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Registros recuperados: 9
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Imprime registro no formato completo
BRILLIANT BLUE DYE REMOVAL IN FUNGICIDE SPRAYING REA
Oliveira,Rone B.; Marubayashi,Rodrigo Y. P.; Gandolfo,Marco A.; Alves,Karina A..
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)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Application technology; Adjuvants; Experimental methods.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300611
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Cana-de-açúcar: avaliação da taxa de aplicação e deposição do herbicida glifosato AGRIAMBI
Rodrigues,Euripedes B.; Abi Saab,Otavio J. G.; Gandolfo,Marco A..
No Brasil, o uso de agrotóxicos consumirá, anualmente, mais de seis milhões de m3 de água como veículo, na cultura da cana-de-açúcar. O menor volume de calda aumenta a autonomia e a capacidade operacional dos pulverizadores, diminuindo o risco de perdas por escorrimento. Este trabalho teve como objetivo comparar diferentes taxas de aplicação do glifosato quanto à eficiência no controle e à deposição da calda em plantas daninhas na operação de “repasse” ou “catação”. Foram executados oito tratamentos com quatro repetições distribuídos em blocos ao acaso. As taxas de aplicação avaliadas foram: 8,8, 73, 96,7, 190, 260, 380 e 467 L ha-1, aplicadas com equipamentos costal de acionamento manual, costal pressurizado e micronizador rotativo tipo CDA. Realizou-se a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tecnologia de aplicação; Agrotóxicos; Herbicidas; Saccharum spp.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011000100013
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Deriva de equipamentos costais na aplicação de glyphosate AGRIAMBI
Rodrigues,Euripedes B.; Abi-Saab,Otavio J. G.; Gandolfo,Marco A.; Oliveira,Rone B. de; Hasegawa,Marcio M..
RESUMOObjetivou-se, neste trabalho, comparar o risco potencial de deriva provocada por três equipamentos que utilizam diferentes taxas de aplicação do herbicida glyphosate. Os equipamentos avaliados foram: pulverizador costal de acionamento manual, pulverizador costal pressurizado e um pulverizador de micronização centrífuga acionado eletricamente. Os equipamentos foram testados com as pontas de pulverização AXI 110015 e AXI 11003. O risco potencial de deriva foi avaliado em túnel de vento com coletas nas distâncias de 5, 10 e 15 m em relação ao local de pulverização e nas alturas de 0,2; 0,4; 0,6; 0,8 e 1,0 m em referência ao túnel de vento. O pulverizador de micronização centrífuga acionado eletricamente apresentou risco de deriva inferior aos demais...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicida; Pontas de pulverização; Tecnologia de aplicação; Pulverizadores costais.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001001012
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Effect of working pressure at different spray nozzles on drift quantification in wind tunnel REA
Gandolfo,Marco A.; Carvalho,Fernando K.; Chechetto,Rodolfo G.; Gandolfo,Ulisses D.; Moraes,Eder D. de.
Each year, there is an increase in pesticide consumption and in its importance of use in the large-scale agricultural production, being fundamental the knowledge of application technology to the activity success. The objective of the present study was to evaluate the influence of working pressure on the drift generated by different spray nozzles, assessed in wind tunnel. The treatments were composed of two spray nozzles AXI 110015 and AXI 11002 with pressure levels of 276 and 414 kPa. The spray solution was composed by water and NaCl at 10%. The applications were conducted at wind speed of 2.0 m s-1, being the drift collected at 5.0; 10.0 and 15.0 m away from the spray boom and at heights of 0.2; 0.4; 0.6; 0.8 e 1.0 m from the tunnel floor. To both spray...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Application technology; Pesticides; Environmental contamination.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100008
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Performance of spray nozzles in land applications with high speed REA
Zaidan,Samir E.; Gadanha Jr,Casimiro D.; Gandolfo,Marco A.; Pontelli,Cristiano O.; Mosquini,Walter W..
The aim of this study was to evaluate different spray nozzles for land applications in high speed on the coverage and deposit in soybean plants pulverization. It was evaluated the AXI 110 04 plane jet nozzles operated at speed of 4.17m.s-1 (control), the grey APE and the AXI 110 08 plane jets, and the TD HiSpeed 110 06 and AXI TWIN 120 06 twin jets, at speed of 9.72m.s-1. The application volume was fixed in 120L ha-1. The application efficiency was evaluated by two different methods: analysis of the coverage area using fluorescent pigment and UV light and analysis of deposits through the recovery and quantification of FD&C N°1 brilliant blue marker by spectrophotometry. Both analyses were done in samples collected from top, middle and bottom parts of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spray nozzles; Speed; Soybean; Pulverizer.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600014
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Periodic inspection of sprayers: diagnostic to the northern of Paraná REA
Gandolfo,Marco A.; Antuniassi,Ulisses R.; Gandolfo,Ulisses D.; Moraes,Eder D. de; Rodrigues,Eurípedes B.; Adegas,Fernando S..
To optimize the use of pesticides, several countries have carried out periodic inspections in agricultural sprayers. In Brazil, knowing the conditions of this machinery canguide researches and investments in guidelines for its use and maintenance. The objective of this study was to verify the state of sprayer maintenance used in the North of the state of Paraná, in Brazil. Several sprayer items were evaluated, such as: presence, status and scale of the manometer, status of the hose, status of the anti-drip component, presence of leaks, status of the bar, status of the filters, state of the spraying nozzles and errors in the targeted flow rate. Machines were named as approved when there was no failure in any item evaluated. The factor that caused the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Periodic inspection; Sprayer; Quality of application.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200019
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POTENTIAL DRIFT AND INJURY OF HERBICIDES SPRAYED IN A WIND TUNNEL REA
Oliveira,Guilherme M. P. de; Gandolfo,Marco A.; Oliveira,Rone B. de; Oliveira,Stella M. P. de; Martins,Vinicius A..
ABSTRACT The possibility of synthetic auxin applications in crops increases the risk of injury to sensitive plants. The aim of this study was to quantify the drift of herbicides sprayed in a wind tunnel and the injury in cotton plants. The experimental design was a completely randomized design with five treatments and four replications. The tested spray solutions were dicamba (0.250 L c.p. ha−1), glyphosate (0.625 L c.p. ha−1), 2,4-D (0.250 L c.p. ha−1), glyphosate + 2,4-D (0.625 L c.p. ha−1 + 0.250 L c.p. ha−1), and glyphosate + dicamba (0.625 L c.p. ha−1 + 0.250 L c.p. ha−1). Drift was quantified in a wind tunnel, collected at distances of 5, 10, and 15 m in relation to the spray tip. Cotton plants were placed in the same wind tunnel and the injury was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dicamba glyphosate herbicide mixture application technology 2; 4-D.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100075
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Potential risk of drift from inclined fan nozzles AGRIAMBI
Moraes,Eder D. de; Saab,Otávio J. G. A.; Gandolfo,Marco A.; Marubayashi,Rodrigo Y. P.; Gandolfo,Ulisses D..
ABSTRACT 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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wind tunnel; Environmental contamination; Phytosanitary control; J3D.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300229
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SPRAYING QUALITY OF CROP PROTECTION PRODUCTS USING TWO DROPLET SPECTRA IN THREE PERIODS OF THE DAY REA
Graziano,Carlos E. P. L.; Alves,Karina A.; Gandolfo,Marco A.; Dario,Gustavo; Oliveira,Rone B..
ABSTRACT: Spraying of crop protection products can be affected by weather conditions and spray nozzles, altering deposition patterns and coverage of the target surface. The objective of this research was to analyze the quality of sprayings performed in three periods of the day (9:00 am, 2:00 pm, and 6:00 pm), using two different droplet sizes (fine and coarse) in soybeans. Coverage and deposition were evaluated in the upper, middle, and lower portion of soybean canopy. Spraying the products at 2:00 pm increased leaf coverage in the medium portion but also increased losses to the soil. Spray nozzles with fine droplet sizes provided greater coverage and deposition in the medium and upper portion of the crop for the sprayings performed in the morning. If...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coverage; Deposition; Endo-drift; Spraying time; Application technology.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601183
Registros recuperados: 9
Primeira ... 1 ... Última
 

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