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Evaluating satellite remote sensing as a method for measuring yield variability in Avocado and Macadamia tree crops

Published online by Cambridge University Press:  01 June 2017

A. Robson*
Affiliation:
Precision Agriculture Research Group, University of New England, Armidale, NSW 2351, Australia
M. M. Rahman
Affiliation:
Precision Agriculture Research Group, University of New England, Armidale, NSW 2351, Australia
J. Muir
Affiliation:
Precision Agriculture Research Group, University of New England, Armidale, NSW 2351, Australia
A. Saint
Affiliation:
Precision Agriculture Research Group, University of New England, Armidale, NSW 2351, Australia
C. Simpson
Affiliation:
Simpson Farms, Childers Qld 4660Australia
C. Searle
Affiliation:
Suncoast gold macadamia, Gympie, Qld 4570Australia
*
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Abstract

This paper evaluates the potential of very high resolution multispectral (Worldview-3) satellite imagery for mapping yield parameters in avocado and macadamia orchards. An evaluation of 18 structural and pigment based vegetation indices (VIs) derived from Worldview-3 imagery identified a positive relationship to nut/ fruit weight (kg/tree) R2>0.69 for macadamia and R2>0.68 for avocado; and nut/ fruit number (per tree) R2>0.6 for macadamia and R2>0.61 for avocado. Using the algorithms derived between the optimal VI and the measured parameter, yield and nut/ fruit number maps were derived for each block. In the absence of a commercial yield monitor, the resulting yield maps offer significant benefit to growers for improving orchard management, harvest scheduling, and forward selling decisions.

Type
Precision Horticulture and Viticulture
Copyright
© The Animal Consortium 2017 

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