Qualidade De Pulverização Hidropneumática Na Cultura Da Macadâmia

Ribeiro, Luis Felipe Oliveira

doi:10.21757/0103-3816.2022v34n1p81-88

Cited by 4 publications

(3 citation statements)

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“…Fine spray droplets (<150μm) have a wide range of application and promote a greater penetration of the solution into the target surface; however, smaller droplets are highly susceptible to drift and evaporation under inadequate weather conditions. Contrastingly, Ribeiro and Vitória (2022) found that medium droplets (200-400µm) present intermediate characteristics, being less susceptible to drift. However, the higher the VMD, the higher the chances of runoff of the product to non-target areas, causing serious environmental damages.…”

Section: Discussionmentioning

confidence: 74%

Simulated herbicide application between rows of black pepper crops

Ribeiro

Santos

Aiala

et al. 2023

Braz. J. Prod. Eng.

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The efficiency of applications through spraying is connected to the capacity to minimize losses by endo-drift and exo-drift while ensuring adequate coverage and deposition on the target surface; the spray nozzles is the main factor connected to application quality. However, few researches focus on technology of application in black pepper crops. The objective of this work was to evaluate the coverage of droplets of simulated herbicide applications using different spray nozzles. The experiment was conducted in a commercial crop area of black pepper of the variety Bragantina, in a randomized block with a 2×2+1 factorial arrangement with four replications per treatment. The nozzles used were XR11002 VP, AI11002 VS, with and without protector (Chapéu de Napoleão) and an additional treatment using the manual backpack sprayer standard nozzle without protector. The results showed that, under these conditions, the nozzle AI11002 VS with protector resulted in adequate coverage and deposition of droplets between rows decreasing the risk of phytotoxicity to black pepper plants. The nozzle XR11002 VP presented higher coverage of droplets in the lower third of black pepper plants. The backpack sprayer standard nozzle resulted in the lowest coverage of droplets between rows.

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Section: Discussionmentioning

confidence: 74%

Simulated herbicide application between rows of black pepper crops

Ribeiro

Santos

Aiala

et al. 2023

Braz. J. Prod. Eng.

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“…As an example, at the application rate of 45 L ha (lowest rate), the VMD was 167.4 µm, and at 100 L ha (highest rate) the VMD was 292.2 µm. Overall, in the different collection positions, when using the XR11015 nozzles, the droplet diameter ranged from 184.88 to 326.93 µm, the MGA015 nozzle provided drops with a volumetric median diameter of 142.37 to 357 µm, and both nozzles provided from fine to medium drops [53,54] when these were already on target, being subject to primary and secondary drift in inappropriate weather conditions. The values described are in accordance with the droplet classification described by the nozzles' manufacturers.…”

Section: Discussionmentioning

confidence: 99%

Impact of Operational Parameters on Droplet Distribution Using an Unmanned Aerial Vehicle in a Papaya Orchard

et al. 2023

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Papaya production and export is increasingly expanding in the world market due to the nutritional importance of the fruit. Phytosanitary issues, labor shortages, and unevenness in land-based costal and motorized applications compromise crops, the environment, and humankind. The purpose of this study was to evaluate the efficiency of droplet distribution using an unmanned aerial vehicle, with different application rates (12.0, 15.0, and 18.0 L ha−1) and spray nozzles (XR110015 and MGA015) in the upper (UL), middle (ML), and lower (LL) layers, and on papaya fruit clusters (BF). Water-sensitive paper labels and artificial targets were used to assess the efficiency. Coverage, density, droplet distribution, and droplet diameter were influenced by the application rates in the following order: 18.0 > 15.0 > 12.0 L ha−1, showing concentrated droplet distribution in the respective layers: UL > ML > LL > BF. The 18.0 L ha−1 rate increased the variables examined, and the droplet coverage on the UL using the XR110015 nozzle was 6.56 times greater than that found on the LL and BF. The MGA015 nozzle presented better results in the LL and BF in all variables analyzed. The UAVs were efficient in applying to the papaya crop and further studies should be carried out in order to confirm the efficacy of plant protection products applied using this technology.

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“…A pulverização hidráulica é uma das técnicas de aplicação mais utilizadas na agricultura devido à sua praticidade e flexibilidade. Para aumentar a qualidade das aplicações via pulverização, parâmetros operacionais, tais como, regulagem e calibração do equipamento pulverizador, pressão de trabalho (Ribeiro et al, 2022), taxa de aplicação (Vitória et al, 2023), faixa de aplicação, condições climáticas (Richardson et al, 2020), pontas de pulverização (Ribeiro et al, 2023a) e dentre outros, são os principais fatores que afetam a eficácia da aplicação.…”

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Espectro de gotas da ponta de pulverização TTI- 110025 sob diferentes pressões de trabalho

Ribeiro

Santos

et al. 2023

Braz. J. Prod. Eng.

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As pontas hidráulicas com indução de ar são amplamente utilizadas nas aplicações via pulverização, principalmente por diminuir o efeito da deriva primária. Entretanto, ainda há questionamentos quanto ao comportamento do espectro de gotas em determinadas pressões. Objetivou-se neste trabalho analisar o espectro de gotas da ponta com indução de ar TTI-110025 submetida às diferentes pressões de trabalho por meio de um analisador de partículas a laser em ambiente protegido. O experimento foi conduzido em delineamento inteiramente casualizado (DIC), representados pelas pressões 200, 300, 400, 500 e 600 kPa, com quatro repetições. As variáveis técnicas analisadas foram Dv0.1, DMV, Dv0.9, AR, % V < 100 μm e % V > 500 μm. A ponta TTI-110025 apresentou melhores resultados devido à diminuição das variáveis Dv0.1, DMV, Dv0.9 e % V > 500 μm à medida que aumentou a pressão de trabalho. O baixo valor da variável % V < 100 μm indicou baixo risco de deriva e o elevado valor % V > 500 μm sinalizou alto potencial de escorrimentos em aplicações pós-emergentes. Sugere-se operar a ponta TTI-110025 a pressão de 600 kPa.

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Qualidade De Pulverização Hidropneumática Na Cultura Da Macadâmia

Cited by 4 publications

References 0 publications

Simulated herbicide application between rows of black pepper crops

Simulated herbicide application between rows of black pepper crops

Impact of Operational Parameters on Droplet Distribution Using an Unmanned Aerial Vehicle in a Papaya Orchard

Espectro de gotas da ponta de pulverização TTI- 110025 sob diferentes pressões de trabalho

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