Volumes de calda e adjuvante no controle de plantas daninhas com glyphosate

Bueno, Mariana Rodrigues; Alves, Guilherme Sousa; Paula, A.D.M.; Cunha, João Paulo Arantes Rodrigues da

doi:10.1590/s0100-83582013000300022

Cited by 14 publications

(12 citation statements)

References 20 publications

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“…This demonstrates the possibility of reducing the application volume with the use of nozzles which provide an ultra-coarse droplets size category with induction of air due to having lower losses by drift compared to fine and very fine droplets (Chechetto et al, 2013). 1 Glyphosate at the dose of 0.975 kg ha -1 of acid equivalent + antifoaming at the concentration of 0.0025% of v/v.…”

Section: Resultsmentioning

confidence: 94%

“…The droplet size combined with the application volume and products diluted in the spray mix may influence the distribution and deposition quality of products. Researchers in the phytosanitary area have been working to verify the possibility of reducing the application volume in agricultural sprays with different classes of phytosanitary products as herbicides (Ferreira et al, 1998;Bracamonte et al, 1999;Garcia et al, 2004;Rodrigues et al, 2011;Bueno et al, 2013;Almeida et al, 2014), insecticides (Bonadiman, 2008;Maziero et al, 2009;Pereira et al, 2012) and fungicides (Meneghetti 2006;Oliveira, et al, 2007;Cunha and Silva Júnior, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Classes de gotas e volumes de aplicação na dessecação de coberturas vegetais

Almeida¹,

Timossi

Lima

et al. 2015

RBHerbicidas

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-This study has aimed to verify the influence of the droplets size categories and application volumes on burn down Urochloa ruziziensis and Conyza sp. Therefore, two trials were conducted in a randomized block design with four replications in a 2x4 split plot arrangement. The plots consisted in droplets size categories (very fine droplets and ultra coarse droplets) and the subplots consisted in four application volumes (50, 100, 150 and 200 L ha -1 ). For desiccation, glyphosate herbicide was used at 0.975 and 1.3 kg of a.e. ha -1 for controlling plant covers Urochloa ruziziensis and Conyza sp., respectively. Saflufenacil herbicide was used at a dose of 49 g of a.i. ha -1 in association with glyphosate to control Conyza sp. In the application was used a pressurized sprayer by CO2 with spray nozzles model ATR 1.0 and AI 110015. At 5, 10, 15 and 20 days after application (DAA) of the herbicides, visual assessments were done of the control percentage of Urochloa ruziziensis and defoliation in Conyza sp. At 25 DAA, one regrowth percentage assessment of Conyza sp. plant was done. It is concluded that the category of ultra coarse droplets is efficient for desiccation of Urochloa ruziziensis with volumes of up to 50 L ha -1 , while the category of very fine droplets reduces the efficacy with reduced volume application. It was also found that reducing the application volumes increases the possibility of regrowth on burn down Conyza sp.

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Classes de gotas e volumes de aplicação na dessecação de coberturas vegetais

Almeida¹,

Timossi

Lima

et al. 2015

RBHerbicidas

View full text Add to dashboard Cite

show abstract

“…Nevertheless, drift potential should also be evaluated using lower carrier volumes. Bueno et al (2013) evaluated the effects of spray volumes and adjuvants on weed control using glyphosate sprayed through Turbo Teejet nozzles (TT 11002). The authors also observed similar glyphosate efficacy at 30, 60, and 150 L ha -1 , with or without the adjuvant nonyl phenol ethoxylate in solution.…”

Section: Resultsmentioning

confidence: 99%

Spray drift and efficacy from glyphosate and 2,4-D applications with adjuvants

Alves¹,

Cunha

Landim

et al. 2020

Biosci. J.

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Weed plants are one of main factors that affect the production of oilseed crops. Their management have been based on chemical control with herbicides, like glyphosate and 2,4-D, due to usefulness and efficiency of applications. However, their use must be managed correctly to mitigate the spray drift. Therefore, this study aimed to evaluate efficacy and spray drift from glyphosate and 2,4-D applications with adjuvants. The drift evaluation of herbicide solutions was conducted in a split-plot arranged in a randomized block design with five replications. Main plots consisted of three herbicide solutions at 150 L ha-1 (glyphosate + 2,4-D, glyphosate + 2,4-D + sodium lauryl ether sulphate, and glyphosate + 2,4-D + fatty acid esters). Sub-plots consisted of five downwind distances (1 to 10 m) from the sprayed area. It was used a fluorecent tracer and drift colectors. The efficacy trial was performed in a randomized block design with four replications in a 3 x 2 factorial scheme, being the same herbicide solutions and two carrier volumes (75 and 150 L ha-1). Droplet spectrum and weed depositon were evaluated and physicochemical properties of the herbicide solutions were characterized. Glyphosate + 2,4-D with or without adjuvants, sprayed using 75 or 150 L ha-1, resulted in similar deposition of tracer on weeds and their control. Those herbicides associated or not with sodium lauryl ether sulphate and fatty acid esters produce similar droplet spectrum and deposition of tracer on drift collectors.

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“…Currently, the chemical control method is the most used to inhibit the growth of invasive plants, which includes the use of synthetic herbicides, in large quantities, mainly by large producers, as reported by some authors [20,21]. The use of synthetic and toxic chemical herbicides in management areas promotes the death of weeds in a selective way and, consequently, it ends the competition among the plants, helping to increase the production of green mass in the pasture [22].…”

Section: Control Of Invasive Plantsmentioning

confidence: 99%

Potentially Phytotoxic of Chemical Compounds Present in Essential Oil for Invasive Plants Control: A Mini-Review

Oliveira¹,

Costa²,

Bezerra³

et al. 2018

Biological Approaches for Controlling Weeds

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The control of invasive plants is still carried out with the use of synthetic chemical agents that may present high toxicity and, consequently, be harmful to humans and animals. In Brazil, especially in the Amazon, small producers use this kind of technique in a rustic way, with brushcutters or fire. In this sense, the search for natural agents with bioherbicide potential becomes necessary. Examples of these agents are the essential oils that over the years have been shown to be a viable alternative to weed control. Thus, this review aims to show the potentially phytotoxic activity of allelochemicals present in essential oils of different aromatic plants.

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Volumes de calda e adjuvante no controle de plantas daninhas com glyphosate

Cited by 14 publications

References 20 publications

Classes de gotas e volumes de aplicação na dessecação de coberturas vegetais

Classes de gotas e volumes de aplicação na dessecação de coberturas vegetais

Spray drift and efficacy from glyphosate and 2,4-D applications with adjuvants

Potentially Phytotoxic of Chemical Compounds Present in Essential Oil for Invasive Plants Control: A Mini-Review

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