Effect of sprayer parameters and wind speed on spray retention and soil deposits of pesticides: Case of artichoke cultivar

Bahrouni, Hassouna; Chaâbane, Hanène; Marzougui, Nidhal; Meriem, Sana Ben; Bchini, Houcine; Abdallah, Mohamed

doi:10.17221/29/2021-pps

Cited by 4 publications

(6 citation statements)

References 18 publications

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“…Furthermore, the researchers confirmed that liquid retention on the plants increased with higher spray pressure. It is important to note that the tests presented in this publication were conducted at a lower wind speed of 0.3-0.6 m•s −1 , compared to the wind speed of 1.0-3.0 m•s −1 in the study by Bahrouni et al [40]. Virk et al [43] discovered that the coverage values in peanut cultivation varied depending on the type of nozzle used.…”

Section: Discussionmentioning

confidence: 89%

“…The research was carried out under field conditions. As in our study, Bahrouni et al [40] conducted tests under field conditions using two nozzle types, three nozzle sizes (02, 03 and 05), three pressures (300, 400 and 600 kPa) and different wind speeds ranging from 1.0 to 3.0 m•s −1 . During the spraying process, it is important to adjust the parameters that the operator can control, and these factors do not include wind speed.…”

Section: Discussionmentioning

confidence: 95%

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Optimisation of the Spraying Process of Strawberries under Varying Operational Conditions

Cieniawska,

Pentoś,

Komarnicki

et al. 2024

Agriculture

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Effective spraying is essential for modern agricultural production, to ensure a high-quality and abundant harvest. Simultaneously, it is crucial to minimise the negative impact of crop protection products on the environment. To achieve this, it is necessary to implement the appropriate technical and technological parameters for the treatment and to consider the conditions under which the treatment is carried out. The aim of this study was to determine the relationship between the speed of the sprayer, the pressure of the liquid, and the type of nozzles, as well as air temperature and wind speed, in terms of the degree of coverage of the sprayed surfaces. The degree of coverage was analysed by spraying water-sensitive papers placed on the artificial plant, positioned to obtain horizontal and vertical surfaces. The study found that standard single flat fan nozzles provided greater coverage on upper horizontal surfaces, while standard nozzles were more effective for vertical transverse approach surfaces at lower fluid pressures and travel speeds. Neural networks were used to develop models of the relationships studied. Models with high accuracy for the validation data set were obtained in the case of the coverage of the vertical transverse leaving surface and the upper level surface (R = 0.93 and R = 0.86). These models were used to determine the optimum values of the technical parameters of the spraying process under the selected weather conditions. The maximum spray coverage (41.49%) was predicted for the XR nozzle under the following conditions: pressure = 200 kPa, driving speed = 1.4 m·s−1, temperature = 21.73 °C and wind speed = 0.32 m·s−1. Based on the sensitivity analysis of the neural models it was found that the greatest effect on the coverage of the vertical transverse leaving surface was observed for temperature and the coverage of the upper level surface was mostly influenced by driving speed.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 95%

Optimisation of the Spraying Process of Strawberries under Varying Operational Conditions

Cieniawska,

Pentoś,

Komarnicki

et al. 2024

Agriculture

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“…There was corresponding equipment and sensors for their detection. Considerable research studied the effect of meteorological conditions on spray performance [55][56][57][58]. For instance, Nuyttens et al [56] detected wind speed, wind direction, temperature, and relative humidity using a Campbell scientific weather station supporting sensor in the test field and studied the effect of these weather factors on spray drift from field sprayers.…”

Section: Detection Of Meteorological Conditionsmentioning

confidence: 99%

Key Technologies for an Orchard Variable-Rate Sprayer: Current Status and Future Prospects

et al. 2022

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An orchard variable-rate sprayer applies the appropriate amount of plant protection products only where they are needed based on detection data from advanced sensors, a system that has attracted increasing attention. The latest developments in the detection unit, variable control unit, and signal-processing algorithm of the variable-rate sprayer are discussed. The detection of target position and volume is realized with an ultrasonic sensor, a laser scanning sensor, or other methods. The technology of real-time acquisition of foliage density, plant diseases and pests and their severity, as well as meteorological parameters needs further improvements. Among the three variable-flow-rate control units, pulse width modulation was the most widely used, followed by pressure-based, and variable concentration, which is preliminarily verified in the laboratory. The variable air supply control unit is tested both in the laboratory and in field experiments. The tree-row-volume model, the leaf-wall-area model, and the continuous application mode are widely used algorithms. Advanced research on a variable-rate sprayer is analyzed and future prospects are pointed out. A laser-based variable-rate intelligent sprayer equipped with pulse width modulation solenoid valves to tune spray outputs in real time based on target structures may have the potential to be successfully adopted by growers on a large scale in the foreseeable future. It will be a future research direction to develop an intelligent multi-sensor-fusion variable-rate sprayer based on target crop characteristics, plant diseases and pests and their severity, as well as meteorological conditions while achieving multi-variable control.

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“…Guiju et al 15 designed a V-shaped spraying device to investigate the effect of a V-shaped wind field on droplet deposit in the canopy and to reduce spray drift between fruit tree rows. Moreover, Changxi et al 16 designed a conical wind-field-type anti-drift spraying device to clarify the conical wind field's effect on the droplet deposit effect through spraying tests; reduce the ambient airflow velocity's effect on droplet movement using a conical wind field; reduce spray drift; analyze the anti-drift device's anti-drift principle; improve the anti-drift spraying effect; and optimize the device design.…”

Section: Introductionmentioning

confidence: 99%

Spraying performance of umbrella wind‐field‐type atomization and its application to parameter optimization

Li,

Zhang

et al. 2023

Pest Management Science

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BackgroundHere we designed an umbrella wind‐field‐type anti‐drift spraying device to improve droplet deposit in the fruit tree canopy, reduce spray drift between fruit tree rows, and avoid uneven droplet deposit in the canopy.ResultsWe use Computational Fluid Dynamics combined with wind field test to optimize the parameters of the anti‐drift spray device, and the results show that airflow velocity at the outlet of the device after optimization is 24.5 m/s, which is 48% higher than that before optimization (16.5 m/s) airflow velocity. We designed wind tunnel tests and field tests to analyze the anti‐drift characteristics of anti‐drift spraying device. Wind tunnel tests result showed that the side airflow velocity, outlet diameter, spray distance, and spray drift ratio were correlated. The mathematical models established by vertical and horizontal multifactor orthogonal tests were significant (P < 0.05, R2 0.947, 0.878, respectively). The results of the field tests showed that side airflow, velocity spray pressure and outlet diameter had significant effects on the droplet deposit characteristics (in descending order: the side airflow velocity, spray pressure, and outlet diameter). The maximum droplet deposit was 6.34 μL/cm2 when the side airflow velocity was 2 m/s, the spray pressure was 0.4 MPa, and the outlet diameter was 70 mm2.depositWhen the side airflow velocity exceeded 2 m/s, the outlet diameter and spray pressure had to be reduced to ensure better droplet deposit.ConclusionThe results indicated that the umbrella wind field could reduce spray drift and ineffective deposit in off‐target areas and can provide a reference for the comprehensive analysis of the spray drift deposit law.This article is protected by copyright. All rights reserved.

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Effect of sprayer parameters and wind speed on spray retention and soil deposits of pesticides: Case of artichoke cultivar

Cited by 4 publications

References 18 publications

Optimisation of the Spraying Process of Strawberries under Varying Operational Conditions

Optimisation of the Spraying Process of Strawberries under Varying Operational Conditions

Key Technologies for an Orchard Variable-Rate Sprayer: Current Status and Future Prospects

Spraying performance of umbrella wind‐field‐type atomization and its application to parameter optimization

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