Fairway Terminology InfoGuide
Misleading Terms That Deal With
Unacceptable After Cut Appearance
Bobbing — An undesirable cutting unit movement that leaves an unacceptable wave-
like appearance. Bobbing refers to the machine movement not the aftercut appearance.
As a general rule, mowing slower should lessen the problem.
Overlap stripes — An unacceptable after cut appearance of stripes that occurs in the
area of the cutting unit overlap.
Clumping — The discharge of clippings into unsightly lumps or rows. Excessive
clippings besides being unsightly may smother the grass or act as incubators for disease.
Streak— A line of taller grass that has not been cut. Single streaks are the result of a
bent or nicked bedknife. Multiple streaks are more often the result of rifling due to heavy
contact between the reels and bedknife. Streaks may also occur in the areas of overlap
between cutting units or where a tire rolls down an area before it is cut.
Mismatch — The difference in height of cut of two adjoining cutting units. This may
occur between units in a multiple cutting unit machine, or between passes by a single
machine. Mismatch is caused by dissimilar HOC settings or rollers that are not parallel to
the cutting units.
Stragglers — Scattered uncut grass blades throughout the cutting unit path. The uncut
blades stand above the general line of the effective height of cut. Cutting unit sharpness
adjustment, clip versus grass length, and resiliency are the key factors affecting this
condition.
Interchangeable Terms
The following four terms are used interchangeably in the golf industry. The terms do not
describe different aftercut characteristics. There are many different causes for this wavy
appearance.
Marcelling — An unacceptable wavy pattern on the surface of mowed turfgrass.
Corrugation — An unacceptable wavy pattern on the surface of mowed turfgrass.
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