Full TGIF Record # 56834
Item 1 of 1
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Higgins, J. M.; Walker, R. H.
Author Affiliation:Auburn University, Auburn, AL 36849
Title:Spring transition of overseeded bermudagrass
Meeting Info.:51st Annual Meeting, Birmingham, AL, January 26-28, 1998
Source:Southern Weed Science Society Proceedings. Vol. 51, 1998, p. 88.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:1
Keywords:TIC Keywords: Spring transition; Cynodon dactylon; Cynodon transvaalensis; Lolium perenne; Transitional overseeding; Cultural methods; Herbicides; Scalping; Vertical mowing; Coring; Urea; Pronamide; Diclofop; Metribuzin
Abstract/Contents:"Perennial ryegrass (Lolium perenne) is a cool-season turfgrass used to overseed bermudagrass (Cynodon spp.) athletic fields, golf courses, and home lawns. The overseeded turfgrass provides aesthetic value to the dormant bermudagrass during the winter months. In the spring, the dormant bermudagrass breaks dormancy and begins to "green up". During this phase of bermudagrass growth, the established perennial ryegrass competes with it for light, nutrients, space, and water. This period of competition between these turfgrasses is called the "spring transition" period. Typically, the environmental conditions during this transition period favor the growth and survival of the perennial ryegrass. Turfgrass managers need methods that will provide timely rmoval of the perennial ryegrass from the bermudagrass during the transition period. A field experiment was conducted in 1997 at Auburn, AL to evaluate the influence of various cultural turfgrass management practices and chemical treatments on the removal of perennial ryegrass from 'Tifway' hybrid bermudagrass. The bermudagrass was maintained at a mowing height of 5/8" and overseeded in the fall of 1996 with a three-way blend ofperennial ryegrasses. The perennial ryegrass blend contained 'Affinity', 'Blackhawk', and 'Laredo' varieties and was overseeded at a rate of 15 pounds per 1,00 square feet. Treatments evaluated for removal of perennial ryegrass included various cultural management practices and chemical treatments. Cultural practices evaluated as treatments included: scalp mowing the turfgrass to a mowing height of 1/4", vertical mowing in two directions, and core aerification with 1.2" hollow tines. Chemical treatments included: urea fertilizer applied at either 2 or 10 pounds of nitrogen per 1,000 square feet, pronamide (Kerb) applied at a rate of 1 pound (Lb) active ingredient (ai) per acre (A), dichlofop (Illoxan) applied at 1 Lb ai/A, and metribuzin (Sencor) applied at 0.5 Lb ai/A. A non-ionicsurfactant was combined with the pronamide and dichlofop treatments at a rate of 0.25% v/v. Cultural treatments were applied on April 29, 1997 and chemical treatments applied on April 30, 1997. Scalp mowing and vertical mowing cultural treatments were repeated on May 7, 1997. Urea fertilizer treatments were applied with a drop spreader and chemical treatments applied with a CO[2 pressurized backpack sprayer calibrated to deliver 30 gallons per acre. Urea fertilizer treatments were allowed to remain on the perennial ryegrass foliage for two hours, then the fertilizer was watered-in with irrigation. Treatments were arranged in a randomized complete block design with three replications. Data collected included percent perennial ryegrass cover, percent perennial ryegrass injury, and percent bermudagrass cover. Data were collected at 1,2,3,4, and 5 weeks after treatment (WAT). Cultural treatments did not affect the removal of perennial ryegrass and the transition to bermudagrass was comparable to the untreated check. Urea fertilizer applied at 2 pounds of nitrogen per 1,000 square feet provided similar results as cultural treatments. However, all other chemical treatments significantly reduced the perennial ryegrass cober compared to the untreated check. Urea applied at 10 pounds of nitrogen per 1,000 square feet and metribuzin treatments reduced perennial ryegrass cover to 5% within 1 WAT. Pronamide and dichlofop reduced perennial ryegrass cober to 17 and 13%, respectively by 5 WAT. Percent bermudagrass cover was not affected by cultural treatments; however, chemical treatments provided greater bermudagrass cover than the untreated check."
Language:English
References:0
See Also:Other items relating to: TROVER
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Higgins, J. M., and R. H. Walker. 1998. Spring transition of overseeded bermudagrass. South. Weed Sci. Soc. Proc. 51:p. 88.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=56834
If there are problems with this record, send us feedback about record 56834.
Choices for finding the above item:
Find Item @ MSU
MSU catalog number: SB 611 .S6 v.51
Find from within TIC:
   Digitally in TIC by file name: swssp2003
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)