Efficacy Evaluati on of a New Spray?recovery Sprayer for Orchards

Panneton, B.; Thériault, R.; Lacasse, B.

doi:10.13031/2013.6102

Cited by 10 publications

(5 citation statements)

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“…Nevertheless, it is generally accepted that crop-pesticide application by spraying is an inefficient process (Salyani, Farooq, & Sweeb, 2007) and the quantity of the chemical that reaches the target is significantly less than that released from sprayer. Several studies (Balsari & Marucco, 2009;Panneton, Theriault, & Lacasse, 2001) have estimated that the amount of pesticide deposited on the target is not more than 55% of the volume sprayed and that the other 45% goes to the ground (w25%) or is lost as small airborne droplets (w20%). Any pesticide which is released from a sprayer but does not eventually have the desired biological effect on the target, can induce off-target pesticide resistance, increase costs for the grower, and increase chemical contamination in the environment (De Moor, Vereeckle, Jaeken, Lootens, & Vandecasteele, 2000;Giles & Downey, 2003).…”

Section: Introductionmentioning

confidence: 99%

Assessing the ability of image processing software to analyse spray quality on water-sensitive papers used as artificial targets

Cunha

Carvalho

Marçal

2012

Biosystems Engineering

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The performance of several commercial and experimental software packages (Gotas, StainMaster, ImageTool, StainAnalysis, AgroScan, DropletScan and Spray_imageI and II) that produce indicators of crop spraying quality based on the image processing of watersensitive papers used as artificial targets were compared against known coverage, droplet size spectra and class size distribution verified through manual counting. A number of artificial targets used to test the software were obtained by controlled spray applications and given droplet density between 14 and 108 drops cm À2 and a wide range of droplet size spectra. The results showed that artificial targets coupled with an appropriate image system can be an accurate technique to compute spray parameters. The betweenmethods differences were 6.7% for droplet density, 11.5% for volume median diameter, <3% for coverage (%) and <3% coverage density. For the 16 droplet class size distribution tested the between-methods differences were all <15%. However, most of the image analysis systems were not effective in accurately measuring coverage density when coverage rate is greater than about 17%. The Spray_imageII software estimated the coverage density with a mean absolute error of 2% and the absolute error is below 10%, even with about 43% of coverage rate. This software, when compared to the other programmes tested, provided the best accuracy for coverage and droplet size spectrum as well as for droplet class size distribution.

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Section: Introductionmentioning

confidence: 99%

Assessing the ability of image processing software to analyse spray quality on water-sensitive papers used as artificial targets

Cunha

Carvalho

Marçal

2012

Biosystems Engineering

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“…Uprkos kritikama upotrebe hemijskih sredstava za zaštitu bilja, farmer će nastaviti upotrebu i aplikaciju prskalicama (Panneton, et al 2001;2005;2007). Ako nije moguće uticati u tolikoj meri na upotrebu hemijskih sredstava, može se povećati efikasnost aplikacije.…”

Section: Uvodunclassified

Pesticide application quality in corn and stubble field

Višacki¹,

Sedlar²,

Bugarin³

et al. 2014

Savr poljopriv tehnika

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Uprkos kritikama upotrebe hemijskih sredstava za zaštitu bilja, farmer će nastaviti upotrebu i aplikaciju pesticida prskalicama. Ako nije moguće uticati u tolikoj meri na upotrebu hemijskih sredstava, može se povećati efikasnost aplikacije. Oduvek je postajala težnja da se na više različitih načina utvrdi kvalitet eksploatacije prskalice. To podrazumeva uticaj parametara rada na kvalitet depozicije pesticida, pokrivenost biljne mase i kvalitet spektra kapljica što zajendo čini efikasnost aplikacije pesticida sa stanovišta tehnike aplikacije pesticida. Verovatno brza a shodno tome i toliko pouzdana metoda kvaliteta aplikacije pesticida predstavlja upotreba vodo-senzitivnih papira. Vodosenzitivni papiri ili pločice su različite veličine i mogu biti veoma korisni za brz vizuelni pregled veličina kapljica od različitih tipova rasprskivača, gustine kapljica, distribucije tečnosti i visina penetracije u niže slojeve kod velike mase biljaka kao i gubitci na zemljištu. U ispitivanju kvaliteta aplikacije tri različita rasprskivača LU, IDK i IDKT sa uglom aplikacije od 120 o , pri normi od 220 l/ha, korišćen je vodosenzitivni papir. Vodosenzitivni papir je skeniran i analiziran u programu DepositScan.

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“…The amount and the distribution of the pesticides on the tree crown varies depending on the characteristics of the air jet (Khot et al, 2012). The air volume flow rate of the orchard sprayer and penetration of the air flow must be set to be sufficient to different tree crowns (Panneton et al 2001, Delele et al 2005, Garcia et al 2012. Beside this, the airflow need of orchard depends on the crown geometry of the tree, tractor velocity, vegetative development of the tree, foliage density, wind velocity (Chen et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Determination of the optimum operating parameters of an axial fan used on the conventional air blast orchard sprayer

Itmeç

Bayat

2021

International Journal of Agriculture Environment and Food Sciences

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The pesticide droplets are carried to the tree canopy with the assist of the air flow which is generated by an axial fan of orchard sprayer. The designers manufacture the fan of orchard sprayer with ability of 6 different working conditions under constant PTO speed. Previous studies were related to evaluating the effectiveness of sprayers. In this study, 6 different options that presented to farmers was evaluated with view of energy consumption and air flow. A Conventional orchard sprayer having an axial fan with 36" diameter was operated at two fan revolutions (1890 and 2430 rpm) and at three blade angles (15º, 30º, 45º), and measured air capacity, the fuel consumption, variations of air velocities in air jet profile of the fan and calculated power consumption for each operating parameters potentially to be chosen by farmers. As a result, for each blade angle, if the fan speed increase, the air jet of the fan become more uniform than before. The maximum fan efficiency and system efficiency were %73,25 and %59,98 respectively which were obtained 30 o blade angle and 2430 rpm fan rotation speed condition. The minimum fuel consumption and torque need was obtained under conditions of 15 o blade angle and 1890 rpm fan rotation speed. However, considering maximum air capacity and the best air velocity uniformity in the profile of fan jet was established at, 45 o blade angle and 2430 rpm fan rotation speed operating parameters.

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Efficacy Evaluati on of a New Spray?recovery Sprayer for Orchards

Cited by 10 publications

References 0 publications

Assessing the ability of image processing software to analyse spray quality on water-sensitive papers used as artificial targets

Assessing the ability of image processing software to analyse spray quality on water-sensitive papers used as artificial targets

Pesticide application quality in corn and stubble field

Determination of the optimum operating parameters of an axial fan used on the conventional air blast orchard sprayer

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