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Abstract (English)

Fungi infections, which may cause variations of plants’ surface tem- perature, can be recognised by infrared cameras in the thermal range (MIR: λ = 8-12 μm) under laboratory conditions. In the field, pro- nounced natural temperature variations of several Kelvin within the crop canopy prevent the recognition of infected plants by commercial thermal vision systems as stand-alone solutions. Near infrared cam- eras ( λ = 0.9-1.7 μm) fitted with band-pass filters show different inten- sity distributions of the reflected radiation. The evaluation of the spec- tral intensity relations improves the differentiation. By NIR several im- portant contents (H 2 O, sugars, acids, etc.) of the surface tissue cells are measured, whereas thermography determines the plant transpiration.

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Agrartechnische Forschung, 11 (2005), 3. ISSN: 0948-7298
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Faculty of Agricultural Sciences
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Institute of Agricultural Engineering

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English

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@article{Hellebrand2005, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/10401}, author = {Hellebrand, Hans Jürgen and Dammer, Karl-Heinz and Beuche, Horst et al.}, title = {Infrared Imaging for Plant Protection}, journal = {Agrartechnische Forschung}, year = {2005}, volume = {11}, number = {3}, }