We are coming up on the months where it will be time to apply the early application of pre-emergents on grass. Another application will be done in the spring. This is not only specific to golf courses, any lawns can apply these techniques to control weed growth. Weeds are extremely hardy and seem to evolve to escape eradication, so it is important to remember that any successful weed control plan must be long term and have consistency. Pre-emergents are just one important part of any weed control strategy.
Bermuda goes dormant in the winter. Pre-emergents work by creating a barrier that allows the dormant grass to survive but does not allow the weeds and Poa Annua to grow. It is important to note that pre-emergents do not work on weeds that already exist. They affect seeds prior to germination. This application is a crucial element to a preventative weed control plan on the course.