Full TGIF Record # 19491
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Publication Type:
Author(s):Powell, A. J. Jr.; Tapp, Linda
Title:Residual activity of certain chemicals on renovation with tall fescue/perennial ryegrass
Source:Kentucky Turfgrass Research. 1986, p. 37-46.
Publishing Information:Lexington, KY: University of Kentucky, College of Agriculture, Cooperative Extension Service
Series:Progress Report 303
Keywords:TIC Keywords: Residual effects; Festuca arundinacea; Lolium perenne; Herbicide residues; Growth regulators; Turf renovation; Overseeding; Weed infestation; Digitaria sanguinalis; Crabgrass control
Abstract/Contents:Summarizes 3-year study concluded in 1986 to evaluate the residual effects of several commonly used turf chemicals as they relate to renovation and establishment. For the 1986 tests, Roundup was applied to a Kentucky bluegrass turf on April 25 to kill the existing Kentucky bluegrass. Four days later, several herbicides and growth regulators were applied to individual plots at label recommended rates. Weekly overseedings were made on May 6, May 13, May 20 and May 27. For each seeding, a vertical mower was used to loosen the thatch and dead grass. After removing this material, five pounds per 1000 sq ft of Ky 31 tall fescue or Derby perennial ryegrass were broadcast over the area. Two applications of MSMA at 2 lb ai/A were applied in July to reduce crabgrass competition. Treatments and results are presented. Also provides a table summarizing % stand reduction and crabgrass control of several similar tests conducted from 1984 to 1986. The table can be useful in making management decisions if renovation is planned after chemical application has already occurred. Conclusions from these studies are: 1) there was very little difference in grass seed germination between the four weekly seedings, 2) by September or October the chemical treated plots were of equal or better quality than the check treatment which was severely affected by crabgrass, 3) both Dacthal and Pendimethalin showed best selectivity, 4) surface disturbance (double thatching) prior to seeding increased crabgrass germination, 5) perennial ryegrass appeared to be less affected by treatments than tall fescue (may be due to fast germination and vigor of perennial ryegrass) and 6) Cutless, Triclopyr and Acclaim gave surprising crabgrass control. Now preemergence materials affected crabgrass germination much more than seeded grasses.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Powell, A. J. Jr., and L. Tapp. 1986. Residual activity of certain chemicals on renovation with tall fescue/perennial ryegrass. KY. Turfgrass Res. p. 37-46.
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