Contact fungicides
Contact fungicides are normally used to control foliar (leaf) diseases. They are normally applied to the leaf and stem of the grass plant and inhibit the fungi on the plant surface so that the fungus is not able to enter and infect the plant.
They work at all times of the year including cooler months when there is less active growth. These will last between 10 – 14 days.
Systemic vs Contact
Contact fungicides can only kill or eliminate the activities of pathogens, whilst the systemic fungicide can prevent some fungi infections when they are applied and during the absorption process by the plant leaf or roots.
Always spray fungicides in early morning
Pesticides
Pesticides should only be used when and where they are needed.
Insecticides penetrate insects in three different ways, through the outer covering (skin), through the mouth, or through the breathing holes (spiracles).
For more detailed information on the various common diseases and treatments please consult our resource section.
For application details of fungicides and pesticides please consult our resource section.
Disinfectants
Jeyes Fluid, Jik and Potassium Permanganate are powerful bactericides/fungicides but are instantaneous in action and have no residual effect.
Jeyes and Jik are normally used at a concentration of 1% (1 litre/100 litre water) and sprayed in the cool of the day to avoid scorch.
Disinfectants are also useful for cleaning implements, and machinery being used on greens with fungus infections.