Watering turf with water that contains algae can impact the growth of algae in the turf itself, hence the ongoing need of algaecide use. Algae thrive in moist environments, so providing additional water through irrigation can create favorable conditions for algae growth. Algae require sunlight, water, and nutrients to grow, and if water containing algae is used for irrigation, it can introduce algae spores or cells onto the turf surface.

Some of the negative impacts:

 If the conditions are right, algae can quickly multiply and form dense mats on the surface of the turf, which can hinder the growth of the grass underneath. The impact of altered pH and nutrient levels, further impacting the health and growth of the turfgrass.

Therefore, it's important to prevent algae-contaminated water from being used for irrigation to minimize the risk of algae growth in turfgrass. Proper maintenance practices, such as improving drainage, ensuring proper airflow, and maintaining balanced soil fertility, can also help reduce the likelihood of algae problems in turf, however ultimately a good algae free water source is a good place to start.

Algaecides and their long term impacts: