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Using Optical Sensors to Identify Water Deprivation, Nitrogen Shortage, Weed Presence and Fungal Infection in Wheat

Author

Listed:
  • Gerassimos G. Peteinatos

    () (Institute of Phytomedicine, University Hohenheim, Otto-Sander-Straße 5, Stuttgart 70599, Germany)

  • Audun Korsaeth

    () (Norwegian Institute of Bioeconomy Research (NIBIO), P.O. Box 115, N-1431 Ås, Norway)

  • Therese W. Berge

    () (Norwegian Institute of Bioeconomy Research (NIBIO), P.O. Box 115, N-1431 Ås, Norway)

  • Roland Gerhards

    () (Institute of Phytomedicine, University Hohenheim, Otto-Sander-Straße 5, Stuttgart 70599, Germany)

Abstract

The success of precision agriculture relies largely on our ability to identify how the plants’ growth limiting factors vary in time and space. In the field, several stress factors may occur simultaneously, and it is thus crucial to be able to identify the key limitation, in order to decide upon the correct contra-action, e.g., herbicide application. We performed a pot experiment, in which spring wheat was exposed to water shortage, nitrogen deficiency, weed competition ( Sinapis alba L.) and fungal infection ( Blumeria graminis f. sp. tritici ) in a complete, factorial design. A range of sensor measurements were taken every third day from the two-leaf stage until booting of the wheat (BBCH 12 to 40). Already during the first 10 days after stress induction (DAS), both fluorescence measurements and spectral vegetation indices were able to differentiate between non-stressed and stressed wheat plants exposed to water shortage, weed competition or fungal infection. This meant that water shortage and fungal infection could be detected prior to visible symptoms. Nitrogen shortage was detected on the 11–20 DAS. Differentiation of more than one stress factors with the same index was difficult.

Suggested Citation

  • Gerassimos G. Peteinatos & Audun Korsaeth & Therese W. Berge & Roland Gerhards, 2016. "Using Optical Sensors to Identify Water Deprivation, Nitrogen Shortage, Weed Presence and Fungal Infection in Wheat," Agriculture, MDPI, Open Access Journal, vol. 6(2), pages 1-21, May.
  • Handle: RePEc:gam:jagris:v:6:y:2016:i:2:p:24-:d:70908
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    References listed on IDEAS

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    1. Elke Bauriegel & Werner B. Herppich, 2014. "Hyperspectral and Chlorophyll Fluorescence Imaging for Early Detection of Plant Diseases, with Special Reference to Fusarium spec. Infections on Wheat," Agriculture, MDPI, Open Access Journal, vol. 4(1), pages 1-26, March.
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    Cited by:

    1. repec:gam:jagris:v:7:y:2017:i:9:p:78-:d:112522 is not listed on IDEAS
    2. repec:gam:jagris:v:8:y:2018:i:6:p:79-:d:151374 is not listed on IDEAS

    More about this item

    Keywords

    fluorescence; multi-stress; precision agriculture; site-specific crop management; spectral indices; stress symptoms;

    JEL classification:

    • Q1 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture
    • Q10 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - General
    • Q11 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Aggregate Supply and Demand Analysis; Prices
    • Q12 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets
    • Q13 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Markets and Marketing; Cooperatives; Agribusiness
    • Q14 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Finance
    • Q15 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Land Ownership and Tenure; Land Reform; Land Use; Irrigation; Agriculture and Environment
    • Q16 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - R&D; Agricultural Technology; Biofuels; Agricultural Extension Services
    • Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade
    • Q18 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Policy; Food Policy

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