Dose and Concentration Responses of Common Nursery Weeds to Gallery, Surflan and Treflan

Judge, Caren A.; Neal, Joseph C.; Weber, J. B.

doi:10.24266/0738-2898-22.2.106

Cited by 9 publications

(4 citation statements)

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“…Further, some of the most prevalent weeds observed in Apopka also contributed to the herbicide having a greater impact. Spotted spurge, one of the most commonly observed species in Apopka during the summer months, is typically controlled by isoxaben or isoxaben-containing herbicides (Gallitano and Skroch, 1993;Judge et al, 2004). Further, trifluralin + isoxaben provides partial control or suppression of florida pusley when applied at rates used in this trial (Dow AgroSciences, 2010).…”

Section: Discussionmentioning

confidence: 99%

Efficacy and Estimated Annual Cost of Common Weed Control Methods in Landscape Planting Beds

Marble

Koeser

Hasing

et al. 2017

hortte

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Organic mulch is commonly used in landscape planting beds to improve plant growth and reduce competition from weed species. Although many different mulch materials have been evaluated in landscape, forestry, or agricultural settings, there have been no previous reports concerning the maintenance costs associated with different mulch materials from a weed control perspective. Trials were conducted at two locations in Florida to estimate the annual maintenance costs associated with pine bark nuggets (bark derived from pine species not specified) and pine straw mulch [mix of longleaf pine (Pinus palustris) and slash pine (Pinus taeda) needles] with and without the use of a granular preemergence herbicide when maintained at similar depths in schilling’s holly (Ilex vomitoria ‘Schilling’s Dwarf’) shrub beds and asiatic jasmine (Trachelospermum asiaticum ‘Minima’) groundcover beds. Weed coverage and residual mulch depth were tracked over time, with maximum and minimum thresholds (20% and 2 inches, respectively) set as triggers for maintenance activities. Results showed that the addition of herbicide (trifluralin + isoxaben) had little to no impact on weeding frequency or time when plots were mulched, but did reduce hand weeding frequency and time compared with nontreated, nonmulched plots. Both mulch materials used alone reduced hand weeding frequency and time compared with herbicide-only treatments. Although results varied by bed type and location, pine bark generally provided greater weed control compared with pine straw and required fewer mulch additions and less mulch by volume. Results from this study suggests that using pine bark nuggets as mulch may result in lower maintenance costs and weed pressure compared with pine straw when both are applied and maintained at 2-inch depths.

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Section: Discussionmentioning

confidence: 99%

Efficacy and Estimated Annual Cost of Common Weed Control Methods in Landscape Planting Beds

Marble

Koeser

Hasing

et al. 2017

hortte

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“…Although preemergence herbicides are a cost-effective method for controlling weeds during crop production, there are several limitations for using preemergence herbicides during propagation. Currently, there are no preemergence herbicides labeled for use on nonrooted cuttings (Cochran et al, 2008;Cook and Neal, 2001;Judge et al, 2004;Marble and Chandler, 2016). Also, there is limited research on determining the herbicide safety and its actions during propagation and root development (Thetford and Gilliam, 1991).…”

mentioning

confidence: 99%

Effect of Mulch Type and Depth on Rooting of Stem Cuttings and Weed Control in Containers

Poudel

Witcher

2022

hortte

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Weeds are a major problem in cutting propagation and compete with the main crop for water, sunlight, and nutrients, thus reducing growth and marketable quality of rooted cuttings. Due to the high labor cost of hand weeding, mulches can be an alternative method for weed control in the propagation environment. The objective of this research was to determine the effect of mulches (coarse vermiculite, rice hulls, paper pellets, and pine pellets) on rooting of stem cuttings and weed control when applied at 0.5- and 1-inch depths. Cuttings of three plant species [‘Nanho Blue’ butterfly bush (Buddleja davidii), ‘Catawba’ crape myrtle (Lagerstroemia indica), ‘Phantom’ hydrangea (Hydrangea paniculata)] were stuck in 2.5-inch-diameter containers filled with pine bark substrate and treated with mulch. In a separate study, seeds of four weed species [creeping woodsorrel (Oxalis corniculata), hairy bittercress (Cardamine hirsuta), large crabgrass (Digitaria sanguinalis), mulberry weed (Fatoua villosa)] were sown onto the mulch surface. Rooting percentage was unaffected by mulch type or depth for any of the three crop species (‘Nanho Blue’ butterfly bush, ‘Catawba’ crape myrtle, ‘Phantom’ hydrangea). Pine pellets did not affect root dry weight of any crop species, but root length and volume of ‘Catawba’ crape myrtle was reduced by pine pellets at 1-inch depth. Rice hulls slightly reduced the root length and volume of ‘Catawba’ crape myrtle, but the reduction was less than 50%. Pine pellets and paper pellets (both depths) reduced growth of all four weed species. Even though weed seeds germinated in pine and paper pellets, seedlings did not grow large enough to potentially affect crop rooting. In conclusion, pine pellets and paper pellets at 0.5-inch depth can be effective in suppressing weed populations with minimal effect on rooting.

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“…As a result, hand weeding is commonly used for controlling weeds in propagation, but it is time-consuming and labor-intensive. The labor cost for hand weeding in container nurseries can total USD 9000 per hectare and can be up to 30 times more expensive than herbicide use, while an estimated overall economic loss of over USD 17,000 per hectare can be associated with weed infestations in nursery crops from several hundred to several thousand dollars per acre [2][3][4]. Additionally, there has been a decrease in the availability of the agricultural labor supply [5].…”

Section: Introductionmentioning

confidence: 99%

Preemergence Herbicides and Mulches for Cutting Propagation—Impact on Rooting, Growth after Transplant, and Weed Control

Poudel,

Witcher

2024

Horticulturae

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Weed control in cutting propagation is limited to manual hand weeding, which is time-consuming and labor-intensive. Preemergence herbicides and mulches may be viable weed control methods for cutting propagation, but crop safety and weed control efficacy must be better understood. Four preemergence herbicides (indaziflam, isoxaben, isoxaben + dithiopyr, and oxyfluorfen + oxadiazon) and two mulches (pine pellets and rice hulls) were assessed in cutting propagation for their impact on rooting and subsequent liner growth (butterfly bush [Buddleja davidii Franch.] and crape myrtle [Lagerstroemia indica L.]) and control of four common weed species. Butterfly bush cuttings had lower rooting percentage and root dry weight with isoxaben and isoxaben + dithiopyr, but no damage was observed for all other treatments during propagation or after transplant. Crape myrtle cutting root development and liner growth were statistically similar for all treatments compared to the non-treated control. Isoxaben, isoxaben + dithiopyr, oxyfluorfen + oxadiazon, and pine pellets provided excellent control (87 to 100%) of all four weed species tested. Overall, several preemergence herbicides and mulches were safe for use in cutting propagation and effective weed control varied by product and weed species.

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Dose and Concentration Responses of Common Nursery Weeds to Gallery, Surflan and Treflan

Cited by 9 publications

References 0 publications

Efficacy and Estimated Annual Cost of Common Weed Control Methods in Landscape Planting Beds

Efficacy and Estimated Annual Cost of Common Weed Control Methods in Landscape Planting Beds

Effect of Mulch Type and Depth on Rooting of Stem Cuttings and Weed Control in Containers

Preemergence Herbicides and Mulches for Cutting Propagation—Impact on Rooting, Growth after Transplant, and Weed Control

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