Evaluation of the effects of airflow distribution patterns on deposit coverage and spray penetration in multi-unit air-assisted sprayer

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dc.contributor.authorLi, Tian
dc.contributor.authorQi, Peng
dc.contributor.authorWang, Zhichong
dc.contributor.authorXu, Shaoqing
dc.contributor.authorHuang, Zhan
dc.contributor.authorHan, Leng
dc.contributor.authorHe, Xiongkui
dc.date.accessioned2024-10-23T12:25:48Z
dc.date.available2024-10-23T12:25:48Z
dc.date.issued2022de
dc.description.abstractEfficient utilization is a pre-requisite for pesticide reduction, and appropriate airflow distribution pattern plays a key role in enhancing the effectiveness of pesticide application by air-assisted orchard sprayers, yet the mechanism of this is unclear. In order to clarify the specific effects of airflow velocity and direction on spraying efficacy, a series of spray tests on pear and cherry and airflow distribution tests in open areas were conducted by a multi-unit air-assisted sprayer on ten different fan settings. Several deposit indicators were analyzed and contrasted with the air distribution. The results showed that an increase in airflow velocity inside the canopy improved the abaxial side deposit coverage of both pear (from 3.33% to 11.80% in the Top canopy and from 6.26% to 11.00% in the Upper canopy) and cherry leaves (from 3.61% to 10.87% in the Top canopy, from 1.36% to 9.04% in the Middle canopy, and from 3.40% to 9.04% in the Bottom canopy), but had no significant effect on the spray penetration. The correlation between deposit indicators and airflow velocities/directions was evaluated, and the results indicated that the enhanced airflow velocities, both in the forward and horizontal direction, improved the abaxial side deposit coverage (CAB) on the outside of pear canopy (p < 0.001), but for cherry, none of the airflow indicators had a significant impact on the CAB independently. On the other hand, the increased airflow direction angle in the cross-row plane for pear, as well as the increased airflow velocities in forward and vertical direction for cherry, both showed negative effects on the adaxial side deposit coverage (p < 0.01). The findings in this study might be helpful to improve the performance of pesticide application in orchards, especially for abaxial side deposition, and could provide a reference for the further investigations about the effect of airflow on spray canopy deposition.en
dc.identifier.swb180183329X
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16801
dc.identifier.urihttps://doi.org/10.3390/agronomy12040944
dc.language.isoengde
dc.rights.licensecc_byde
dc.source2073-4395de
dc.sourceAgronomy; Vol. 12, No. 4 (2022) 944de
dc.subjectAir-assisted sprayer
dc.subjectAirflow distribution pattern
dc.subjectDeposit coverage
dc.subjectSpray penetration
dc.subject.ddc630
dc.titleEvaluation of the effects of airflow distribution patterns on deposit coverage and spray penetration in multi-unit air-assisted sprayeren
dc.type.diniArticle
dcterms.bibliographicCitationAgronomy, 12 (2022), 4, 944. https://doi.org/10.3390/agronomy12040944. ISSN: 2073-4395
dcterms.bibliographicCitation.issn2073-4395
dcterms.bibliographicCitation.issue4
dcterms.bibliographicCitation.journaltitleAgronomy
dcterms.bibliographicCitation.volume12
local.export.bibtex@article{Li2022, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16801}, doi = {10.3390/agronomy12040944}, author = {Li, Tian and Qi, Peng and Wang, Zhichong et al.}, title = {Evaluation of the Effects of Airflow Distribution Patterns on Deposit Coverage and Spray Penetration in Multi-Unit Air-Assisted Sprayer}, journal = {Agronomy}, year = {2022}, volume = {12}, number = {4}, }
local.export.bibtexAuthorLi, Tian and Qi, Peng and Wang, Zhichong et al.
local.export.bibtexKeyLi2022
local.export.bibtexType@article

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