Ballistic modeling and pattern testing to prevent separation of New Zealand fertilizer products

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dc.citation.issue3
dc.citation.volume31
dc.contributor.authorGrafton MCE
dc.contributor.authorYule IJ
dc.contributor.authorRobertson BG
dc.contributor.authorChok SM
dc.contributor.authorManning MJ
dc.date.available2015-05-01
dc.date.available2015-03-02
dc.date.issued2015-06-18
dc.description.abstractIn recent years twin disc centrifugal spreaders have become larger with some manufacturers claiming to be able to spread fertilizer products as far as 60 m. To achieve wider spread widths, the fertilizer particle exit velocity off the disc has increased, as a result the ballistic qualities of the product becomes more critical. This case study uses data-mined information from Ravensdown Fertiliser Co-op Ltd, a major fertilizer supplier. This article examines and researches products used by arable and grassland farmers and studies the effect of changes in product characteristics on spread bout width from these newer spreaders. Ballistic modeling, based on particle density, size, and shape was used to test the distance fertilizer particles travel at various velocities. Fertilizer particle velocities were measured by high speed photometry using both common fertilizers and common spreaders found in New Zealand. Spreading equipment was pattern tested using the New Zealand Spreadmark method. Ballistic modeling of particles proved appropriate in ideal conditions. Fertilizer manufacturers believe that spreader operators often fail to take account of physical characteristics of products being spread and target the widest bout width possible. This can lead to an in-field Coefficient of Variation (CV) which is much greater than 15% and leads to sub-optimal utilization of fertilizer, where variations in particle size distribution occur. Similar situations have been experienced when spreading fertilizer blends; where blends previously spread successfully, at narrower bout widths now separate. Ballistic models could provide bout width recommendations for products and blends, for a range of applicators and reduce crop striping.
dc.description.publication-statusPublished
dc.format.extent405 - 413 (9)
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000357554000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationAPPLIED ENGINEERING IN AGRICULTURE, 2015, 31 (3), pp. 405 - 413 (9)
dc.identifier.elements-id223841
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0883-8542
dc.languageEnglish
dc.publisherAmerican Society of Agricultural and Biological Engineers
dc.relation.isPartOfAPPLIED ENGINEERING IN AGRICULTURE
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectAgricultural Engineering
dc.subjectAgriculture
dc.subjectBallistic modeling
dc.subjectCentrifugal separation
dc.subjectCoefficient of variation(CV)
dc.subjectFertilizer spreaders
dc.subjectTwin-disk
dc.subjectSEGREGATION
dc.subject.anzsrc0701 Agriculture, Land and Farm Management
dc.subject.anzsrc0999 Other Engineering
dc.titleBallistic modeling and pattern testing to prevent separation of New Zealand fertilizer products
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment/Agritech
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