Performance of knapsack sprayer: effect of technological parameters on nanoparticles spray distribution

Alheidary, Majid Hazim

doi:10.14445/22315381/ijett-v46p235

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…The smallest volume median diameter (140µm) was observed at the bottom layer and 5bar operating pressure compared to other treatments. This result is in agreement with the results of [18,19].…”

Section: Spray Droplet Characteristicssupporting

confidence: 94%

“…A bigger volume median diameter (378µm) with (8.08% CV) was measured in the upper layers especially when applied the spraying application from the vertical position above the plant canopy at 2bar operating pressure in comparison with other treatments. This result is in agreement with the results of[18,19]. On the other hand, the operating pressure contributed to the significant differences in volume median diameters depending on the sample position in the plant canopy.…”

supporting

confidence: 93%

“…They immediately affect spray distribution [13] thenafter impact the performance and spray penetration into the zone target into crop canopy [14][15][16][17]. Hollow cone nozzles are widely used in Iraq with classes for various chemical applications at different crop alternatives [10,[18][19][20][21]. The achievement of spray nozzles may be varied depending on the operating conditions to which they are subjected, with variations in the quality of the application and, consequently, in the droplets spectrum [13].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Spray Droplets Characteristics Depending on the Configuration of Boomless Nozzle

Abraheem

Alheidary

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Using hollow cone nozzles is a common in different spraying processes for controlling the pests. The aim of the study was to evaluate the spray droplet characteristics deposited on the eggplant plants at flowering vegetative growth stage. The study was performed in a Complete Block Random Design (CBRD) with a 3x4 factorial scheme, consisting of three working pressures 2, 3, and 5 bar, and four spray patterns of nozzles with three blocks. For obtaining micro details about spray droplets characteristics, white paper cards were used, which later had their images digitized and analyzed by the ImageJ software. The following values were measured in this study: volume median droplet diameter, spray coverage percentage, and droplet density per centimeter square. Then, the values found were subjected to analysis to show the significance between them. These values were compared by t test at 5% probability level. For each factor, separately, the coefficients of variation were analyzed and then the correlation between these factors was performed. The main results showed that the spray droplet characteristics were affected by both of operating pressure and spray pattern configuration. Higher operating pressure of 5bar produced the smallest median diameter and greatest number of droplets, and spray coverage percentage. Results also showed that the using of a combination spray pattern led to an increase in droplet density thereby coverage percentage into plant canopy in comparison to other pattern configurations.

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Section: Spray Droplet Characteristicssupporting

confidence: 94%

supporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Evaluation of Spray Droplets Characteristics Depending on the Configuration of Boomless Nozzle

Abraheem

Alheidary

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The most common nozzle types used in agricultural spraying are flat fan nozzles and hollow cone nozzles. Several studies that performed on knapsack sprayer using Flat fan nozzle mounted on rode which proved the success of these nozzles in CPP (2,3,14,20). These studies indicated their success in CPP depends on the effectiveness of it's under field conditions.…”

Section: Introductionmentioning

confidence: 96%

“…In the field, nozzle performance is measured by different techniques as white papers cards (WPCs) has advantages including visualization, possibility to measure droplet characteristics after changing the colour paper to yellow due to tracer, calibration of the droplet density and spray impact (Fox et al, (10). White papers cards (WPCs) have been used by different researchers for measuring spray coverage and spray deposit (2,3,9,12,13,21,25). All previous studies in Iraqi farms used knapsack sprayer with a Flat Fan nozzle.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nozzle Type, Working Pressure, and Their Interaction on Droplets Quality Using Knapsack Sprayer

Alheidary¹

2019

IQ J Agr Scs

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The present experiment was carried out at the Dept. of Agricultural Machines and Equipment, College of Agriculture, University of Basrah. The aim of the study is to highlight the effect of the nozzle type, working pressure and their interaction onto droplet quality using knapsack sprayer to improve their performance. Droplet characteristics were sampled on white paper cards at different distances from the nozzle. On the samples spray deposits, spray coverage, droplet size, and volume median diameter was measured using BSF tracer with water after their deposit on the sample. The main studied parameters were: Six nozzle types hollow cone, Flat fan ceramic, flat fan ISO, CFA, AirMix and flat fan air induction nozzle. Two working pressures were 15 and 25 psi. All measurements carried out at the same nozzle height of 50cm by using CRD with three replications. The main results of this study showed the best spray deposition and spray coverage with the highest values 0.06nµl.cm -2 and 63% respectively when hollow cone nozzle was compared to other nozzles under the same operating conditions. Whereas, the Flat fan air induction nozzle appeared the most significant droplet size and VMD 377.69 µm and 378 µm respectively when it was compared to the hollow cone and flat fan nozzles.

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Effect of Vertical Boom Position of the Greenhouse Sprayer on the Penetration of Spray to the Eggplants Canopy

Oun,

Subr

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The research objective focuses on spraying the leaves of the plant from the top and bottom through a spraying machine designed and made of aluminum with a movable arm equipped with a nozzle holder divided into three parts and each piece contains a nozzle of the type (Flat Fan 120-C3) as the machine was tried in a greenhouse with a study of the effect of changing the positions of the upper and lower piece of the tube carrying the nozzles to four levels (A1, A2, A3, A4) and the effect of pressure change on two levels (2,4) bar and studying the effect of the previous factors on some of the characteristics of the study, Spray quality on adaxial of leaf, Spray quality on the abaxial surface of a leaf, spraying on all test sheets placed on the eggplant plant. The experimental design is RCBD according to the SPLIT-PLOT system and for three repeaters using the least significant difference (LSD) with a probability level of 0.05. The results showed that the A2 situation was significantly superior to all the studied qualities, and the pressure (4 bar) was significantly superior to all the studied qualities. As for the interaction position of boom (A4) with the pressure of (4bars), its result in all qualities was less than the rest of the coefficients, and it is not significant at the level of (0.05).

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Performance of knapsack sprayer: effect of technological parameters on nanoparticles spray distribution

Cited by 7 publications

References 7 publications

Evaluation of Spray Droplets Characteristics Depending on the Configuration of Boomless Nozzle

Evaluation of Spray Droplets Characteristics Depending on the Configuration of Boomless Nozzle

Influence of Nozzle Type, Working Pressure, and Their Interaction on Droplets Quality Using Knapsack Sprayer

Effect of Vertical Boom Position of the Greenhouse Sprayer on the Penetration of Spray to the Eggplants Canopy

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