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Precision Agriculture

, Volume 13, Issue 6, pp 611–627 | Cite as

Application of low altitude remote sensing (LARS) platform for monitoring crop growth and weed infestation in a soybean plantation

  • Grianggai Samseemoung
  • Peeyush Soni
  • Hemantha P. W. Jayasuriya
  • Vilas M. Salokhe
Article

Abstract

Crop growth and weed infestation in a soybean field were monitored by processing low altitude remote sensing (LARS) images taken from crane-mounted and unmanned radio controlled helicopter-mounted platforms. Images were taken for comparison between true color (R–G–B) and color-infrared (NIR) digital cameras acquired at different heights above ground. All LARS images were processed to estimate vegetation-indices for distinguishing stages of crop growth and estimating weed density. LARS images from the two platforms (low-dynamic and high-dynamic) were evaluated. It was found that crane-mounted RGBC and NIRC platforms resulted in better quality images at lower altitudes (<10 m). This makes the crane-mounted platform an attractive option in terms of specific low altitude applications at an inexpensive cost. Helicopter-mounted RGBH and NIRH images were found suitable at altitudes >10 m. Comparison of NDVIC and NDVIH images showed that NDVI values at 28 DAG (days after germination) exhibited a strong relationship with altitudes used to capture images (R 2 of 0.75 for NDVIC and 0.79 for NDVIH). However, high altitudes (>10 m) decreased NDVI values for both systems. Higher R 2 values (≥0.7) were also obtained between indices estimated from crane-and helicopter-mounted images with those obtained using an on-ground spectrometer, which showed an adequate suitability of the proposed LARS platform systems for crop growth and weed infestation detection. Further, chlorophyll content was well correlated with the indices from these images with high R 2 values (>0.75) for 7, 14, 21 and 28 DAG.

Keywords

Crop growth monitoring Weed detection Crane-mounted image acquisition Helicopter-mounted image acquisition NDVI 

Notes

Acknowledgments

The authors thank Asian Institute of Technology (AIT), School of Environment, Resources and Development, Agricultural Systems and Engineering, Pathumthani, for providing experimental facilities. This work was financially supported by Rajamangala University of Technology Thanyaburi (RMUTT), Faculty of Engineering, Agricultural Engineering, Klong 6, Thanyaburi, Pathumthani, Thailand.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Grianggai Samseemoung
    • 1
  • Peeyush Soni
    • 2
  • Hemantha P. W. Jayasuriya
    • 3
  • Vilas M. Salokhe
    • 4
  1. 1.Agricultural EngineeringRajamangala University of Technology Thanyaburi (RMUTT)PathumthaniThailand
  2. 2.Agricultural Systems and EngineeringAsian Institute of Technology (AIT)PathumthaniThailand
  3. 3.Department of Soil, Water and Agricultural Engineering, College of Agricultural and Marine SciencesSultan Qaboos UniversityAl-KhodOman
  4. 4.Kaziranga UniversityJorhatIndia

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