Effects of nozzle types and 2,4-D formulations on spray deposition

Contiero, Robinson Luiz; Biffe, Denis Fernando; Constantin, Jamil; Oliveira, Rubem Silvério de; Braz, Guilherme Braga Pereira; Lucio, Felipe R.; Schleier, Jerome J.

doi:10.1080/03601234.2016.1241640

Cited by 15 publications

(20 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, the application of several chemicals through the AIXR nozzles increased the VMD in all situations compared to the standard XR nozzle (Ferguson et al 2015; Martini et al 2015). In another study, both 2,4-D choline and DMA formulations showed lower drift potential when applied through the ADIA nozzle (flat fan with air induction) in relation to the XR nozzle (Contiero et al 2016). Thus, GF-3073 and the air induction nozzles are a powerful combination for reducing 2,4-D movement to nontarget crops in the areas where 2,4-D-resistant crops are grown.…”

Section: Resultsmentioning

confidence: 98%

“…Although both chemical and mechanical tools have shown individual effects to control spray drift under field conditions, specific associations among them can result in different interactions. For example, a 2,4-D dimethylamine (DMA) formulation applied through drift-reduction nozzles had higher spray drift potential than did a 2,4-D choline formulation (Contiero et al 2016).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of Formulations and Spray Nozzles on 2,4-D Spray Drift under Field Conditions

Kalsing¹,

Rossi²,

Lucio³

et al. 2018

Weed Technol

Self Cite

View full text Add to dashboard Cite

Six trials were conducted during 2014/15 and 2015/16 growing seasons in Brazil to determine the effect of 2,4-D formulations and spray nozzles on 2,4-D spray drift under conventional field conditions. An experimental 2,4-D choline formulation with Colex-D® Technology (GF-3073) and a 2,4-D dimethylamine (DMA) formulation were applied with either XR and AIXR flat-fan spray nozzles. Each plot was 30 m wide by 24 m long (720 m2) with 60 glyphosate-resistant soybean rows spaced 50 cm apart and also 35 potted tomato plants distributed on a grid across the plot 5-m apart. Applications were performed one meter away from the plot edge perpendicular to the soybean rows when wind direction was parallel to the rows with less than 30 degrees of angle deviation. Spray drift treatments were applied in 100 L ha−1 with tractor sprayers at 276 kPa equipped with a 7-m wide boom at 50 cm above the canopy of the soybean plant, operating at 6.8 km h−1. The distance from the plot edge to the farthest plant with 2,4-D symptoms was assessed for every four soybean rows at 10 and 20 days after treatment (DAT) and potted tomatoes at 10 DAT. GF-3073 reduced the distance of the farthest injured plant with 2,4-D symptoms compared to the 2,4-D DMA formulation regardless of the spray nozzle, assessment date and sensitive species. GF-3073 applied through the AIXR nozzle reduced the relative drift affected area to the standard by 68% at 10 DAT and 67% at 20 DAT for soybean and 60% at 10 DAT for potted tomatoes.

show abstract

Section: Resultsmentioning

confidence: 98%

mentioning

confidence: 99%

Effect of Formulations and Spray Nozzles on 2,4-D Spray Drift under Field Conditions

Kalsing¹,

Rossi²,

Lucio³

et al. 2018

Weed Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recent advances with pesticide application technology includes spray nozzles (i.e., spray tips) that improve delivery of foliar applied herbicides (Contiero et al, 2016;Creech et al, 2015), and also utilize correct spray nozzles and techniques to reduce spray drift to non-target sites (Grella et al, 2020;Kalsing et al, 2018). The spray nozzle produces a spray pattern which contains spray droplets in various sizes depending on the nozzle type (ASABE, 2009;Lake, 1977).…”

Section: Introductionmentioning

confidence: 99%

Spray nozzle selection contributes to improved postemergence herbicide crabgrass control in turfgrass

et al. 2021

View full text Add to dashboard Cite

For optimum postemergence crabgrass (Digitaria spp.) control, a single quinclorac herbicide application could be properly timed and delivered with spray nozzles that produce spray droplets ranging from very coarse (401 - 500 µm) to medium (226 - 325 µm) in size to maximize target coverage and minimize the potential for drift. Crabgrass is an invasive annual grass weed of cool-season turfgrass maintain as lawns, golf courses, and sports pitches. Postemergence herbicide applications for crabgrass control in turfgrass swards often rely on repeated applications for effective control. Optimizing postemergence crabgrass applications can reduce pesticide inputs and contribute to sustainable turfgrass management practices. Two field studies evaluating crabgrass control were conducted in 2020 in a mixed stand of Kentucky bluegrass (Poa pratensis L.) with perennial ryegrass (Lolium perenne L.) in Ohio (USA) and in perennial ryegrass in Pennsylvania (USA). Both sites have histories of natural crabgrass [Digitaria sanguinalis (L.) Scop.] infestation. A postemergence herbicide, quinclorac, was applied at the product label rate and tank-mixed with methylated seed oil at the crabgrass plant stage of three leaf to one tiller. Different spray nozzles were selected to deliver the following spray droplet classifications and sizes at 275 kPa: Delavan Raindrop 1/4, ultra coarse (> 650 µm); TurfJet 1/4TTJO4, extremely coarse (501 - 650 µm); Air Induction AA8004 or XRTeeJet 8015, very coarse (401 - 500 µm); XR TeeJet 8008 or GreenLeaf TDAD04, coarse (326 - 400 µm); XR TeeJet 8004, medium (226 - 325 µm); and XRTeeJet 8003 fine (145 - 225 µm). Crabgrass pressure was low in Ohio, and herbicide efficacy at 60 days after treatment was considered acceptable when applied from all spray nozzles that produced pray droplet sizes ranging from ultra coarse to fine. Crabgrass pressure was severe in Pennsylvania, and herbicide efficacy at 60 DAT was considered marginally acceptable when applied from spray nozzles that produced spray droplet sizes ranging from very coarse to medium. Future research should consider cultural practices that would be complimentary to postemergence herbicide applications with the goal to further reduce pesticide use and minimize any potential environmental impacts related to spray drift. Highlights - In turfgrass sites with low crabgrass pressure, one postemergence application of quinclorac herbicide could potentially achieve acceptable control with spray nozzles that produce spray droplets ranging from ultra coarse (> 650 µm) to fine (145 - 225 µm). - In turfgrass sites with heavy crabgrass population and pressure, one postemergence application of quinclorac herbicide is best optimized with spray nozzles that produce spray droplets ranging from very coarse (401 - 500 µm) to medium (226 - 325 µm). - Overall, turfgrass management practitioners should avoid using spray nozzles that produce a hollow cone spray pattern with ultra coarse (> 650 µm) spray droplets which can result in poor or irregular herbicide coverage, or fine (145 - 225 µm) spray droplets which are subject to potential drift and possible negative off-target effects. - Overall, in an effort to reduce herbicide use for postemergence crabgrass control, a single quinclorac herbicide application could be properly timed and optimized with nozzles that produce spray droplets ranging from very coarse (401 - 500 µm) to medium (226 - 325 µm) in size, however, future research should consider cultural practices that would further optimize and also reduce herbicide applications.

show abstract

“…In addition, the adoption of these products in seed treatment, when compared to foliar application, reduces the number of operations to be carried out after the emergence of the crop. As a consequence, there is a reduction in the plant kneading in the crop and in soil compaction (Ferreira et al, 2020), a reduction in the risk of losses due to spraying (Contiero et al, 2016), beside saving machine, labor and time to spray the crop.…”

Section: Introductionmentioning

confidence: 99%

Agronomic Performance of Soybean With Seeds Treated With an Algae Extract Base Biostimulant

Melo¹,

Silva²,

Perín³

et al. 2020

JAS

View full text Add to dashboard Cite

The use of biostimulants in the treatment of soybean seeds can provide beneficial effects on the crop due to the synergism between the organic components present in products from natural compounds. Due to the scarcity of results of research on biostimulants in the treatment of soybean seeds, the objective of this study was to evaluate the effects of doses of a biostimulant in the treatment of seeds, on agronomic characteristics, productivity components and profitability of soybean culture. Therefore, two experiments were carried out in the field in the 2016/17 and 2017/18 harvests, using a randomized block design with six replications and four treatments referring to doses of 0.00; 0.05; 0.10; and 0.15 L 100 kg seeds-1. The agronomic characteristics of soybeans, grain yield and profitability of using the biostimulant were evaluated. From the obtained results, it can be seen that the dose of 0.15 L 100 kg seeds-1 provided greater profitability in both harvests. In addition, doses above 0.12 L 100 kg seed-1 provide higher grain yields and a higher grain mass, in addition to other productivity components.

show abstract

Effects of nozzle types and 2,4-D formulations on spray deposition

Cited by 15 publications

References 18 publications

Effect of Formulations and Spray Nozzles on 2,4-D Spray Drift under Field Conditions

Effect of Formulations and Spray Nozzles on 2,4-D Spray Drift under Field Conditions

Spray nozzle selection contributes to improved postemergence herbicide crabgrass control in turfgrass

Agronomic Performance of Soybean With Seeds Treated With an Algae Extract Base Biostimulant

Contact Info

Product

Resources

About