HowLAWN DISEASE

Develops

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ENVIRONMENT The pathogen already exists in the lawn as a dormant spore and is waiting for the right environmental conditions to develop.

GRASS TYPE The type of grass along with the cultural practices of proper lawn fertilization, watering, and thatch control, often dictate the amount of damage that may occur.

INSECTS ON LAWNS Insects want to lay eggs in well-maintained lawns where it can supply the most and best food for the young.

INSECT INVASIONS A healthy, maintained lawn will recover faster from an insect invasion than an unhealthy, or poorly, maintained lawn.

WATERING THE LAWN The best time to water is early morning. Late afternoon to evening increases the chance for disease development.

MOWING AT THE PROPER HEIGHT Set your mower so that you do not remove more than 1/3 of the grass blade. Improper mowing heights and wet turf lead to lawn damage.

THATCH An intermingled layer of leaves, roots, stems, and other organic material that may build up at the soil line, can increase the incidence of disease and insect activity. If the level exceeds a 1/2″, then it can act as an incubation chamber for many diseases and insects.

Tips to Prevent Lawn Disease

PATHOGEN

THREE FACTORS NEED TO INTERACT IN ORDER FOR GRASS DISEASES TO DEVELOP.

The factors are the HOST PLANT, the PATHOGEN, and the ENVIRONMENT. It is often called the disease triangle. The pathogen (the disease-causing organism) will infect the

host plant (your grass) if the environment that favors the lawn disease to grow is present. The environment has to exist for a long enough time for the pathogen to develop and infect

the host plant. If this occurs, then the lawn disease can cause damage to the plant.

HOST PLANT ENVIRONMENT

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