The Influence of the Water Quality on the Droplet Spectrum Produced by Agricultural Nozzles

Parafiniuk, Stanisław; Milanowski, Marek; Subr, Alaa

doi:10.1016/j.aaspro.2015.12.018

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…The nigrosin concentration in the water was 0.38%. No influence was assumed of the chemical composition of water and nigrosin on the size of drops generated by the spray gun (Parafiniuk et al 2015). The research related to the settlement of the liquid was carried out on natural mustard plants that had been replanted from a field to boxes and placed under the drone.…”

Section: Fig 1 View Of Test Standmentioning

confidence: 99%

Use of Drones in Crop Protection

Berner¹,

Chojnacki²

2017

Farm Machinery and Processes Management in Sustainable Agriculture, IX International Scientific Symposium

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Modern management in sustainable agriculture requires the fast information about condition of cultivated plants and the quick response to undesirable phenomena such as appearance of pests. The use of drones for spraying plants will allow for rapid application of plant protection agents on the growing areas. In this paper were presented results of research into the impact of rotors rotary speed of moving drone on the spray deposition on plant surfaces. The liquid was sprayed from the drone with the use of the XR 11002 flat fan nozzle at the pressure 0.2 MPa. The drone moved on a track with the permanent speed of 1.3 m•s-1. The liquid sprayed, which was water coloured with nigrosin, settled on foil testers that were secured on three levels (the upper leaf surface, the middle part of the plant, the level of soil under plants) in mustard plants. The height of the sprayer nozzle mounted on the drone over the plants was 0.6 m. The tests were conducted at the zero speed of the rotors and at rotations of 1500 and 4000 revolutions•min-1. The impact was found of the rotational speed of the drone rotors on the change of the distribution of liquid settling on the testers.

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Section: Fig 1 View Of Test Standmentioning

confidence: 99%

Use of Drones in Crop Protection

Berner¹,

Chojnacki²

2017

Farm Machinery and Processes Management in Sustainable Agriculture, IX International Scientific Symposium

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“…They reduce the level of the surface tension of liquid, so they enable coverage more surface of the leaf blade and at the same time they increase absorbing properties of plants. An additional benefit of adjuvants is availability of combining various types of plant protection agents and their use during one treatment [46].…”

Section: Discussionmentioning

confidence: 99%

“…Sprayers wear out during operation and the parameters of their work change. These changes are expressed by the increase in the flow rate of the liquid as well as the spectrum of droplets produced (VMD) [46].…”

Section: Discussionmentioning

confidence: 99%

Application of Non-Parametric Bootstrap Confidence Intervals for Evaluation of the Expected Value of the Droplet Stain Diameter Following the Spraying Process

et al. 2019

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In the era of sustainable agriculture, the issue of proper and precise implementation of agrotechnical operations, without harmful effects on the natural environment, begins to play an important role. Statistical tools also become important, for example, when assessing the malfunction of plant cultivation equipment. The study presents a comparison of six nonparametric bootstrap methods used for construction of confidence intervals for the expected value of an average diameter of droplet stains following the spraying process. The simulation tests were carried out based on experiment with nozzle sprayer Lechler 110-03 using two spray nozzles: a new one and an old one. It was assumed that the distribution of the droplet stain size was consistent with the lognormal distribution. The paper considers the influence of the sample size, mean value and standard deviation of the droplet stain diameter on the interval range as well as on the estimated coverage probabilities of the confidence intervals. It was shown that in general these methods can be applied for this purpose. For the double bootstrap method and the studentized method, the empirical confidence levels of the constructed intervals turned out to be less distinct than the assumed level but the lengths of these intervals were greater than the lengths of intervals obtained using the other four methods.

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“…It is the quality of water for formulation that changes spray characteristics. This is because hardness of water minimises droplet sizes that nozzles produce (Parafiniuk et al, 2015). But irrespective of water quality and formulation characteristics, consideration of nozzle type determines the sizes of spray droplets and swath patternation.…”

Section: Effect Of Nozzle Type On Spray Droplets Characteristicsmentioning

confidence: 99%

Assessing Nozzle Geometry, Spacing and Height Effect on Pesticide Spray Characteristics and Swath from Ground and Aerial Sprayers

Appah

Jia

et al. 2020

ESJ

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Nozzle is the basic aperture that controls pesticide spray jet onto targeted substrates. It is moulded from stainless steel, brass, ceramic and plastics at different wear rates. The efficiency of pesticide application is dependent on chemical efficacy and nozzle type. Both flat fan and hollow cone nozzles are commonly used to enhance pesticide spray characteristics and deposition. The surface coverage and spray distribution are influenced by nozzle spacing and spraying height. Therefore, using a nozzle type, spacing and spraying height that give pesticide spray-overlap is of interest to researchers. This review therefore analyses the effect of nozzle geometry, nozzle spacing and spraying height regimes on pesticide spray droplets characteristics from mechanical boom sprayers. To improve on uniformity of pesticides spray coverage on plant surfaces, a unitary relative span is reported suitable for application, but there had not been clearly defined nozzle type, spacing and height regime for effective spraying. The review further proposes an optimum parameters combination with specific nozzle type, spacing and spraying height for efficient application of pesticides.

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The Influence of the Water Quality on the Droplet Spectrum Produced by Agricultural Nozzles

Cited by 5 publications

References 8 publications

Use of Drones in Crop Protection

Use of Drones in Crop Protection

Application of Non-Parametric Bootstrap Confidence Intervals for Evaluation of the Expected Value of the Droplet Stain Diameter Following the Spraying Process

Assessing Nozzle Geometry, Spacing and Height Effect on Pesticide Spray Characteristics and Swath from Ground and Aerial Sprayers

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