Influence of Preemergence and Postemergence Herbicides on Rooting of Turfgrasses

Landschoot, Peter J.; Watschke, T. L.; Hoyland, Bryce F.

doi:10.1017/s0890037x00036988

Cited by 12 publications

(9 citation statements)

References 10 publications

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“…Most commercial PRE herbicides can not be used immediately before or after seeding turfgrass (Dunn and Diesburg 2004). PRE herbicides commonly used in established coolseason turfgrasses, such as dithiopyr, oryzalin, oxadiazon, pendimethalin, and prodiamine, have been known to injure immature and newly seeded cool-season turfgrass, in many cases causing total failure of turfgrass establishment (Fermanian and Haley 1994;Johnson and Murphy 1991;Landschoot et al 1993). Prepackage products for POST weed control that include mixtures of 2,4-D, dicamba, MCPP, MSMA, or triclopyr are recommended for use after seedlings are tillering, or after three to four mowing events (Askew and Hipkins 2005).…”

Section: Introductionmentioning

confidence: 99%

Weed Control Options in Spring-seeded Tall Fescue (Festuca Arundinacea)

et al. 2006

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Turf managers traditionally avoid seeding cool-season turfgrass in spring due to summer annual weed interference and poor growing conditions for cool-season grasses. Siduron is the most accepted herbicide for weed control in spring-seeded tall fescue, but it has low residual activity and does not control many weeds other than crabgrass. Isoxaflutole, mesotrione, and quinclorac were evaluated as alternatives to siduron. Single applications of these herbicides controlled crabgrass equivalent to or better than siduron. Sequential applications of isoxaflutole, mesotrione, or quinclorac effectively controlled smooth crabgrass without injuring tall fescue. Isoxaflutole and mesotrione controlled broadleaf plantain, henbit, and yellow woodsorrel; quinclorac marginally controlled henbit; and siduron did not control broadleaf weeds. Turfgrass cover 9 wk after seeding was dependent on environment and equivalent between treatments except at a location with predominately broadleaf weeds where siduron treatments resulted in less cover due to weed infestation. Sequential applications of isoxaflutole, mesotrione, and quinclorac provide an effective, safe option for chemical weed control during establishment of cool-season turfgrass.

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Section: Introductionmentioning

confidence: 99%

Weed Control Options in Spring-seeded Tall Fescue (Festuca Arundinacea)

et al. 2006

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“…Dithiopyr, pendimethalin, and prodiamine are mitosis‐inhibiting herbicides that are frequently used for PRE control of smooth crabgrass. These herbicides have the potential to exacerbate root‐growth inhibition of turfgrass from winterkill or disease in spring (Fishel and Coats, 1993; Landschoot et al, 1993; Senseman, 2007). When applied to dormant bermudagrass, flumioxazin may effectively control smooth crabgrass with better safety on lateral rooting during spring greenup than dinitroaniline or pyridine herbicides, similar to oxadiazon.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Adjuvants on Flumioxazin Efficacy for Postemergence Annual Bluegrass and Residual Smooth Crabgrass Control

Reed

McCullough

Grey

2014

Applied Turfgrass Science

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Flumioxazin is a protoporphyrinogen oxidase (Protox) inhibitor with potential for postemergence (POST) control of annual bluegrass (Poa annua L.) and preemergence (PRE) control of smooth crabgrass [Digitaria ischaeum (Schreb.) Schreb. ex Muhl.] in bermudagrass [Cynodon dactylon (L.) Pers.]. However, flumioxazin efficacy is reduced under low temperatures, and control is often inconsistent on mature annual bluegrass. The objective of this research was to evaluate the use of adjuvants on flumioxazin efficacy for POST control of annual bluegrass and residual smooth crabgrass in bermudagrass. Tank‐mixing methylated seed oil, nonionic surfactant, or ammonium sulfate did not improve POST annual bluegrass control from flumioxazin at 0.42 kg active ingredient (a.i.) ha−1 alone. Granular urea antagonized flumioxazin efficacy and increased the time to achieve 50% annual bluegrass control (C50) by more than 4 weeks. Flumioxazin alone controlled annual bluegrass >80% at 9 weeks after treatment in both years. All treatments provided excellent (90 to 100%) control of smooth crabgrass at 4 months after treatment (MAT) and ≥89% control at 5 MAT. All flumioxazin treatments provided >70% control of smooth crabgrass and reduced grid count cover >65% from the untreated at 7 MAT. Although adjuvants did not enhance speed of annual bluegrass control from late‐winter applications, flumioxazin alone controlled annual bluegrass >80%, and provided >80% PRE control of smooth crabgrass.

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“…Herbicide options are limited for turfgrass managers who are looking to control problematic weeds during establishment of coolseason grasses. Herbicides commonly used in established cool-season turfgrasses for PRE weed control such as dithiopyr, oryzalin, oxadiazon, pendimethalin, and prodiamine can injure immature and newly seeded coolseason turfgrass potentially leading to total failure of turfgrass establishment (Fermanian and Haley, 1994;Johnson and Murphy, 1991;Landschoot et al, 1993). Herbicides commonly used for post-weed control including 2,4-D, dicamba, MCPP, MSMA, or triclopyr…”

Section: Discussionmentioning

confidence: 99%

Perennial Ryegrass and Tall Fescue Reseeding Intervals after Aminocyclopyrachlor Application

Workman¹,

McCullough²,

Waltz³

et al. 2012

horts

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Turfgrass managers applying aminocyclopyrachlor for annual and perennial broadleaf weed control in cool-season turfgrasses may want to reseed into treated areas. Field experiments were conducted in Georgia), Tennessee, and Texas to investigate perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb.) reseeding intervals after aminocyclopyrachlor applications. Perennial ryegrass and tall fescue establishment were similar to the non-treated control after treatments of aminocyclopyrachlor and 2,4-dichlorophenoxyacetic acid (2,4-D) + dicamba + methylchlorophenoxypropionic acid (MCPP) at 0, 2, 4, or 6 weeks before seeding. Results demonstrate that no reseeding interval is required after aminocyclopyrachlor treatment. Perennial ryegrass and tall fescue can be safely seeded immediately after aminocyclopyrachlor treatment at 39, 79, and 158 g/a.i./ha.

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Influence of Preemergence and Postemergence Herbicides on Rooting of Turfgrasses

Cited by 12 publications

References 10 publications

Weed Control Options in Spring-seeded Tall Fescue (Festuca Arundinacea)

Weed Control Options in Spring-seeded Tall Fescue (Festuca Arundinacea)

Evaluation of Adjuvants on Flumioxazin Efficacy for Postemergence Annual Bluegrass and Residual Smooth Crabgrass Control

Perennial Ryegrass and Tall Fescue Reseeding Intervals after Aminocyclopyrachlor Application

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