Effects of Glyphosate and Siduron on Turfgrass Establishment

Moshier, L. J.; Turgeon, A. J.; Penner, Donald

doi:10.1017/s004317450006642x

Cited by 26 publications

(26 citation statements)

References 3 publications

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“…The production of abnormal seedlings from seed harvested in the 1981 trial suggested that the herbicide was still reaching the embryo even with glyphosate application at seed moisture concentrations of 400 g kg"' or below. The presence of glyphosate on the seed coat does not usually affect germination (Klingman and Murray, 1976;Moshier et al, 1976;Egley and Williams, 1978) because when glyphosate comes into contact with clay minerals or soil organic matter it is absorbed and inactivated (Sprankle et al, 1975a;b).…”

Section: Discussionmentioning

confidence: 99%

The preharvest use of glyphosate in the ryegrass seed crop

Hampton

Hebblethwaite

1982

Grass and Forage Science

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Preharvest application of 1 and 2 litres ha~' IPA glyphosate (glyphosate) to a seed crop of S24 perennial ryegrass with moisture concentrations of around 400 and 340 g kg"' (40 and 34% moisture content w/w) failed to significantly lower seed and straw moisture concentration at harvest and consequently did not affect combine rate. Addition of extra surfactants and ammonium sulphate to glyphosate did not significantly increase the rate of desiccation.The quality of harvested seed was impaired at both rates and application times. Germination was significantly lowered through the production of abnormal seedlings. The germination of seed harvested in the previous year from glyphosatetreated plots decreased with storage. Seed vigour, germination rate and field emergence were also significantly decreased as a result of glyphosate application. The effect of glyphosate on seed quality precludes its preharvest use as a desiccant in the ryegrass seed crop.Harvesting difficulties due to the production of secondary vegetative tillers may be overcome by swathing rather than direct combining.

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Section: Discussionmentioning

confidence: 99%

The preharvest use of glyphosate in the ryegrass seed crop

Hampton

Hebblethwaite

1982

Grass and Forage Science

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“…Siduron can be used before and during establishment of cool-season turfgrass (Youngner et al 1974). Siduron applied PRE controls some summer annual grasses without harming cool-season turfgrass (Christians 1998;Moshier et al 1976). Siduron does not control goosegrass [Eleusine indica (L.) Faertn.]…”

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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“…If left untreated, spring seedings can fail due to competition from undesirable species. Siduron has been the industry standard, due to its safety (low level of herbicide injury) to seedlings of cool‐season grasses and adequate control of warm‐season summer annual grassy weeds (16,20,23). However, siduron only has short‐term residual control and requires repeat applications for season‐long control (21).…”

mentioning

confidence: 99%

Weed Control and Turf Safety of Single and Sequential Applications of Herbicides Over Spring Seedings

Sousek

Gaussoin

Patton

et al. 2014

Applied Turfgrass Science

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Weed control is important during establishment of cool‐season grasses, especially when seeded in spring near summer annual weed germination. Our objectives were to determine (i) turf safety and weed control from sequential applications of newly‐released herbicides on tall fescue at three seeding dates (May, June, July) and (ii) turf safety and weed control from newly‐released herbicides applied at seeding or shortly after emergence of spring‐seeded Kentucky bluegrass or tall fescue. No herbicides tested negatively affected turfgrass establishment and usually improved turf establishment by reducing weed competition. Mesotrione consistently provided effective weed control and turf cover from either single or sequential applications over different locations, years, seeding dates, and turf species. Quinclorac or siduron applied as single or sequential applications or quinclorac+carfentrazone as a single application provided effective weed control and turf cover depending on seeding date and application regime. Although spring seeding can be achieved with high maintenance, it is strongly recommended to seed cool season grasses at the optimal time from late summer to early fall.

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Effects of Glyphosate and Siduron on Turfgrass Establishment

Cited by 26 publications

References 3 publications

The preharvest use of glyphosate in the ryegrass seed crop

The preharvest use of glyphosate in the ryegrass seed crop

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

Weed Control and Turf Safety of Single and Sequential Applications of Herbicides Over Spring Seedings

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