Electrostatic Charging of Aerial Spray Over Cotton

Carlton, J. B.; Bouse, L. F.; Kirk, I. W.

doi:10.13031/2013.27989

Cited by 26 publications

(16 citation statements)

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“…A high‐voltage cable provided power from the interior end of the busbars to the ( ± ) power supplies. The remainder of the wiring, electrical equipment and operational procedure has been fully described in the literature 3. The entire boom system was aerodynamically designed to provide low drag and stability against vibration.…”

Section: Methodsmentioning

confidence: 99%

“…Previous work reported that, in China, electrostatic‐charged sprays of malathion from a tractor‐mounted sprayer resulted in longer residual activity against locust than uncharged sprays 2. Further research demonstrated that aerial electrostatic sprays caused 4.3 times greater dye tracer deposition on cotton compared with uncharged sprays 3, 4. To guide further research in this area, it is important to know whether or not increased electrostatic spray deposits on cotton will result in enhanced control of whiteflies.…”

Section: Introductionmentioning

confidence: 97%

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Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (Bemisia tabaci) on cotton

Latheef¹,

Carlton²,

Kirk³

et al. 2009

Pest Management Science

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The amenability of electrostatic-charged sprays to a wide array of pesticides with different chemistries should be a useful tool in combating insect resistance. Results reported here suggest that the potential exists for obtaining increased efficacy against whiteflies using an electrostatic spray charging system, and that additional research will be required to improve charge-to-mass (Q/M) ratio in order to increase deposition of pest control materials to the lower surfaces of cotton leaves where the whiteflies reside.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (Bemisia tabaci) on cotton

Latheef¹,

Carlton²,

Kirk³

et al. 2009

Pest Management Science

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show abstract

“…Ceres, Viçosa, v. 64, n.5, p. 476-485, set/out, 2017 abaixo do nível mínimo de 0,80 mC kg -1 , o que torna a pulverização eletrostática mais eficiente, de acordo com Carlton et al (1995). Isso pode ser explicado pela característica peculiar do sistema eletrostático analisado, que não possui um sistema próprio de geração de tensão, já que a corrente contínua, gerada a partir do motor 2 tempos, apresentava picos.…”

Section: Resultsunclassified

Estudo de um sistema de eletrificação de gotas em pulverizador costal pneumático pelo método de gaiola de Faraday

et al. 2017

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Estudo de um sistema de eletrificação de gotas em pulverizador costal pneumático pelo método de gaiola de Faraday 1 A aplicação inadequada de agrotóxicos pode causar sérios problemas ao ambiente e o emprego de gotas com pequeno diâmetro pode favorecer a cobertura dos alvos, porém desde que ela aconteça em condições especiais para minimizar a deriva. Objetivou-se, com este trabalho, analisar os fatores que influenciam a relação carga/massa (Q/M) gerada por um sistema de eletrificação de gotas em um pulverizador pneumático costal com kit eletrostático por meio de uma gaiola de Faraday. Montaram-se dois experimentos, o primeiro em delineamento inteiramente casualizado, a fim de verificar a influência da distância entre o pulverizador e o alvo, a vazão de aplicação e a calda de pulverização, no funcionamento do sistema de eletrificação de gotas. Neste experimento, avaliaram-se quatro distâncias (0; 0,5; 1,0 e 2,0 m) entre o pulverizador e a gaiola. No segundo experimento, em esquema fatorial, analisaram-se cinco composições de caldas e cinco vazões (0,25; 0,76; 1,00; 1,45; e 1,58 L min -1 ). A relação Q/M foi determinada por meio da medição da corrente elétrica a partir do volume de calda pulverizado em gaiola de Faraday com um multímetro, dividida pela respectiva massa de líquido. Analisou-se, também, o espectro de gotas produzidas pelo pulverizador, em analisador de partículas por difração de raio laser. Verificou-se que, com o aumento da vazão de pulverização na gaiola de Faraday, menor foi a relação Q/M, o que também ocorreu com a distância do bocal do pulverizador eletrostático da entrada da gaiola. Em relação à calda de pulverização, a relação Q/M aumentou com a adição de óleo mineral, do óleo vegetal e de inseticida. Concluiu-se que a distância entre o bocal do pulverizador e o alvo, a vazão e a calda de aplicação influenciam na eficiência da pulverização eletrostática. Palavras Study of a droplet electrification system in a backpack sprayer in a Faraday cageThis study evaluated the factors affecting the charge/mass ratio (Q/M) generated by a droplet electrification system in a backpack sprayer with an electrostatic kit, using a Faraday cage. Two experiments were conducted in completely randomized design to determine the effect of application rate, the distance between the nozzle and the target, and spraying mixtures on performance of the droplet electrification system. The first study evaluated four distances (0, 0.5, 1.0, and 2.0 m) between the nozzle and the Faraday cage; the second study was conducted in a factorial design, with five tank mixtures and five flow rates (0.25, 0.76, 1.00, 1.45, and 1.58 L min -1 ). The Q/M ratio was determined using a multimeter by measuring the electric current from the volume of mixture sprayed in the Faraday cage, which was divided by the respective liquid mass. Droplet spectrum was analyzed by a particle analyzer using laser diffraction. The Q/M ratio became smaller as the spraying flow rate increased, similarly as observed with increasing distances of the electros...

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“…Laryea and No (2003) also reported the development of an electrostatic cone nozzle. Using these nozzles, higher spray deposits on cotton were obtained with a bipolar charging system (Carlton et al, 1995). Charged droplets attracted back to the electrode were reatomised as the electrode rotated at the same speed as the atomiser.…”

Section: Electrostatically Charged Nozzles Induction Charging Nozzlesmentioning

confidence: 99%

“…The environmental need to reduce the off-target amount of pesticide active ingredient dispensed into treated crop fields has led to charged-spray research incorporating electric forces of attraction to improve dose transfer via chargeddroplet deposition onto target surfaces (Bailey, 1986;Carlton et al, 1995;Law, 1986Law, , 1987Marchant, 1987;Matthews, 1989). However, despite considerable research, the use of charged agricultural sprays has continued to be limited.…”

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confidence: 99%

Electrostatically charged sprays

Law¹

2014

Pesticide Application Methods

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Electrostatic Charging of Aerial Spray Over Cotton

Cited by 26 publications

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Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (Bemisia tabaci) on cotton

Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (Bemisia tabaci) on cotton

Estudo de um sistema de eletrificação de gotas em pulverizador costal pneumático pelo método de gaiola de Faraday

Electrostatically charged sprays

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