Wild Oat Control in Kentucky Bluegrass and Perennial Ryegrass

Weed Science ◽  
1975 ◽  
Vol 23 (6) ◽  
pp. 525-528 ◽  
Author(s):  
W. O. Lee
Keyword(s):  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Poa Pratensis ◽  
Kentucky Bluegrass ◽  
Avena Fatua ◽  
Perennial Grasses ◽  
Wild Oat ◽  
Boot Stage ◽  
Untreated Check ◽  
Seed Yields

MSMA (Monosodium methanearsonate) applied postemergence at 4.5, 6.7, or 9.0 kg/ha controlled wild oat (Avena fatuaL.) in new plantings of Kentucky bluegrass (Poa pratensisL. ‘Pennstar’) and in perennial ryegrass (Lolium perenneL. ‘Reveille,’ ‘Pennfine’). MSMA at 4.5 kg/ha was almost as effective as the higher rates in controlling wild oat. MSMA at 2.2 kg/ha was less effective in some experiments. Visual injury to the perennial grasses was negligible. Satisfactory grass stands developed at all MSMA rates. Perennial ryegrass seed yields were higher than the untreated check in most experiments when MSMA was applied at 4.5, 6.7, or 9.0 kg/ha before the grass reached the boot stage. When MSMA was applied after the ryegrass reached the boot stage, some of the treatments reduced ‘Reveille’ perennial ryegrass seed production.

scholarly journals Optimizing Pre-germination Techniques for Kentucky Bluegrass and Perennial Ryegrass1

2019 ◽  
Vol 37 (1) ◽  
pp. 19-23
Author(s):  
Julie H. Campbell ◽  
Jason J. Henderson ◽  
John C. Inguagiato ◽  
Victoria H. Wallace ◽  
Anthony Minniti
Keyword(s):  
Water Temperature ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Untreated Control ◽  
Poa Pratensis ◽  
Kentucky Bluegrass ◽  
Germination Percentage ◽  
Lolium Perenne L ◽  
Seed Soaking ◽  
Significant Difference

Abstract Many intensively trafficked areas such as athletic fields and golf courses require constant overseeding to maintain suitable turfgrass cover. Rapid seed germination and development are critical to managing these high wear areas. The objectives of this research were to determine the effect of water aeration, seed soaking duration, and water temperature on mean germination time (MGT) and final germination percentage (FGP) of Kentucky bluegrass (Poa pratensis L., KBG) and perennial ryegrass (Lolium perenne L., PRG). Two separate controlled environment studies were conducted. PRG soaked in aerated water from 8 to 48 h had a 20% decrease in MGT compared to an untreated control, while treated KBG decreased MGT by only 10% compared to an untreated control. Soaking duration and water temperature had significant effects on KBG. KBG MGT was optimized at 20 C (68 F) water temperature with a soaking duration of 24 h. MGT of PRG was optimized when soaked for 8 h while water was aerated. There was no significant difference in FGP for any of the treatments tested. Index words: turfgrass, aeration, seed soaking. Species used in this study: Kentucky bluegrass (Poa pratensis L.); perennial ryegrass (Lolium perenne L.).

Susceptibility of Several Grasses to Glyphosate

Weed Science ◽  
1980 ◽  
Vol 28 (5) ◽  
pp. 579-585 ◽  
Author(s):  
S. W. Bingham ◽  
J. Segura ◽  
C. L. Foy
Keyword(s):  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Poa Pratensis ◽  
Dactylis Glomerata ◽  
Kentucky Bluegrass ◽  
Festuca Rubra ◽  
Red Fescue ◽  
Agrostis Tenuis ◽  
Moderately Resistant

The susceptibility of 2- and 4-month-old perennial ryegrass (Lolium perenneL.), orchardgrass (Dactylis glomerataL.), Kentucky bluegrass (Poa pratensisL.), red fescue (Festuca rubraL.) and highland bentgrass (Agrostis tenuisSibth.) to glyphosate [N-(phosphonomethyl)glycine] was studied in the greenhouse. All 2-month-old grasses were killed by 0.28 kg/ha and higher rates of glyphosate. At 0.14 kg/ha, red fescue was moderately resistant, and bluegrass, orchardgrass, and perennial ryegrass were moderately susceptible. Bent-grass was very susceptible. When 4-month-old grasses were treated, bluegrass was as tolerant to 0.28 kg/ha of glyphosate as was red fescue. At this same rate, orchardgrass and perennial ryegrass were moderately susceptible, whereas bentgrass remained the most susceptible. Dosages lower than 0.28 kg/ha had little effect; whereas higher doages injured all five species.14C-glyphosate was absorbed and translocated via both apoplast and symplast in 1-month-old red fescue, orchardgrass and perennial ryegrass seedlings. Comparatively, less radioactivity was transported to the untreated areas in red fescue than in orchardgrass and perennial ryegrass. Thus, the differential tolerances of these species to low rates of glyphosate may be explained, in part, by differential translocation of glyphosate.

Control of Volunteer Wheat (Triticum aestivum) in Fall-Planted Perennial Ryegrass (Lolium perennne) with Ethofumesate

Weed Science ◽  
1980 ◽  
Vol 28 (3) ◽  
pp. 292-294 ◽  
Author(s):  
W. O. Lee
Keyword(s):  
Triticum Aestivum ◽  
Seed Production ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Field Experiments ◽  
Poa Pratensis ◽  
Lolium Multiflorum ◽  
Kentucky Bluegrass ◽  
Italian Ryegrass ◽  
The One

Ethofumesate [(±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate] was evaluated in field experiments at rates from 0.6 to 4.5 kg/ha for control of volunteer wheat (Triticum aestivumL. ‘Hyslop’, ‘Stephens’) in fall-planted perennial ryegrass (Lolium perenneL. ‘Cropper’, ‘Pelo’, ‘Pennfine’, ‘Omega’). Ethofumesate applied at 1.7 kg/ha or more in mid-November to wheat in the one-to three-leaf stage eliminated the wheat. Wheat was not eliminated when ethofumesate was applied preemergence soon after planting or when applied at the end of November to wheat in the four-leaf to four-tiller stage. In four experiments in which wheat was present, ethofumesate significantly increased perennial ryegrass seed production. In one experiment in which wheat was not present, ethofumesate did not affect perennial ryegrass seed production. Ethofumesate applied in the fall at rates to 4.5 kg/ha to newly-seeded perennial ryegrass or to well-established bentgrass (Agrostis tenuisSibth. ‘Highland’), Kentucky bluegrass (Poa pratensisL. ‘Newport’), and Italian ryegrass (Lolium multiflorumLam.) did not adversely affect germination of the following seed crop.

Performance of birdsfoot trefoil, white clover, and other legume-grass mixtures under irrigation in the Intermountain West USA

2006 ◽  
pp. 355-359 ◽  
Author(s):  
J.W. Macadam ◽  
T.C. Griggs
Keyword(s):  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Tall Fescue ◽  
Poa Pratensis ◽  
Dactylis Glomerata ◽  
Kentucky Bluegrass ◽  
Birdsfoot Trefoil ◽  
Intermountain West ◽  
Bromus Riparius

Two trials were designed to provide baseline data on the productivity and quality of irrigated pastures in the Intermountain West USA. An initial clipping trial (1997- 1999) screened a number of temperate grass-legume mixtures well-adapted to the soils and climate of the Intermountain West, and a successive grazing trial (2001- 2003) evaluated a subset of these mixtures under rotational grazing. The most productive and best utilised grass in mixtures was meadow brome (Bromus riparius), followed by tall fescue (Lolium arundinaceum) and cocksfoot (Dactylis glomerata). Perennial ryegrass (Lolium perenne) and Kentucky bluegrass (Poa pratensis) mixtures tended to become legume-dominated (up to 44% under grazing), and were therefore high in quality but a potential bloat threat. The bloat-safe legume birdsfoot trefoil (Lotus corniculatus) proved to be productive, well-utilised, and as persistent as other legumes in mixtures under grazing. Keywords: grass, grazing, Intermountain West USA, legume, mixtures, pasture

Influence of Paraquat on Seed Germination

Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 484-485 ◽  
Author(s):  
Arnold P. Appleby ◽  
Ronald G. Brenchley
Keyword(s):  
Seed Germination ◽  
Medicago Sativa ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Trifolium Pratense ◽  
Poa Pratensis ◽  
Red Clover ◽  
Soil Surface ◽  
Kentucky Bluegrass ◽  
Grass Species

Three experiments were conducted in the greenhouse to study the effect of 1,1′-dimethyl-4,4′-bipyridinium salt (paraquat) when sprayed directly on seeds at the soil surface. Germination of alfalfa (Medicago sativa L., var. DuPuit) and red clover (Trifolium pratense L., var. Kenland) was not affected at 1 1b/A paraquat, but germination of Kentucky bluegrass (Poa pratensis L., var. Newport) and perennial ryegrass (Lolium perenne L., var. Linn) was severely reduced at that rate. A protecting layer of soil approximately 0.25 inch thick was completely effective in protecting the seeds from the effect of paraquat. Germination of seven other grass species was reduced by 0.5 1b/A paraquat.

scholarly journals Additional Host Plants of Four Species of Billbug Found on New Jersey Turfgrasses

1990 ◽  
Vol 115 (4) ◽  
pp. 608-611 ◽  
Author(s):  
Jennifer M. Johnson-Cicalese ◽  
C.R. Funk
Keyword(s):  
New Jersey ◽  
Perennial Ryegrass ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Host Plants ◽  
Cynodon Dactylon ◽  
Poa Pratensis ◽  
Kentucky Bluegrass ◽  
Grass Species ◽  
Red Fescue

Studies were conducted on the host plants of four billbug species (Coleoptera:Curculionidae: Sphenophorus parvulus Gyllenhal, S. venatus Chitt., S. inaequalis Say, and S. minimus Hart) found on New Jersey turfgrasses. A collection of 4803 adults from pure stands of various turfgrasses revealed all four billbugs on Kentucky bluegrass (Poa pratensis L.), tall fescue (Festuca arundinacea Schreb.), and perennial ryegrass (Lolium perenne L.), and S. parvulus, S. venatus, and S. minimus on Chewings fescue (F. rubra L. ssp. commutata Gaud.). Since the presence of larvae, pupae, or teneral adults more accurately indicates the host status of a grass species, immature billbugs were collected from plugs of the various grass species and reared to adults for identification. All four species were reared from immature billbugs found in Kentucky bluegrass turf; immatures of S. venatus, S. inaequalis, and S. minimus were found in tall fescue; S. venatus and S. minimus in perennial ryegrass; and S. inaequalis in strong creeping red fescue (F. rubra L. ssp. rubra). A laboratory experiment was also conducted in which billbug adults were confined in petri dishes with either Kentucky bluegrass, perennial ryegrass, tall fescue, or bermudagrass (Cynodon dactylon Pers.). Only minor differences were found between the four grasses in billbug survival, number of eggs laid, and amount of feeding. In general, bermudagrass was the least favored host and the other grasses were equally adequate hosts. The results of this study indicate a need for updating host-plant lists of these four billbug species.

Herbicide Mixtures Containing BAS 9052 for Weed Control in Flax (Linum usitatissimum)

Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 20-22 ◽  
Author(s):  
Paul N.P. Chow
Keyword(s):  
Triticum Aestivum ◽  
Linum Usitatissimum ◽  
Trichloroacetic Acid ◽  
Antagonistic Effect ◽  
Avena Fatua ◽  
Wild Oat ◽  
Flax Seed ◽  
Herbicide Mixtures ◽  
Excellent Control ◽  
Seed Yields

There was no antagonism between dalapon (2,2-dichloropropionic acid) or TCA (trichloroacetic acid) and BAS 9052 {2 - [1 -(ethoxyimino)butyl] - 5 - [2 -(ethylthio) -propyl] -3-hydroxy-2-cyclohexen-1-one} at 0.3 kg/ha for control of volunteer barley (Hordeum vulgareL. ‘Bonanza’) and wheat (Triticum aestivumL. ‘Neepawa’) in flax (Linum usitatissimumL. ‘Dufferin’). However, MCPA {[(4-chloro-o- tolyl)oxy] acetic acid} amine at 0.2 to 0.6 kg/ha had an antagonistic effect on BAS 9052, especially at 0.1 kg/ha, for control of wild oat (Avena fatuaL.). BAS 9052 at 0.3 kg/ha overcame this antagonistic effect of MCPA. Field results confirmed that wild oat control with BAS 9052 at 0.3 kg/ha was not reduced by the mixtures with each of four broadleaf weed herbicides at 0.6 kg/ha. The mixtures gave excellent control of grass and broadleaf weeds. Flax seed yields were five times that of the unsprayed check and were equal to the yield of the handweeded treatment.

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