Performance of variable-orifice nozzles for liquid fertilizer applications

K-REx Repository

Show simple item record

dc.contributor.author Sharda, Ajay
dc.contributor.author Fulton, J. P.
dc.contributor.author Taylor, R. K.
dc.date.accessioned 2017-03-13T18:33:37Z
dc.date.available 2017-03-13T18:33:37Z
dc.date.issued 2016-05-01
dc.identifier.uri http://hdl.handle.net/2097/35274
dc.description Citation: Sharda, A., Fulton, J. P., & Taylor, R. K. (2016). Performance of variable-orifice nozzles for liquid fertilizer applications. Applied Engineering in Agriculture, 32(3), 347-352. doi:10.13031/aea.32.11428
dc.description.abstract Variable-rate application continues to gain interest among precision agriculture practitioners including the use of crop sensor technology for application of nitrogen in grain crops. For liquid fertilizers, variable-orifice nozzles are being implemented since they provide a much larger nozzle flow range compared to traditional fixed orifice nozzles. However, understanding the performance of variable-orifice nozzles under different field operating conditions has been limited. Therefore, the objective of this study was to evaluate the performance of variable orifice nozzles in support of variable-rate application. Two common variable-orifice nozzles offered by different companies were selected for this study. They were tested over three flow ranges (0.76 to 1.89 L/min) with all tests replicated three times. A commercially available 18.6-m, wet boom sprayer equipped with 37 nozzle bodies was used. Nozzles were numbered but then randomly assigned a position along the boom. To evaluate the performance of an individual nozzle, three random nozzle locations along the spray boom were established for both sets of nozzles. Therefore, 18 tests per replication were required to include the 3 flow rates, 3 different locations, and 2 nozzle types. Once the desired flow rate test was established, tip flow was measured using SpotOn Sprayer Calibrator technology. Tip flows were recorded and statistical analyses performed to evaluate flow uniformity (CV) across the boom but also detect off-rate errors by individual nozzles and locations across the boom. With the exception of a few nozzles, the uniformity across the spray boom, as defined by the CV, was acceptable for both nozzle types over approximately a 2:1 flow range. Both nozzle types were less uniform at the low flow rate. There were three nozzles of each type that resulted in unacceptable flow errors in multiple tests. © 2016 American Society of Agricultural and Biological Engineers.
dc.relation.uri https://doi.org/10.13031/aea.32.11428
dc.rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.uri http://rightsstatements.org/vocab/InC/1.0/
dc.subject Nozzles
dc.subject Precision Agriculture
dc.subject Sprayer
dc.subject Uniformity
dc.subject Variable Rate
dc.subject Agriculture
dc.title Performance of variable-orifice nozzles for liquid fertilizer applications
dc.type Article
dc.date.published 2016
dc.citation.doi 10.13031/aea.32.11428
dc.citation.epage 352
dc.citation.issn 0883-8542
dc.citation.issue 3
dc.citation.jtitle Applied Engineering in Agriculture
dc.citation.spage 347
dc.citation.volume 32
dc.contributor.authoreid asharda
dc.contributor.kstate Sharda, Ajay


Files in this item

This item appears in the following Collection(s)

Show simple item record

This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). Except where otherwise noted, the use of this item is bound by the following: This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

Search K-REx


Advanced Search

Browse

My Account

Statistics








Center for the

Advancement of Digital

Scholarship

cads@k-state.edu