Weed Control Using an Enclosed Thermal Heating Apparatus

Hoyle, Jared A.; McElroy, J. Scott; Rose, Jack J.

doi:10.1614/wt-d-12-00057.1

Cited by 13 publications

(9 citation statements)

References 42 publications

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“…where C is the control, N is the total number of weeds per plot in the control treatment, and T is the total number of weeds per plot in the treated plot (Hoyle et al, 2012). Percentage control was reported on a scale of 0 to 100, where 0 represents no weed control, and 100 represents complete weed control.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Mulch and Preemergence Herbicide Combinations for Weed Control in High-density Olive (Olea europaea L.) Production

Henry¹,

Hoyle²,

Beck³

et al. 2015

horts

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Field experiments were conducted at the Central Texas Olive Ranch in Walburg, TX, in 2011 and 2012 to evaluate the efficacy of mulch and/or preemergence herbicides for weed control in high-density olive (Olea europaea L.) production during orchard establishment. Treatments were initiated on 1 Apr. 2011 and 28 Mar. 2012 and consisted of a nontreated control, isoxaben (2.2 kg a.i./ha), oryzalin (4.5 kg a.i./ha), oxadiazon (3.36 kg a.i./ha), and mesotrione (0.14 kg a.i./ha). Hardwood mulch was applied to half of each plot following herbicide application. Weed counts, combined across species (camphorweed, texas croton, lanceleaf sage, pinnate tansymustard, tumble pigweed, common purslane, and prostrate spurge), were conducted to assess % weed cover at 4 and 12 weeks after treatment (WAT). In 2011, compared with the nonmulched no herbicide treatment, adding mulch reduced weed counts by 23 and increased weed control by 70% 4 WAT. All preemergence herbicide treatments, regardless of mulching regime, resulted in ≥97% weed control 4 WAT with the exception of oryzalin without mulch (91% weed control, 3 weeds/plot). In 2012, compared with the nonmulched no herbicide treatment, adding mulch reduced weed counts by 35 and increased weed control by 64% 4 WAT. Mulching in combination with mesotrione resulted in 100% weed control, significantly greater than mesotrione applied without mulch (98%, 2 weeds/plot) 4 WAT. Oryzalin without mulch resulted in greater weed control (94%, 4 weeds/plot) in 2012 4 WAT; however, this treatment provided the least amount of weed control of all preemergence herbicides tested. By 12 WAT, weed counts were reduced by 21 and 22 in 2011 and 2012, respectively, in response to mulching in the nontreated plots resulting in a 52% and 42% increase in weed control in 2011 and 2012, respectively. Mesotrione was the only treatment affected by mulching regime 12 WAT in 2011 and 2012. Mesotrione in combination with mulch resulted in 100% weed control in 2011 and 2012, while mesotrione without mulch resulted in 93% weed control (3 and 4 weeds/plot) 12 WAT in 2011 and 2012, respectively. Although not statistically significant, isoxaben applied alone in 2011 resulted in 97% weed control (1 weed/plot), while isoxaben in combination with mulch resulted in 94% weed control (3 weeds/plot) 12 WAT. In 2011, oryzalin and oxadiazon resulted in 87% to 92% control, regardless of mulching regime 12 WAT. Weed control in response to isoxaben in 2012 was 95% 12 WAT, regardless of mulching regime. The combination of oxadiazon + mulch resulted in similar weed control (95%, 3 weeds/plot) 12 WAT; however, oxadiazon alone and oryzalin with and without mulch resulted in 87% to 89% weed control. All preemergence herbicides evaluated provided good to excellent weed control. Isoxaben and oryzalin are labeled for use on nonbearing fruit trees or during orchard establishment, while oxadiazon is only labeled for woody ornamentals. Although not labeled for use in orchards, mesotrione may be an alternative for use in olive production. The addition of mulching did not increase weed control except when used in conjunction with mesotrione. Mulch alone provided moderate weed control when preemergence herbicides were not applied. Furthermore, the utilization of mulch in combination with preemergence herbicides may help reduce photodegradation and/or volatilization when irrigation/rainfall is limited.

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Section: Methodsmentioning

confidence: 99%

Evaluation of Mulch and Preemergence Herbicide Combinations for Weed Control in High-density Olive (Olea europaea L.) Production

Henry¹,

Hoyle²,

Beck³

et al. 2015

horts

Self Cite

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“…(Dahlquist et al, 2007). Weed control across thermal treatments were equal to or greater than the comparison chemical treatment (Dazomet at 389 kg ha −1 ) while Broadleaf and grassy weeds were better controlled compared with sedge weeds (Hoyle et al, 2012). Weeds effect by flame treatment depending on weeds species, stage of development of weeds and burner parameters.…”

Section: Introductionmentioning

confidence: 94%

Using Flame for Weed control in Some Crops

Dress

Balah

2016

Journal of Soil Sciences and Agricultural Engineering

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The performance of locally flaming weeder machine pulled with tractor through three levels of gas pressure (1, 1.5 and 2 bar), flame height above the ground (15, 20 and 25 cm) and four travel speeds (0.6, 0.9, 1.2 and 1.5 km/h) in the machine actual field capacity and field efficiency under both a single or double rows of burners were evaluated. The machine consist of the main frame and the flaming system which consisted of four burners were installed in one or two rows with suitable inclination and opening air outlet and propane gas as well as three heights from the ground surface. The evaluation of the flaming machine showed acceptable results which is suitable for use with an organic olive and apple agriculture to obtained very powerful tool for weed control and lowest recovery rates. Thereby, the most successful parameters were double burner rows, travel speeds 0.6 km/h and highest gas pressure 2 bar as well as lowest flaming height (15cm) while, the gas consumption calculated by 40kg/fed. The obtained result revealed that the control activity of flaming in some narrow and broad leaved weeds was exhibited highly positive responses than perennial weeds. The weed control efficiency increased with lower travel speed and higher gas pressure as well as burner height. Further studies will be recommended for design a suitable burner and sensors to give regularity fire between the crops seedling and to avoiding the harmful effect on the economic plants.

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“…Thermal weed control can be used to sterilize a seedbank or spot spray or burn existing weeds. Hoyle, McElroy, and Rose (2012) documented good broadleaf and grassy weed but less yellow nutsedge ( Cyperus esculentus L.) control before tall fescue establishment when using an enclosed flaming system. The authors reported that 6 wk after seeding, tall fescue reached >60% establishment when flaming was applied in fall vs. summer.…”

Section: Thermal Weed Controlmentioning

confidence: 99%

Managing cool‐season turfgrass without herbicides: Optimizing maintenance practices to control weeds

Hahn¹,

Sallenave

Pornaro

et al. 2020

Crop Science

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Bans on the use of synthetic herbicides require innovative management approaches to maintain the attractiveness and usability of turfgrass swards. Such measures should include the use of locally adapted cultivars that germinate and establish quickly, resulting in the densest possible stands. Additionally, a number of turfgrasses have been reported to produce allelopathic substances that inhibit common turfgrass weeds. Mowing heights should be set to achieve maximum weed suppression while still providing acceptable quality for desired use. Sustainable turfgrass management programs have led to a reduction in fertilizer inputs; however, without the availability of herbicides, fertilization regimes need to be re‐examined. The literature suggests that broadleaf weeds are reduced but never fully controlled when more N is applied; therefore, finding a balance between what is needed and what is environmentally safe and sustainable is critical. Organic herbicides include plant pathogens from the fungus Phoma and strains of the bacterium Pseudomonas fluorescens. Both can be used to control several weeds common to turfgrasses. Acetic acid has also been shown to have herbicidal activity; however, it has limited residual activity, and its efficacy remains questionable on mature weeds. Thermal weed control can be used to sterilize a seedbank or spot treat existing weeds. Future turfgrass breeding programs could focus on understanding and enhancing the allelopathic potential of turfgrasses to outcompete weeds more effectively. Furthermore, more research should be directed at assessing the competitiveness of certain turfgrasses against weeds within the limitations of producing turfgrass areas of acceptable aesthetics and playing quality.

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Weed Control Using an Enclosed Thermal Heating Apparatus

Cited by 13 publications

References 42 publications

Evaluation of Mulch and Preemergence Herbicide Combinations for Weed Control in High-density Olive (Olea europaea L.) Production

Evaluation of Mulch and Preemergence Herbicide Combinations for Weed Control in High-density Olive (Olea europaea L.) Production

Using Flame for Weed control in Some Crops

Managing cool‐season turfgrass without herbicides: Optimizing maintenance practices to control weeds

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