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Tolerance of overseeded meadow fescu...

Rolfe, Ryan Edward.

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Tolerance of overseeded meadow fescue and tetraploid ryegrass to annual bluegrass control and transition herbicide programs.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Tolerance of overseeded meadow fescue and tetraploid ryegrass to annual bluegrass control and transition herbicide programs./
作者:	Rolfe, Ryan Edward.
面頁冊數:	53 p.
附註:	Source: Masters Abstracts International, Volume: 47-06, page: 3355.
Contained By:	Masters Abstracts International47-06.
標題:	Agriculture, Horticulture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1466637
ISBN:	9781109191646

Tolerance of overseeded meadow fescue and tetraploid ryegrass to annual bluegrass control and transition herbicide programs.
Rolfe, Ryan Edward.

Tolerance of overseeded meadow fescue and tetraploid ryegrass to annual bluegrass control and transition herbicide programs. - 53 p.

Source: Masters Abstracts International, Volume: 47-06, page: 3355.

Thesis (M.S.)--University of Arkansas, 2009.

Bermudagrass (Cynodon spp.) is an extensively used turfgrass species in the southern region of the United States. In many regions where bermudagrass is used, this species can be partially or completely dormant for up to 6 months, which is not desirable for many sporting activities. To combat this problem, the practice of overseeding a cool-season grass during the dormant period can produce a dense green playing surface for use when the bermudagrass is dormant. Overseeding provides obvious benefits relative to the playability of the turf, but overseeding also has several drawbacks. The major problems with yearly overseeding are weed control and the transition period from overseeded turf back to bermudagrass. Even though numerous cool-season grasses have been used and tested for overseeding dormant turf, other species should still be investigated for overseeding purposes. Two species of interest are tetraploid ryegrass (Lolium perenne L.) and meadow fescue (Festuca pratensis Huds.). Little is known about the management of weeds with these two species or the use of herbicides to aid the removal of the overseeded turf. The overall objectives of this study were to determine the impact of various Poa annua management practices on the overseeding of meadow fescue and tetraploid ryegrass and to determine best management practices for the removal of meadow fescue and tetraploid ryegrass from overseeded bermudagrass. Field trials were used to test a range of herbicide programs under these objectives. Many Poa annua control programs that have been commonly used on diploid perennial ryegrass behaved similarly on tetraploid perennial ryegrass and meadow fescue. Meadow fescue showed more sensitivity to chemical treatments that were relatively safe on other species, including ethofumesate, foramsulfuron, and fenarimol. Meadow fescue and diploid perennial ryegrasses were significantly injured by bispyribac-sodium, with meadow fescue having an almost 50% reduction in cover compared to the controls. Traditional herbicides such as pronamide, as well as numerous sulfonylurea herbicides were tested for phytotoxicity and efficacy at aiding removal of overseeded grasses. Diploid and tetraploid perennial ryegrass behaved similarly to most treatments. Meadow fescue had the lowest percent overseeded grass for most treatments and was more sensitive to the herbicides tested.

ISBN: 9781109191646Subjects--Topical Terms:

1017832
Agriculture, Horticulture.

Tolerance of overseeded meadow fescue and tetraploid ryegrass to annual bluegrass control and transition herbicide programs.
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502 $a Thesis (M.S.)--University of Arkansas, 2009.
520 $a Bermudagrass (Cynodon spp.) is an extensively used turfgrass species in the southern region of the United States. In many regions where bermudagrass is used, this species can be partially or completely dormant for up to 6 months, which is not desirable for many sporting activities. To combat this problem, the practice of overseeding a cool-season grass during the dormant period can produce a dense green playing surface for use when the bermudagrass is dormant. Overseeding provides obvious benefits relative to the playability of the turf, but overseeding also has several drawbacks. The major problems with yearly overseeding are weed control and the transition period from overseeded turf back to bermudagrass. Even though numerous cool-season grasses have been used and tested for overseeding dormant turf, other species should still be investigated for overseeding purposes. Two species of interest are tetraploid ryegrass (Lolium perenne L.) and meadow fescue (Festuca pratensis Huds.). Little is known about the management of weeds with these two species or the use of herbicides to aid the removal of the overseeded turf. The overall objectives of this study were to determine the impact of various Poa annua management practices on the overseeding of meadow fescue and tetraploid ryegrass and to determine best management practices for the removal of meadow fescue and tetraploid ryegrass from overseeded bermudagrass. Field trials were used to test a range of herbicide programs under these objectives. Many Poa annua control programs that have been commonly used on diploid perennial ryegrass behaved similarly on tetraploid perennial ryegrass and meadow fescue. Meadow fescue showed more sensitivity to chemical treatments that were relatively safe on other species, including ethofumesate, foramsulfuron, and fenarimol. Meadow fescue and diploid perennial ryegrasses were significantly injured by bispyribac-sodium, with meadow fescue having an almost 50% reduction in cover compared to the controls. Traditional herbicides such as pronamide, as well as numerous sulfonylurea herbicides were tested for phytotoxicity and efficacy at aiding removal of overseeded grasses. Diploid and tetraploid perennial ryegrass behaved similarly to most treatments. Meadow fescue had the lowest percent overseeded grass for most treatments and was more sensitive to the herbicides tested.
520 $a The findings of this study suggest that ethofumesate, foramsulfuron, fenarimol, and bispyribac-sodium have a negative impact on the turfgrass coverage of meadow fescue. This study also found that diploid perennial ryegrass and tetraploid perennial ryegrass can be managed similarly with regard to herbicide programs. Meadow fescue showed the most sensitivity to transition herbicides and opens the question of what rates would still be effective at removing this overseeding grass.
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