Control of Yellow and Purple Nutsedges (<i>Cyperus esculentus</i>and<i>C. rotundus</i>) in Nursery Crops

Derr, Jeffrey F.; Wilcut, John W.

doi:10.1017/s0890037x00036964

Cited by 10 publications

(13 citation statements)

References 8 publications

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“…Similarly, mesotrione applied at 0.18 lb/acre to 0.36 lb/acre controlled yellow nutsedge 72% to 87%. This response has been reported by other researchers following bentazon or mesotrione applications for yellow nutsedge control (Armel et al, 2008;Derr and Wilcut, 1993;Fretz and Sheppard, 1979;Pereira et al, 1987;Stoller et al, 1979).…”

Section: Methodssupporting

confidence: 82%

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Cutulle

Armel

Brosnan

et al. 2013

hortte

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Selective weed control in ornamental plant production can be difficult as many herbicides can cause unacceptable injury. Research was conducted to evaluate the tolerance of several ornamental species to applications of p-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides for the control of problematic weeds in ornamental production. Mestotrione (0.09, 0.18, and 0.36 lb/acre), tembotrione (0.08, 0.16, and 0.32 lb/acre), and topramezone (0.016, 0.032, and 0.064 lb/acre) were applied alone postemergence (POST) in comparison with the photosystem II-inhibiting herbicide, bentazon (0.5 lb/acre). All herbicide treatments, with the exception of the two highest rates of tembotrione, caused less than 8% injury to ‘Noble Upright’ japanese holly (Ilex crenata) and ‘Compactus’ burning bush (Euonymus alatus). Similarly, no herbicide treatment caused greater than 12% injury to ‘Girard’s Rose’ azalea (Azalea). Conversely, all herbicides injured flowering dogwood (Cornus florida) 10% to 23%. Mesotrione- and tembotrione-injured ‘Radrazz’ rose (Rosa) 18% to 55%, compared with only 5% to 18% with topramezone. ‘Siloam June Bug’ daylily (Hemerocallis) injury with topramezone and tembotrione was less than 10%. Topramezone was the only herbicide evaluated that provided at least 93% control of redroot pigweed (Amaranthus retroflexus) with all application rates by 4 weeks after treatment (WAT). Redroot pigweed was controlled 67% to 100% with mesotrione and tembotrione by 4 WAT, but this activity was variable among application rates. Spotted spurge (Chamaesyce maculata) was only adequately controlled by mesotrione applications at 0.18 and 0.36 lb/acre, whereas chamberbitter (Phyllanthus urinaria) was not controlled sufficiently with any herbicide evaluated in these studies. Yellow nutsedge (Cyperus esculentus) was suppressed 72% to 87% with mesotrione applications at 0.18 lb/acre or higher and with bentazon at 0.5 lb/acre by 4 WAT. All other herbicide treatments provided less than 58% control of yellow nutsedge. In the second study, ‘Patriot’ hosta (Hosta), ‘Green Sheen’ pachysandra (Pachysandra terminalis), autumn fern (Dryopteris erythrosora), ‘Little Princess’ spirea (Spiraea japonica), ‘Green Giant’ arborvitae (Thuja plicata), and ‘Rosea’ weigela (Weigela florida) displayed no response to topramezone when applied at 0.024 and 0.095 lb/acre. Since 10 ornamental species in our studies exhibited less than 10% herbicidal response with all rates of at least one HPPD-inhibiting herbicide then it is possible that these herbicides may provide selective POST weed control in ornamental production systems.

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Section: Methodssupporting

confidence: 82%

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Cutulle

Armel

Brosnan

et al. 2013

hortte

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“…The glyphosate application rate and the plant age at the time of application influence yellow nutsedge control and viable tuber production (Appleby and Paller 1978;Keeley et al 1985;Pereira and Crabtree 1986;Stoller et al 1975). Regrowth of yellow nutsedge after an application of glyphosate at 1.1 to 2.2 kg/ha (Pereira and Crabtree 1986) and, conversely, control with glyphosate at 1.1 kg/ha or more (Derr and Wilcut 1993;Stoller et al 1975) have been reported.…”

Section: Introductionmentioning

confidence: 99%

Yellow Nutsedge (Cyperus esculentus) Control and Tuber Yield with Glyphosate and Glufosinate¹

Nelson¹,

Renner²,

Penner³

2002

Weed Technology

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Greenhouse and field research was conducted to determine the effect of glufosinate, glyphosate, and glyphosate plus additional adjuvant on yellow nutsedge control and tuber production. Glyphosate at 0.84 kg/ha reduced yellow nutsedge dry weight 64%, whereas glufosinate at 0.4 kg/ha reduced dry weight only 22% when averaged over diammonium sulfate (DAS) and spray volume. Furthermore, yellow nutsedge dry weight was reduced 53% in the presence and 34% in the absence of DAS; however, dry weights were similar when spray volumes of glufosinate or glyphosate ranged from 140 to 1038 L/ha. Yellow nutsedge control with glyphosate and glufosinate increased to 88 and 68%, respectively, when the herbicides were injected into the plant. In the field, glufosinate at 0.4 kg/ha and glyphosate at 0.84 kg/ha controlled yellow nutsedge 19 and 53%, respectively. Glyphosate reduced yellow nutsedge tuber density 51%, tuber fresh weight 59%, and tuber sprouting 17% 42 wk after treatment in the field. The addition of nonionic surfactant, methylated seed oil, or crop oil concentrate to glyphosate plus DAS did not increase yellow nutsedge control with glyphosate in the greenhouse or field.

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“…Cyperus species are troublesome for soybean and cotton growers in the southeastern United States because of their tolerance to many herbicides (Dowler 1998). Of the two Cyperus species that predominate in cotton and soybean, purple nutsedge is more competitive than yellow nutsedge (Cyperus esculentus L.), and there are fewer herbicides available for purple nutsedge control (Bendixen and Nandihalli 1987;Derr and Wilcut 1993;Grichar and Nester 1997;Wehtje et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Purple Nutsedge (Cyperus rotundus) Control with Glyphosate in Soybean and Cotton¹

Edenfield¹,

Brecke²,

Colvin³

et al. 2005

Weed Technology

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Studies were conducted at the University of Florida, West Florida Research and Education Center to determine the effect of glyphosate on purple nutsedge control and nutsedge tuber production when glyphosate was applied to the same plots over 3 y in glyphosate-resistant soybean and cotton. Greater than 90% control of purple nutsedge foliage was achieved with a single POST application of glyphosate at 0.9 kg ai/ha in soybean or a sequential glyphosate application of 1.1 kg/ha POST followed by 0.6 kg/ha POST-directed in cotton. By the end of the third year of the study, these same treatments reduced purple nutsedge tuber density to less than 0.2% of the nontreated. In cotton, cultivation alone reduced tuber numbers by greater than 90%. Viability of tubers was also reduced by 80% in soybean and by 65% in cotton in the glyphosate-treated plots. Comparison treatments of imazaquin PRE followed by imazaquin POST in soybean or norflurazon PRE followed by cyanazine plus MSMA POST-directed in cotton also reduced purple nutsedge tuber density by ≥85% after three consecutive years of treatment.

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Control of Yellow and Purple Nutsedges (Cyperus esculentusandC. rotundus) in Nursery Crops

Cited by 10 publications

References 8 publications

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Yellow Nutsedge (Cyperus esculentus) Control and Tuber Yield with Glyphosate and Glufosinate¹

Purple Nutsedge (Cyperus rotundus) Control with Glyphosate in Soybean and Cotton¹

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Control of Yellow and Purple Nutsedges (Cyperus esculentusandC. rotundus) in Nursery Crops

Cited by 10 publications

References 8 publications

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Evaluation of Container Ornamental Species Tolerance to Three p-hydroxyphenylpyruvate Dioxygenase-inhibiting Herbicides

Yellow Nutsedge (Cyperus esculentus) Control and Tuber Yield with Glyphosate and Glufosinate1

Purple Nutsedge (Cyperus rotundus) Control with Glyphosate in Soybean and Cotton1

Contact Info

Product

Resources

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Yellow Nutsedge (Cyperus esculentus) Control and Tuber Yield with Glyphosate and Glufosinate¹

Purple Nutsedge (Cyperus rotundus) Control with Glyphosate in Soybean and Cotton¹