Hyperspectral measurements of yellow rust and fusarium head blight in cereal crops: Part 1: Laboratory study

dc.contributor.authorWhetton, Rebecca L.
dc.contributor.authorHassall, Kirsty L.
dc.contributor.authorWaine, Toby W.
dc.contributor.authorMouazen, Abdul M.
dc.date.accessioned2018-01-09T13:21:28Z
dc.date.available2018-01-09T13:21:28Z
dc.date.issued2017-12-11
dc.description.abstractThis paper assesses the potential use of a hyperspectral camera for measurement of yellow rust and fusarium head blight in wheat and barley canopy under laboratory conditions. Scanning of crop canopy in trays occurred between anthesis growth stage 60, and hard dough growth stage 87. Visual assessment was made at four levels, namely, at the head, at the flag leaves, at 2nd and 3rd leaves, and at the lower canopy. Partial least squares regression (PLSR) analyses were implemented separately on data captured at four growing stages to establish separate calibration models to predict the percentage coverage of yellow rust and fusarium head blight infection. Results showed that the standard deviation between 500 and 650 nm and the squared difference between 650 and 700 nm wavelengths were found to be significantly different between healthy and infected canopy particularly for yellow rust in both crops, whereas the effect of water-stress was generally found to be unimportant. The PLSR yellow rust models were of good prediction capability for 6 out of 8 growing stages, a very good prediction at early milk stage in wheat and a moderate prediction at the late milk development stage in barley. For fusarium, predictions were very good for seven growing stages and of good performance for anthesis growing stage in wheat, with best performing for the milk development stages. However, the root mean square error of predictions for yellow rust were almost half of those for fusarium, suggesting higher prediction accuracies for yellow rust measurement under laboratory conditions.en_UK
dc.identifier.citationRebecca L. Whetton, Kirsty L. Hassall, Toby W. Waine, Abdul M. Mouazen. Hyperspectral measurements of yellow rust and fusarium head blight in cereal crops: Part 1: Laboratory study. Biosystems Engineering, Volume 166, February 2018, Pages 101-115en_UK
dc.identifier.issn1537-5110
dc.identifier.issnhttps://doi.org/10.1016/j.biosystemseng.2017.11.008
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12867
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectYellow rust (Puccinia striiformis)en_UK
dc.subjectFusarium head blight (Fusarium graminearum)en_UK
dc.subjectWheaten_UK
dc.subjectBarleyen_UK
dc.subjectCrop canopyen_UK
dc.subjectPartial least squares regressionen_UK
dc.titleHyperspectral measurements of yellow rust and fusarium head blight in cereal crops: Part 1: Laboratory studyen_UK
dc.typeArticleen_UK

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