UAV-based imaging platform for monitoring maize growth throughout development

Plant Direct
S. B. TiradoNathan M Springer

Abstract

Plant height (PH) data collected at high temporal resolutions can give insight into how genotype and environmental variation influence plant growth. However, in order to increase the temporal resolution of PH data collection, more robust, rapid, and low-cost methods are needed to evaluate field plots than those currently available. Due to their low cost and high functionality, unmanned aerial vehicles (UAVs) provide an efficient means for collecting height at various stages throughout development. We have developed a procedure for utilizing structure from motion algorithms to collect PH from RGB drone imagery and have used this platform to characterize a yield trial consisting of 24 maize hybrids planted in replicate under two dates and three planting densities. PH data was collected using both weekly UAV flights and manual measurements. The comparisons of UAV-based and manually acquired PH measurements revealed sources of error in measuring PH and were used to develop a robust pipeline for generating UAV-based PH estimates. This pipeline was utilized to document differences in the rate of growth between genotypes and planting dates. Our results also demonstrate that growth rates generated by PH measurements collected at multip...Continue Reading

References

Oct 22, 2013·Trends in Plant Science·José Luis Araus, Jill E Cairns
Apr 2, 2017·Genetics·Alencar XavierKaty M Rainey
Jan 18, 2018·PloS One·Zhi LiCandice N Hirsch
Sep 10, 2019·Plant Methods·Stefan Paulus

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Citations

Feb 13, 2021·Plant Phenomics : a Science Partner Journal·Monica Herrero-HuertaKaty M Rainey

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Methods Mentioned

BETA
feature extraction

Software Mentioned

Photoscan
Agisoft
MATLAB
Agisoft Photoscan
Agisoft Photoscan Professional
R stats package R
QGIS

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