Construction and Practical Application of a Canopy Opener Device

Prado, Evandro Pereira; Pogetto, Mário H. F. do A. Dal; Cerqueira, Denise Tourino Rezende de; Raetano, Carlos Gilberto; Costa, Saulo I. de A

doi:10.1590/1809-4430-eng.agric.v36n6p1126-1135/2016

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…Nas culturas da soja e milho verifica-se maior porcentagem de cobertura de gotas no topo das plantas, em relação ao terço inferior com aplicações terrestre e aérea (SCHRODER, 2007;CUNHA et al, 2010). De fato, a penetração das gotas de pulverização nas partes inferiores das plantas é muito difícil, principalmente quando as plantas apresentam um grande índice de área foliar (PRADO et al, 2016).…”

Section: Qualidade Da Cobertura Na Aplicação De Fungicidasunclassified

EFEITO RESIDUAL DE FONTES FOSFATADAS, CALCÁRIO E SILICATO E NO DESENVOLVIMENTO DE Avena strigosa

Silva¹,

Nolla²,

Bordin³

et al. 2020

Desafios E Sustentabilidade No Manejo De Plantas 2

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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Section: Qualidade Da Cobertura Na Aplicação De Fungicidasunclassified

EFEITO RESIDUAL DE FONTES FOSFATADAS, CALCÁRIO E SILICATO E NO DESENVOLVIMENTO DE Avena strigosa

Silva¹,

Nolla²,

Bordin³

et al. 2020

Desafios E Sustentabilidade No Manejo De Plantas 2

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“…Canopy openers are used to effectively open an internal space within the crop canopy [12], and they are not affected by the canopy characteristics [13]. Give droplets more opportunities to reach the middle and lower parts of the canopy, increasing droplet penetration in the crop canopy [14].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Analysis of Rice Canopy Using Explicit Dynamics and Practical Applications of Canopy Opener

Jing,

Wei,

Song

et al. 2023

Agronomy

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Open-canopy pesticide application technology is not affected by the canopy structure and can substantially increase droplet penetration and deposition in the middle and lower rice canopy. However, the optimal working position of the canopy opener is difficult to determine. The purpose of this study was to examine the characteristics of rice canopy disturbances under the action of a canopy opener, verify simulation results using high-speed photography tests, and identify the spraying effect of the optimal operating parameters of a canopy opener through spray tests. The mechanical characteristic parameters of the rice heading stage were determined through experiments, and the canopy-opening process was simulated based on the finite element method of explicit dynamics. The simulation results show that when the speed of the canopy opener is 1.2 m s−1 and the height is 0.6 m, the rice canopy is the most disturbed. The spray experiment results show that under this condition, the overall coverage rate of the rice canopy is relatively high, and the coverage rates of the upper, middle, and lower layers of rice are 92.18%, 66.43%, and 52.84%, respectively.

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“…Usually composed of conduits or pipes installed in front of the spray arm, it has the characteristics of simple structure, high reliability, and minimal mechanical damage to plants. The canopy-opening device can effectively open the internal space of the crop canopy (Wu and Wei, 2019) and is not affected by the characteristics of the canopy (Prado et al, 2016), making it easier for droplets to reach the middle and lower layers of the canopy, improving the permeability and uniformity of droplets in the crop canopy (Wang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Study on the movement mechanism of rice stem under the action of canopy-opening device based on explicit dynamics simulation

Jing,

Wei,

Song

et al. 2023

Front. Plant Sci.

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The dense canopy of rice causes attenuation of droplet dispersion during pesticide application. The canopy-opening device can increase droplet deposition in the middle and lower canopy of rice by causing disturbance to the rice canopy. However, the conditions for use of the canopy-opening device are difficult to determine. Rice morphological structure parameters and material parameters were measured to study the movement mechanism of the rice stems under the action of the canopy-opening device, and the canopy-opening process was then simulated using the explicit dynamic method. The simulation scene of the rice canopy-opening process considered the combination of three different heights and three different driving velocities of the canopy-opening device. The movement mechanism of the rice stems under the operation of the canopy-opening device was investigated, and the entire movement process was separated into two stages: contact and oscillation. The simulation results and high-speed photography experimental results show a strong correlation, with a correlation coefficient of 0.733. The simulation results indicate that when the canopy-opening device is closer to the ground and the driving velocity is higher, the disturbance to the rice stem during the contact stage is stronger. However, for the oscillation stage, there exists a critical value for both the height and driving velocity of the canopy-opening device. During the oscillation stage, there is a critical value for both the height and driving velocity of the canopy-opening device. The numerical-based explicit dynamics approach was employed in this work to investigate the rice canopy motion mechanism, and this study has a definite reference value for the investigation of complicated motion mechanisms in the field crop production process.

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Construction and Practical Application of a Canopy Opener Device

Cited by 4 publications

References 11 publications

EFEITO RESIDUAL DE FONTES FOSFATADAS, CALCÁRIO E SILICATO E NO DESENVOLVIMENTO DE Avena strigosa

EFEITO RESIDUAL DE FONTES FOSFATADAS, CALCÁRIO E SILICATO E NO DESENVOLVIMENTO DE Avena strigosa

Mechanical Analysis of Rice Canopy Using Explicit Dynamics and Practical Applications of Canopy Opener

Study on the movement mechanism of rice stem under the action of canopy-opening device based on explicit dynamics simulation

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