Increase air flow
Obstructions to air flow such as fences, banks, hedges, trees and even herbaceous borders will encourage surface moisture/humidity and therefore Fusarium Patch, especially if they are situated at right angles to the prevailing wind.
Operations that open up the site and allow free airflow will reduce disease incidence. e.g. thinning trees, hedges or under growth, removing fences.
Unfortunately dense swards which are growing on moist soils are more susceptible to Fusarium Patch than thin swards. Turf with a high shoot density creates shade at the base of the sward and air movement is reduced, creating ideal conditions for Fusarium Patch development.