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| Mota,Alisson A. B.; Antuniassi,Ulisses R.; Chechetto,Rodolfo G.; Oliveira,Rone B. de; Silva,Anne C. A. e. |
| The air included in droplets generated by spray nozzles directly int0erferes in transport, deposition and retention of the droplets after its impact on the target. The objective of this study was to analyze the interference of adjuvants in the amount of air included in droplets generated by spray nozzles. The treatments were composed by four spray solutions containing mineral oil, vegetable oil, surfactant and water, and three spray nozzles, two air induction type and one pre-orifice. The air included was calculated by the difference between the volume of spray mix (air plus liquid) and only the liquid, which was made by means of sprayed samples captured in a funnel and collected in a graduated cylinder. The surface tension was estimated by the gravimetric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Application technology; Air induction; Pre-orifice; Surface tension. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600020 |
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| Carvalho,Fernando K.; Antuniassi,Ulisses R.; Chechetto,Rodolfo G.; Mota,Alisson A. B.; Kruger,Greg R.. |
| ABSTRACT The effect of blade angle on droplet size spectrum of five rotary cage atomizers and one rotary disc atomizer used in Brazil was evaluated in a high speed wind tunnel, with an air speed of 180 km h−1. This study included the characterization of the droplet size spectrum, via laser diffraction instrument, generated by three blades angles, of 45, 60 and 75 degrees. The spray solution was composed of Picoxystrobin+ Cyproconazole fungicide (SC), at 20 mL c.p. L−1, and at a flow rate of 6 L min−1. As the angle decreased from 75 to 45 degrees, the rotational speed of the atomizers increased and the volume median diameter (VMD) decreased. However, increasing the rotational speed also increased the percentage of droplets smaller than 100 µm (% < 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Application technology; Atomization; Spray drift; Pesticides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601118 |
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