Effects of grain moisture, drying methods, and variety on breakage susceptibility of shelled corn as measured by the Wisconsin Breakage Tester

dc.contributor.author Dutta, Pradip
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-08-15T06:28:10.000
dc.date.accessioned 2020-07-02T06:05:38Z
dc.date.available 2020-07-02T06:05:38Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1986
dc.date.issued 1986
dc.description.abstract <p>Breakage susceptibility has become an important quality characteristic of corn traded in the international market. Centrifugal impacters like the Wisconsin Breakage Tester may be used for rapid determination of breakage characteristics of different corn lots. However, the high dependence of breakage on moisture content necessitates testing at or correcting to a common moisture level;The objective of this study was to quantify the effects of grain moisture, drying methods, and variety on breakage susceptibility values of shelled corn and also to derive a generalized moisture correction equation to allow use of testers like the Wisconsin Breakage Tester in grain market channels;Breakage susceptibility of 576 samples was measured by a Wisconsin Breakage Tester. Breakage susceptibility increased by 40% (compounded) per percentage point decrease in grain moisture content. Heated air drying at 93.3(DEGREES)C increased breakage susceptibility of corn by 2 to 3 times. Breakage susceptibility of heated air dried corn increased by 0.35 percentage point per percent increase in harvest moisture within the range of 23% to 32%. Harvest moisture did not affect samples slow-dried by room temperature air;Breakage susceptibility of corn dried by heated air was also found to increase by 0.74 percentage point for every percent point decrease in the dry down moisture level from 18% to 12%;If dried by heated air, Pioneer 3780 was the least susceptible to breakage, while Pioneer 3720 was most susceptible to breakage. Varietal difference in breakage susceptibility was not observed if the corn was slow-dried by room air;A generalized moisture adjustment equation was derived for compensating the variation in breakage values resulting from changes in grain moisture;Breakage susceptibility values were not correlated with sample test weight or particle size of ground corn.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/8242/
dc.identifier.articleid 9241
dc.identifier.contextkey 6331069
dc.identifier.doi https://doi.org/10.31274/rtd-180813-6883
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/8242
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/81209
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/8242/r_8703701.pdf|||Sat Jan 15 02:08:38 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Agricultural engineering
dc.title Effects of grain moisture, drying methods, and variety on breakage susceptibility of shelled corn as measured by the Wisconsin Breakage Tester
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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