Use of a digital camera as alternative method for non-destructive detection of the leaf chlorophyll content and the nitrogen nutrition status in wheat
| Autor: | Jörg Peter Baresel, Pablo Rischbeck, Yuncai Hu, Sebastian Kipp, Gero Barmeier, Bodo Mistele, Urs Schmidhalter |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Canopy business.product_category Biomass chemistry.chemical_element Horticulture 01 natural sciences chemistry.chemical_compound Nondestructive testing Remote sensing Mathematics Digital camera Alternative methods business.industry Forestry 04 agricultural and veterinary sciences Nitrogen Computer Science Applications chemistry Chlorophyll 040103 agronomy & agriculture 0401 agriculture forestry and fisheries business Agronomy and Crop Science Plant nutrition 010606 plant biology & botany |
| Zdroj: | Computers and Electronics in Agriculture. 140:25-33 |
| ISSN: | 0168-1699 |
| Popis: | In this paper, the use of a digital consumer camera for the non-destructive detection of the N nutritional status is compared with two alternative methods, namely SPAD and reflectance spectrometry in three field experiments. The image analysis method consisted of segmentation and successive analysis of the foreground color, i.e. only green plant parts. Thus, also analysis of canopies with small degree of ground cover is possible. All methods gave comparable results, while the effort necessary was considerably higher when using the chlorophyll meter. With spectral measurements, the biomass and leaf nitrogen content could not be clearly differentiated; chlorophyll measurements do not reflect biomass, whereas the described procedure of image analysis permits the consideration both. If used properly, digital image analysis is a valuable tool for the determination of the N nutrition status under field conditions, with low costs and labor requirements. |
| Databáze: | OpenAIRE |
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