Results 11 to 20 of about 2,278 (239)

Spray drift and droplet spectrum from dicamba sprayed alone or mixed with adjuvants using air-induction nozzles [PDF]

Pesquisa Agropecuária Brasileira, 2018
: The objective of this work was to evaluate the spray drift and droplet spectrum of dicamba applied alone or with potential drift-reducing adjuvants, using air-induction flat fan nozzles.
Guilherme Sousa Alves, Greg Robert Kruger, João Paulo Arantes Rodrigues da Cunha   +2 more
doaj   +2 more sources

Droplet spectrum of a spray nozzle under different weather conditions

REVISTA CIÊNCIA AGRONÔMICA, 2018
ABSTRACT The application of pesticides is always susceptible to losses through evaporation and drift of the spray droplets. With these losses, a smaller amount of pesticide reaches the target, possibly impairing the efficiency of phytosanitary control.
Maciel, Christiam Felipe Silva, Teixeira, Mauri Martins, Fernandes, Haroldo Carlos, Zolnier, Sérgio, Cecon, Paulo Roberto   +4 more
core   +6 more sources

BLADE ANGLE EFFECT ON DROPLET SIZE SPECTRUM OF ROTARY ATOMIZERS USED IN BRAZIL [PDF]

Engenharia Agrícola, 2016
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,
Carvalho, Fernando K., Antuniassi, Ulisses R., Chechetto, Rodolfo G., Mota, Alisson A.B., Kruger, Greg R.   +4 more
openaire   +7 more sources

HOW DO THE DROPLET SPECTRUM UNIFORMITY AND SPRAY VOLUME OF FLAT-FAN NOZZLES INFLUENCE FUNGICIDE SPRAY DISTRIBUTION QUALITY IN SOYBEANS?

Engenharia Agrícola, 2022
Droplet spectrum quality is essential to effectively control crop pests and diseases. This study aimed to characterize the droplet uniformity of the eight most popular flat-fan nozzles used by Brazilian farmers and relate it to their spraying quality ...
Fabiano Griesang, Marcelo da C. Ferreira, Ana B. D. Spadoni, Jaqueline F. Della Vechia, Renata T. da S. Santos, Cícero A. M. dos Santos   +5 more
doaj   +2 more sources

Pulse Width Modulation on the Droplet Spectrum and Velocity of Spray Nozzles

Agriculture
Pulse width modulation (PWM) allows for the real-time flow rate adjustment of spray nozzles without changing system pressure, indicating that PWM is a promising technology for improving the quality of pesticide applications. However, its effect on the droplet formation process is not yet fully understood.
Silviane Gomes Rodrigues, Guilherme Sousa Alves, João Paulo Arantes Rodrigues da Cunha   +2 more
openaire   +2 more sources

EFFECT OF NOZZLES, APPLICATION RATES, AND ADJUVANTS ON SPRAY DEPOSITION IN WHEAT CROPS [PDF]

Engenharia Agrícola, 2019
The use of insecticides is common in pest management in wheat crops but may lead to higher production costs and environmental contamination. Therefore, a more comprehensive and uniform distribution of plant protection products in the desired target is ...
Willian A. Machado, Sérgio M. Silva, Stephan M. Carvalho, João P. A. R. da Cunha   +3 more
doaj   +1 more source

Lineshape of rotational spectrum of CO in He4 droplets [PDF]

The Journal of Chemical Physics, 2008
In a recent experiment the rovibrational spectrum of CO isotopomers in superfluid helium-4 droplets was measured, and a Lorentzian lineshape with a large line width of 0.024K (half width at half maximum) was observed [von Haeften et al., Phys. Rev. B 73, 054502 (2006)].
Zillich, Robert E., Whaley, K. Birgitta, von Haeften, Klaus   +2 more
openaire   +3 more sources

Spectrum of droplets produced by use of adjuvants [PDF]

Idesia (Arica), 2013
Los adyuvantes son productos anadidos a la solucion de pulverizacion con el objetivo de auxiliar en la aplicacion de pesticidas. Sin embargo, sus efectos en los parametros tecnicos de la pulverizacion aun no estan totalmente aclarados. Siendo asi, el objetivo fue evaluar los efectos de la adicion de cinco adyuvantes (A, B, C, D y Y) y cinco diluciones (
Sasaki, Robson S, Teixeira, Mauri M, Alvarenga, Cleyton B, Santiago, Humberto, Maciel, Christiam F. S   +4 more
openaire   +2 more sources

INTERACTIONS BETWEEN ADJUVANTS AND THE FUNGICIDE AZOXYSTROBIN+BENZOVINDIFLUPYR IN HYDRAULIC SPRAYING [PDF]

Engenharia Agrícola, 2019
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 ...
Thiago N. Landim, João P. A. R. da Cunha, Guilherme S. Alves, Matheus G. Marques, Sérgio M. Silva   +4 more
doaj   +1 more source

Atomization Characteristics of a Hollow Cone Nozzle for Air-Assisted Variable-Rate Spraying

Agriculture, 2023
During variable-rate spraying in orchards, the atomization characteristics and distribution of droplets in and out of the target area can be affected by the sprayer pressure. In this study, a variable-rate spraying control system test bench was designed,
Feixiang Yuan, Chenchen Gu, Kechuan Yi, Hanjie Dou, Si Li, Shuo Yang, Wei Zou, Changyuan Zhai   +7 more
doaj   +1 more source