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The thatch can soon be so dense as to prevent water, nutrients and oxygen penetrating the lawn’s root system, resistance to wear and new growth subsequently weaken. Disease and drought resistance is reduced with weeds and moss becoming dominant. Scarification not only removes harmful thatch, it also reduces the amount of moss and weeds. In addition the compacted soil surface is loosened thus enabling it to breathe and absorb water, oxygen and nutrients. Due to the thinning out achieved by scar