Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops
To increase nitrogen (N) use efficiency and reduce water pollution from vegetable production, it is necessary to optimize N management. Fluorescence-based optical sensors are devices that can improve N fertilization through non-destructive field monitoring of crop variables. The aim of this work was...
| Hlavní autoři: | , , , , , |
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| Médium: | info:eu-repo/semantics/article |
| Jazyk: | English |
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2024
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| On-line přístup: | http://hdl.handle.net/10835/14936 https://doi.org/10.1007/s11119-021-09837-4 |
| _version_ | 1789406318199570432 |
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| author | De Souza Ibarra, Stefani Romina Peña-Fleitas, María Teresa Thompson, Rodney Gallardo Pino, Luisa Grasso, Rafael Padilla Ruiz, Francisco Manuel |
| author_facet | De Souza Ibarra, Stefani Romina Peña-Fleitas, María Teresa Thompson, Rodney Gallardo Pino, Luisa Grasso, Rafael Padilla Ruiz, Francisco Manuel |
| author_sort | De Souza Ibarra, Stefani Romina |
| collection | DSpace |
| description | To increase nitrogen (N) use efficiency and reduce water pollution from vegetable production, it is necessary to optimize N management. Fluorescence-based optical sensors are devices that can improve N fertilization through non-destructive field monitoring of crop variables. The aim of this work was to compare the performance of five fluorescence indices (SFR-R, SFR-G, FLAV, NBI-R, and NBI-G) to predict crop variables, as dry matter production, crop N content, crop N uptake, Nitrogen Nutrition Index (NNI), absolute and relative yield, in sweet pepper (Capsicum annuum) crops grown in greenhouse. Fluorescence measurements were periodically made with the Multiplex® 3.6 sensor throughout three cropping cycles subjected to five N application treatments. The performance of fluorescence indices to predict crop variables considered calibration and validation analyses. In general, the five fluorescence indices were strongly related with NNI, crop N content and relative yield. The best performing indices to predict crop N content and NNI at the early stages of the crops (i.e., vegetative and flowering phenological stages) were the SFR indices, both under red (SFR-R) and green (SFR-G) excitation. However, in the final stage of the crop (i.e., harvest stage), the best performing indices were NBI, both under red (NBI-R) and green (NBI-G) excitation, and FLAV. The two SFR indices best predicted relative yield of sweet pepper at early growth stages. Overall, the fluorescence sensor and the fluorescence indices evaluated were able to predict crop variables related to N status in sweet pepper. They have the capacity to be incorporated into best N management practices. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-14936 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2024 |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-149362024-01-08T09:20:54Z Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops De Souza Ibarra, Stefani Romina Peña-Fleitas, María Teresa Thompson, Rodney Gallardo Pino, Luisa Grasso, Rafael Padilla Ruiz, Francisco Manuel Capsicum annuum Flavonols meter Fluorimeter Nitrogen Nutrition Index Vegetable crops Yield To increase nitrogen (N) use efficiency and reduce water pollution from vegetable production, it is necessary to optimize N management. Fluorescence-based optical sensors are devices that can improve N fertilization through non-destructive field monitoring of crop variables. The aim of this work was to compare the performance of five fluorescence indices (SFR-R, SFR-G, FLAV, NBI-R, and NBI-G) to predict crop variables, as dry matter production, crop N content, crop N uptake, Nitrogen Nutrition Index (NNI), absolute and relative yield, in sweet pepper (Capsicum annuum) crops grown in greenhouse. Fluorescence measurements were periodically made with the Multiplex® 3.6 sensor throughout three cropping cycles subjected to five N application treatments. The performance of fluorescence indices to predict crop variables considered calibration and validation analyses. In general, the five fluorescence indices were strongly related with NNI, crop N content and relative yield. The best performing indices to predict crop N content and NNI at the early stages of the crops (i.e., vegetative and flowering phenological stages) were the SFR indices, both under red (SFR-R) and green (SFR-G) excitation. However, in the final stage of the crop (i.e., harvest stage), the best performing indices were NBI, both under red (NBI-R) and green (NBI-G) excitation, and FLAV. The two SFR indices best predicted relative yield of sweet pepper at early growth stages. Overall, the fluorescence sensor and the fluorescence indices evaluated were able to predict crop variables related to N status in sweet pepper. They have the capacity to be incorporated into best N management practices. 2024-01-08T09:20:53Z 2024-01-08T09:20:53Z 2021-09-09 info:eu-repo/semantics/article de Souza, R., Peña-Fleitas, M.T., Thompson, R.B., Gallardo, M., Grasso, R., Padilla, F.M. 2022. Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops. Precision Agriculture 23(1): 278-299. http://hdl.handle.net/10835/14936 https://doi.org/10.1007/s11119-021-09837-4 en https://link.springer.com/article/10.1007/s11119-021-09837-4 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Precision Agriculture 23(1): 278-299. |
| spellingShingle | Capsicum annuum Flavonols meter Fluorimeter Nitrogen Nutrition Index Vegetable crops Yield De Souza Ibarra, Stefani Romina Peña-Fleitas, María Teresa Thompson, Rodney Gallardo Pino, Luisa Grasso, Rafael Padilla Ruiz, Francisco Manuel Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title | Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title_full | Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title_fullStr | Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title_full_unstemmed | Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title_short | Use of fluorescence indices as predictors of crop N status and yield for greenhouse sweet pepper crops |
| title_sort | use of fluorescence indices as predictors of crop n status and yield for greenhouse sweet pepper crops |
| topic | Capsicum annuum Flavonols meter Fluorimeter Nitrogen Nutrition Index Vegetable crops Yield |
| url | http://hdl.handle.net/10835/14936 https://doi.org/10.1007/s11119-021-09837-4 |
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