Soil scientists gave this town its own entry in the books — Freehold sandy loam, the light, fast-draining ground that farmers here worked long before the subdivisions arrived. Agritech Turf Maintenance Inc reads a lawn the way growers in Monmouth County have always read a field: what the ground holds, what it lets go, where the grass thins under a maple. Mowing and edging are the visible half of it; the other half is knowing a sandy yard drinks nothing like the heavier marl ground a mile away. By late June the difference shows in color, and by September it shows in how quickly a lawn comes back. There is a plain satisfaction in a stripe running true across dirt that used to grow corn.