Monitoring nitrogen status of vegetable crops and soils for optimal nitrogen management
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URI: http://hdl.handle.net/10835/14649
DOI: https://doi.org/10.1016/j.agwat.2020.106356
DOI: https://doi.org/10.1016/j.agwat.2020.106356
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Padilla Ruiz, Francisco Manuel; Farneselli, Michela; Tei, Francesco; Gianquinto, Giorgio; Tei, Francesco; [et al.]Fecha
2020-11-01Resumen
Optimal crop nitrogen (N) management is required to minimize N losses to the environment in vegetable crop production. There are several approaches based on soil and plant monitoring that can assist to improve N management. These include soil monitoring, destructive (tissue N analysis, petiole sap nitrate (NO3−) analysis) and non-destructive (optical sensors) crop-based methods, and portable rapid analysis systems. The most promising optical sensors for guiding N management in vegetable production, considering performance and practicality, are chlorophyll meters and canopy reflectance sensors. The crop-based methods are generally sensitive indicators of crop N status in a wide range of vegetable crops. However, they tend to have reduced sensitivity when N supply is excessive. A notable feature of soil monitoring methods (e.g. the Dutch 1:2 soil-water extract method, soil solution monitoring) is that they can detect excess N supply. The combination of crop and soil monitoring will provi...