Abstract
The establishment of a quality Kentucky bluegrass (Poa pratensis L.) sod can be accomplished by seeding with a predetermined blend of Kentucky bluegrass cultivars or by vegetative reestablishment from rhizomes after harvest. This study was initiated to compare the regrowth capability of ‘Glade’, ‘Ram I’. ‘Parade’, ‘Rugby’, and ‘Touchdown’ Kentucky bluegrass after sod harvest. Sod was uniformly removed on 19 May 1984, and the area was reestablished to 100% coverage. Sod was harvested again on 16 Sept. 1986, and the reestablishment study was repeated. Percentage coverage after regrowth was determined monthly. Vegetative data on rhizomes, roots, sod strength, and tiller numbers were collected following the first harvest. Glade and Touchdown Kentucky bluegrass recovered most quickly, and Parade and Ram I were slow to recover. Rhizome weights were greatest for Glade and Touchdown, and tiller numbers per plant were highest for Parade and Ram I. The data indicate that cultivars that put much of their energy into aboveground growth (tillers) recover more slowly than cultivars that channel their energy into belowground (rhizome) development.
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