Sugarcane yield monitoring: a protocol for yield map interpolation and key considerations in the collection of yield data

Paper

Bramley, R. G. V. and Jensen, T. A.. 2013. "Sugarcane yield monitoring: a protocol for yield map interpolation and key considerations in the collection of yield data." Bruce, R. C. (ed.) 35th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2013). Townsville, Australia 16 - 18 Apr 2013 Mackay, Australia.
Paper/Presentation Title

Sugarcane yield monitoring: a protocol for yield map interpolation and key considerations in the collection of yield data

Presentation TypePaper
AuthorsBramley, R. G. V. (Author) and Jensen, T. A. (Author)
EditorsBruce, R. C.
Journal or Proceedings TitleProceedings of the 35th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2013)
ERA Conference ID50305
Journal Citation35, pp. 28-39
Number of Pages12
Year2013
Place of PublicationMackay, Australia
ISBN9781629939155
Web Address (URL) of Paperhttp://www.assct.com.au/media/pdfs/Ag%2010%20Bramley.pdf
Conference/Event35th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2013)
Australian Society of Sugar Cane Technologists Conference
Event Details
35th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2013)
Event Date
16 to end of 18 Apr 2013
Event Location
Townsville, Australia
Event Details
Australian Society of Sugar Cane Technologists Conference
ASSCT
Abstract

Yield monitoring is a key element of Precision Agriculture (PA) given the importance of yield maps to the process of 'management zone' delineation and decisions around the targeting of inputs such as fertilisers. This paper presents a protocol for the interpolation of yield maps from yield monitor data and considers some critical issues in the data acquisition process relating to the calibration of the yield monitor to tonnages recorded at the mill. These strongly suggest that successful adoption of yield monitoring and mapping in the sugar industry, and thus of PA more broadly, will depend on significant improvements being made to the consignment system; electronic consignment presents as one possible solution to yield monitor calibration errors. In addition, yield mapping requires: geolocation with an accuracy of dGPS or better; yield monitor calibration on a per-harvest event basis, logging of yield data at 3 second intervals, or where more frequent logging is used, data thinning to an equivalent of 3 second logging; removal of errors and aberrant values from the yield monitor data based on harvester speeds of < 0.75 m/s and zero yields followed by cleaning of values that are more than three standard deviations from the mean yield; and map interpolation using local block kriging onto a 2 m grid, using exponential variograms, blocks of 10 m and a data cloud of 100 points.

Keywordsconsignment; kriging; precision agriculture
ANZSRC Field of Research 2020300407. Crop and pasture nutrition
300206. Agricultural spatial analysis and modelling
300205. Agricultural production systems simulation
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Byline AffiliationsCommonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
National Centre for Engineering in Agriculture
Institution of OriginUniversity of Southern Queensland
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