Comparison of optical indicators for potato crop nitrogen status assessment including novel approaches based on leaf fluorescence and flavonoid content
- Ben Abdallah, F. , Philippe, W. & Goffart, J.-. (2018). Comparison of optical indicators for potato crop nitrogen status assessment including novel approaches based on leaf fluorescence and flavonoid content. Journal of Plant Nutrition, Volume 41: ( Issue 20),
| Type | Journal Article |
| Year | 2018 |
| Title | Comparison of optical indicators for potato crop nitrogen status assessment including novel approaches based on leaf fluorescence and flavonoid content |
| Journal | Journal of Plant Nutrition |
| Volume | Volume 41 |
| Issue | Issue 20 |
| Project/Service ref | PotFluo |
| Endnote Keywords | leaf flavonoid content, leaf chlorophyll content, nitrogen, potato, optical sensors |
| Abstract | Some phenolic compounds are proposed as good indicators of crop nitrogen status (CNS). This research compared the use of leaf flavonoid content (LFC) as a potential indicator for evaluating potato CNS with other recognized indicators linked to leaf chlorophyll content (LCC). Three-year trials were conducted in Belgium on two potato cultivars including increasing nitrogen rates. Optical sensors (Dualex, Multiplex, Hydro N-tester, Cropscan) were used to evaluate LFC and/or LCC. Plant tissue samples were analyzed to calculate the biomass nitrogen concentration and the nitrogen nutrition index. The indicators were evaluated based on four criteria: the sensitivity, the earliness of the diagnosis, the accuracy, and the specificity. Apart from the low specificity to nitrogen, which can be improved by the use of a within-field reference plot, the LFC (combined with LCC or individually) matched the required criteria and could be suggested as a valuable indicator for assessing potato CNS. |
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| Authors | Ben Abdallah, F., Philippe, W., Goffart, J.-. |
