|
|
|
|
| |
|
|
| Landim,Thiago N.; Cunha,João P. A. R. da; Alves,Guilherme S.; Marques,Matheus G.; Silva,Sérgio M.. |
| ABSTRACT Adjuvants are tools to maximize pesticide spray quality. This study aimed to evaluate the interaction effects between adjuvants and the fungicide azoxystrobin + benzovindiflupyr on the physicochemical characteristics, droplet evaporation time, and spray droplet size. The experiment was carried out using a 2×6 factorial scheme, in which the first factor was the absence or presence of the fungicide mixture (water or water + fungicide) and the second factor was the presence of different adjuvants (water and five adjuvants). The parameters evaluated were surface tension, pH, viscosity, electrical conductivity, droplet evaporation time, volume median diameter, percentage of droplets smaller than 100 μm, and relative amplitude of the droplet spectrum.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spray solution additives; Droplet spectrum; Surfactants; Application technology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000500600 |
| |
|
|
| Assunção,Heli H. T. de; Silva,Sérgio M.; Alves,Guilherme S.; Zandonadi,Cesar H. S.; Cunha,João P. A. R. da. |
| ABSTRACT Electrostatic spray can bring benefits to the pesticide application such as the reduction of application rate and the increase of deposits on targets. Therefore, this study aimed to evaluate the effect of electrostatic spraying using lower application rates and different adjuvants on soybean spray deposition and chemical control of powdery mildew (Microsphaera diffusa Cooke & Peck). The field experiment was conducted in duplicate. A randomized complete block design with four replications in a 2 × 2 × 2 + 1 factorial scheme was used. The factors were two application rates, with and without droplet electrification, two spray solution compositions, and one additional treatment. Deposition on upper and lower leaves, spray loss to the soil, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Application rate; Droplet electrification; Application technology; Microsphaera diffusa. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000600721 |
| |
|
|
| Assunção,Heli H. T. de; Cunha,João P. A. R. da; Silva,Sérgio M.; Alves,Guilherme S.; Lemes,Ernane M.. |
| ABSTRACT It is a well-known fact that the application of pesticides can be improved using an electrostatic spray due to the reduction of the application rate and increase in deposition on plant targets. However, little information exists on the use of such technology in maize crops. Thus, this study is aimed to evaluate the spray deposition on maize resulting from spray application using an electrostatic sprayer in combination with low application rates and different spray compositions. A field experiment was conducted in a randomized block having a 2×2×2 factorial design with two application rates (95 and 52 L ha-1), with or without the spray electrification, and with or without the synthetic adjuvant. The droplet electrification ability, interference of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Application rate; Electrified droplet; Spray technology; Spray deposition. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400503 |
| |
|
|
|
