Winter Overseed Trials: A 5-year Summary Of Best Overseeded Grasses

A.E. Dudeck
University of Florida, Gainesville
Institute of Food and Agricultural Sciences

Note: Published in Florida Turf Digest 15(5):12-13. 1998

Throughout the southern United States, golf courses, sports turfs, and some home lawns are overseeded annually with cool-season turfgrasses during winter months. This practice provides a live, green, turf ground cover, which improves playing surfaces when bermudagrass or other warm-season turfgrasses are not actively growing. Turfgrass breeders and seed producers continue to develop new grasses resulting in numerous cool-season grasses for overseed purposes. In addition to new cultivars, seed producers annually formulate new grass mixtures and blends. Timely trials are needed to evaluated performance and to provide information to potential users of overseed grasses. We have been conducting overseed trials under golf course fairway and putting green conditions at Gainesville, FL over the past 12 years The purpose of these studies is to evaluate the suitability of selected cool-season turfgrass species, cultivars, mixtures, and/or blends for overseed purposes in Florida. Summarized in Table 1 is a listing of those cool-season grasses out of a total of 210 that produced best turf quality in our tests covering only the last five years from 1992-1997. The summary table is organized by cultivar, species or mixture of cultivars, and by golf course management practice. The complete report of our 1997-1998 study may be obtained in its entirety from our Florida Turfgrass Home Page at http://hort.ifas.ufl.edu/turf.

Table 1.
Listed in alphabetical order is a summary of those cool-season grasses having best turf quality under golf course management conditions during their respective years of test from 1991 to 1997 at Gainesville, FL.

Test Year Entries Cultivar Species Fairway
Management
Green
Management
1997-1998 43 Atlantis/Fuzzy/Imagine/Lynx Mix - +
Catalina/Winterplay Mix - +
DW 42 CBl + +
DW 184 CBl + +
DW 208 CBl + -
Power/Stardust Mix + +
1996-1997 37 Academy PR + -
BARUSA Pt4 RB - +
Citation III/Winterplay Mix + +
Gator II PR + -
HWY PR + -
Image/Lynx/Pegasus PR + -
LRFB7 PR + -
MB45 PR + -
Plaisir PR + -
Premier II PR + -
Resort PR + -
Sabre II/AT90163 Mix - +
1995-1996 30 Firstcut Mix - +
LRF-B7E PR + -
LRF-C7 PR + -
Manhattan II PR + -
Omega III PR + -
Premier III PR + -
PT 1-93 RB - +
Snowbird RB - +
Sunrise Primo Elite PR + -
Turfstar Premium PR + -
1994-1995 29 Bright-star/Winterplay Mix + +
Divine PR + -
Marvelgreen Supreme PR + -
Medalist 8 PR + -
Palmer II PR + -
Penncross CB - +
Pleasure+ PR + -
Pro-Am RB - +
ProCup CB - +
PT-GH-92 RB - +
Sunrise Primo PR + -
TMI-EXFLP94 PR + -
Top Hat PR + -
Winterplay RB - +
Winterplay/Seaside Mix - +
1993-1994 29 Alliance Blend PR + -
Colt RB + +
Cypress RB + +
Danish Common RB + +
LPT-CT RB + +
LPT-HWY RB + +
MB1-1 PR + -
PT-GH-89 C11 RB + +
PT-GH-92 RB + +
TS-2 Mix + +
Winterplay RB + +
1992-1993 33 Alliance Blend PR + +
CBS PR + +
Club Choice PR + -
Cypress RB - +
Florida Green Mix - +
Futura 2000 PR + -
Marvelgreen Supreme II PR + +
Marvelgreen/Laser Mix + +
Medalist Gold PR + +
Sonoran PR + -
Southern Select PR + +
Sunrise Primo PR + +
TMI-EXP PR + +
VIPIIE PR + +
89-666 PR + +

Species identified as CB=creeping bentgrass, CBl=creeping bluegrass, PR=perennial ryegrass, RB=rough bluegrass, and Mix=mixture of two or more species. A + sign indicates best turf quality under given golf course management conditions.