Espectro De Gotas Gerado Por Diferentes Adjuvantes E Pontas De Pulverização

Chechetto, Rodolfo Glauber; Antuniassi, Ulisses Rocha

doi:10.17224/energagric.2012v27n3p130-142

Cited by 15 publications

(7 citation statements)

References 10 publications

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“…The results obtained in the present study corroborate those found by Chechetto & Antuniassi (2012), Chechetto et al (2013) and Madureira et al (2015), who evaluated drift in wind tunnel and concluded that the air-induction nozzle led to lower values of drift in comparison to other models of spray nozzle.…”

Section: Resultssupporting

confidence: 91%

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Potential risk of drift from inclined fan nozzles

Moraes

Saab

Gandolfo

et al. 2019

Rev. bras. eng. agríc. ambient.

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Pest, disease and weed control in large-scale crops depend on the application of agrochemicals. These applications are subject to several factors that can lead to drift. The objective of this study was to evaluate the effect of spray nozzles with inclined flat jet, on the drift. The drift was collected in a 10 m wind tunnel, with a spray system inside. The samples were collected in 5 horizontal points, from 2.0 to 6.0 m away from the spray nozzle and 5 points in the vertical, from 0.1 to 0.5 m away from the lower base of the wind tunnel, totaling 25 sample points. The mixture applied was glyphosate (isopropylamine salt, 1080 g a.e. ha-1) with 2,4-D (dimethylamine salt, 1.005 g a.e. ha-1). The nozzles J3D 100 025, JGC 120 02, JAP 110 015 and ADI 110 015 (control), inclined by 37.5º, 20º, 15º and 0º, respectively, were used in two directions of spray: upwind and downwind of the air flow direction. The nozzles J3D, JGC and JAP, when inclined downwind reduced the drift by 16.1, 2.6 and 39.0%, respectively, relative to the control, and when inclined upwind, reduced drift by 53.4, 3.9 and 18.6%, respectively, relative to the control. Spray nozzles with second-generation air-induction inclined flat jet (JAP) and standard inclined flat jet (J3D) reduce the collected drift compared to the nozzle without inclination, regardless of wind flow direction.

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Section: Resultssupporting

confidence: 91%

“…For the parameter % < 100 µm, the correlation is positive, strong and significant. This indicates that the increase in collected drift is proportional to % < 100 µm, corroborating with Chechetto & Antuniassi (2012).…”

Section: Resultssupporting

confidence: 80%

Potential risk of drift from inclined fan nozzles

Moraes

Saab

Gandolfo

et al. 2019

Rev. bras. eng. agríc. ambient.

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“…Again the VMD values verified in the ground spraying in the second year of the research were high, reinforcing the claim that tips with air induction produce drops of greater size and weight (CHECHETTO & ANTUNIASSI, 2012).However they are within the average of reality practiced in most of the crops in the state of Parana, according to data recorded by SILVEIRA et al (2006). In Figure 7, there is the results obtained in aerial treatment in 2014, the values for volume coverage and VMD in the upper third were higher than the other thirds of the corn, with significant difference (P <0.05).The coverage volume showed averages of 93.11; 72.8 and 59.78; L ha -1 at the upper, middle, and lower thirds, respectively, with its minimum point of 14.04 L ha -1 using an application rate of 21.32 L ha -1 (Figure 7.C).…”

Section: Resultssupporting

confidence: 67%

Aerial and Ground Application of Fungicide in Corn Second Crop on Diseases Control

et al. 2017

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ABSTRACT:The aim was to evaluate the diseases severity on corn second crop. The research was conducted on the agricultural year of 2013 and 2014, evaluating the application quality over the fungicide spraying. The hybrid used was PIONEER 30k75 BT HERCULEX, evaluating the diseases severity previously and after the fungicide spraying, spray deposition on the culture and productivity. The aerial application was carried out with solution volume of 7.5, 13.5, 20 and 30.3 L ha -1 , using automatic rotating nozzles, and the ground application with 90, 110, 130 and 150 L ha -1 , uniform flat spray tips. As control a non-fungicide treatment was used. The aerial and soil treatment showed diseases control from the corn crop, being the biggest cover of drops acquired at the volumes 30.30 L ha -1 for aerial and 150 L ha -1 for soil, with no significant change on the productivity of the corn harvest for both forms of spraying: aerial or soil.

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“…In the first washing, the addition of vegetable oil to fungicide solution hampered the removal process if compared to the mineral oil or surfactant (Figure 4). Studies with spray solution containing plant protection products and adjuvants are important so that the generated droplet spectrum has characteristics close to reality (CHECHETTO & ANTUNIASSI, 2012). Spray solutions containing solely fungicide presented an intermediate dye removal, i.e.…”

Section: Resultsmentioning

confidence: 99%

Brilliant Blue Dye Removal in Fungicide Spraying

et al. 2017

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ABSTRACT:The method used for removal of brilliant blue dye may have an influence in interpreting the results of spraying deposition studies. The aim of this study was to assess the number of washings and water volumes for brilliant blue dye removal from soybean leaflets and glass slides in fungicide sprayings with and without adjuvants. A completely randomized experimental design was used in a 3 × 3 × 2 × 4 factorial scheme. The factors consisted of number of washings (1st, 2nd, and 3rd), water volume (15, 20, and 30 mL), target type (soybean leaflets and glass slides), and spray solutions (fungicide ProdutorBR ® 0.5 L ha −1 without and with the adjuvants vegetable oil Agr'óleo ® 0.5% v v −1 , mineral oil Nimbus ® 0.5% v v −1 , and surfactant Silwet ® 0.04% v v −1 ). Sprayings were carried out by using the nozzle model TT110015 at a pressure of 300 kPa (medium droplets). After spraying, targets were washed and the amount of brilliant blue dye removed per target area was detected by spectrophotometry. Brilliant blue dye removal is higher in glass slide when compared to soybean leaflets. With a single washing, a higher difficulty in removing the brilliant blue dye was observed for fungicide with vegetable oil. Only the first washing and a water volume of 15 mL are insufficient for brilliant blue dye removal from soybean leaflets and glass slides.

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Espectro De Gotas Gerado Por Diferentes Adjuvantes E Pontas De Pulverização

Cited by 15 publications

References 10 publications

Potential risk of drift from inclined fan nozzles

Potential risk of drift from inclined fan nozzles

Aerial and Ground Application of Fungicide in Corn Second Crop on Diseases Control

Brilliant Blue Dye Removal in Fungicide Spraying

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