Use of proximal sensing and vegetation indexes to detect the inefficient spatial allocation of drip irrigation in a spot area of tomato field crop

Use of proximal sensing and vegetation indexes to detect the inefficient spatial allocation of... Hyperspectral vegetation indexes (VIs) were used to detect stressed crop areas in drip irrigated tomato subjected to waterlogging. The crop was quite uniform throughout the field until the beginning of flowering, as confirmed by spectroradiometric readings and agronomic traits. From 78 days after transplanting (DAT) (42 days before harvest), a spot area of 500 m2 showed increasing excess soil moisture due to topsoil depression, which induced evident waterlogging. Leaves first yellowed (90 DAT) and eventually plants died (100 DAT). The plants surrounding this spot area were affected in their physiological, spectroradiometric and productive responses. Regressions among spectral VIs and crop yield, and photosynthesis (A) and stomatal conductance (gs) were highly significant. The best relationships were found with Soil-Adjusted Vegetation Index, Optimized Soil-Adjusted Vegetation Index, Transformed Soil-Adjusted Vegetation Index, Structure Intensive Pigment Index and Normalized Difference Vegetation Index. Maps of photosynthesis and VIs were roughly similar to the spatial distribution of crop yield. Spectroradiometry was proved efficient as early warning tool for detecting over-irrigation at the field scale. Proximal sensing techniques may contribute to improve (i) irrigation efficiency, with positive effects on tomato crop productivity and water saving, and (ii) the accuracy of remote sensing surveys aimed at estimating tomato crop yield. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Use of proximal sensing and vegetation indexes to detect the inefficient spatial allocation of drip irrigation in a spot area of tomato field crop

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1007/s11119-015-9396-7
Publisher site
See Article on Publisher Site

Abstract

Hyperspectral vegetation indexes (VIs) were used to detect stressed crop areas in drip irrigated tomato subjected to waterlogging. The crop was quite uniform throughout the field until the beginning of flowering, as confirmed by spectroradiometric readings and agronomic traits. From 78 days after transplanting (DAT) (42 days before harvest), a spot area of 500 m2 showed increasing excess soil moisture due to topsoil depression, which induced evident waterlogging. Leaves first yellowed (90 DAT) and eventually plants died (100 DAT). The plants surrounding this spot area were affected in their physiological, spectroradiometric and productive responses. Regressions among spectral VIs and crop yield, and photosynthesis (A) and stomatal conductance (gs) were highly significant. The best relationships were found with Soil-Adjusted Vegetation Index, Optimized Soil-Adjusted Vegetation Index, Transformed Soil-Adjusted Vegetation Index, Structure Intensive Pigment Index and Normalized Difference Vegetation Index. Maps of photosynthesis and VIs were roughly similar to the spatial distribution of crop yield. Spectroradiometry was proved efficient as early warning tool for detecting over-irrigation at the field scale. Proximal sensing techniques may contribute to improve (i) irrigation efficiency, with positive effects on tomato crop productivity and water saving, and (ii) the accuracy of remote sensing surveys aimed at estimating tomato crop yield.

Journal

Precision AgricultureSpringer Journals

Published: Apr 18, 2015

References

  • Precision agriculture and sustainability
    Bongiovanni, R; Lowenberg-Deboer, J
  • Stomatal behavior and water relations of waterlogged tomato plants
    Bradford, KJ; Hsiao, TC
  • Estimating corn leaf chlorophyll concentration from leaf and canopy reflectance
    Daughtry, CST; Walthall, CL; Kim, MS; Brown de Colstoun, E; McMurtrey, JE
  • Differences in the effects of flooding the soil early and late in the photoperiod on the water relations of pot-grown tomato plants
    Dell’Amico, J; Torrecillas, A; Rodríguez, P; Morales, D; Sánchez-Blanco, MJ
  • Use of a green channel in remote sensing of global vegetation from EOS-MODIS
    Gitelson, AA; Kaufman, YJ; Merzlyak, MN
  • Spectral vegetation indices for benchmarking water productivity of irrigated cotton and sugarbeet crops
    González-Dugo, MP; Mateos, L
  • Hyperspectral vegetation indices and novel algorithms for predicting green LAI of crop canopies: Modeling and validation in the context of precision agriculture
    Haboudane, D; Miller, JR; Pattey, E; Zarco-Tejada, PJ; Strachan, IB
  • Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture
    Haboudane, D; Miller, JR; Tremblay, N; Zarco-Tejada, PJ; Dextraze, L

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