Lawns that are discolored, slow-growing, or have invading weeds or other pest problems may not be properly fertilized. Fertilizer is important for healthy, vigorous plant growth and development. Because many of the required nutrients for turfgrass are found naturally in the soil, fertilization practices focus on the supply of three primary nutrients — nitrogen, phosphorus, and potassium. Nitrogen is the only nutrient that turfgrass needs on a regular basis. Lawns may occasionally be deficient in iron, and fertilizers containing iron may be supplemented. As nitrogen is applied, both root and shoot growth increases. If too much nitrogen is applied too frequently, shoots will continue to grow yet root growth will slow, leaving the turf vulnerable to problems.
Insect feeding can cause grass to turn yellow or brown, or die, especially if the grass is already stressed. Damage usually begins in small, scattered patches, which may merge into large dead areas. However, lack of proper cultural care and use of inappropriate grass species in a particular location are more likely responsible for unhealthy or dying lawns than insects.Disease-causing pathogens, excessive or inappropriate use of chemicals such as fertilizers and herbicides, and dog urine also produce damage resembling that of insects. Before taking any insect control action, be sure that it is insects causing the problem and not something else.
Since the Association is not responsible for pest control, treatment nor the fertilisation of private gardens, it is advisable for owners to implement a good pest control and fertilization regime using a specialist firm. For further information concerning garden care click here.