Other diseases, such as dollar spot, are favored by low nitrogen fertility. Disease problems may also be encouraged by nutrient deficiencies, too much thatch, improper mowing, improper watering and other cultural and environmental factors. In most cases, detecting a disease indicates an underlying problem that needs to be addressed. Fungicides are usually not necessary. In the few cases they are, they should be part of a total management program and not a quick-fix or sole solution.
Good management is essential to prevent insect pests from destroying turf, too.
The recommended ways to fertilize, water and mow a specific turf are intended to keep it growing vigorously. A vigorous, healthy lawn is more able to withstand minor insect infestations and injury. Insect problems can be encouraged by improper management. Early detection of insect pest problems is also important. Patterns of insect problems often develop at the same time in the same place each year.