Fecha/hora: 16/06/2024 07:08:25

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	09/08/2019	
Fecha de la última actualización: 	09/08/2019	
Autoria: 	DE SOUZA, R.; PEÑA-FLEITAS, M.T.; THOMPSON, R.B.; GALLARDO, M.; GRASSO, R.; PADILLA, F.M.	
Afiliación: 	ROMINA DE SOUZA, Department of Agronomy, University of Almeria, Spain.; M. TERESA PEÑA-FLEITAS, Department of Agronomy, University of Almeria, Spain.; RODNEY B. THOMPSON, Department of Agronomy, University of Almeria, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Spain.; MARISA GALLARDO, Department of Agronomy, University of Almeria, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Spain.; RAFAEL GILLSON GRASSO RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANCISCO M. PADILLA, Department of Agronomy, University of Almeria, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Spain.	
Título: 	The use of chlorophyll meters to assess crop N status and derivation of sufficiency values for sweet pepper.	
Año de publicación: 	2019	
Fuente/Imprenta: 	Sensors (Basel, Switzerland), 4 July 2019, Volume 19, Issue 13, 2949. OPEN ACCESS.	
ISSN: 	1424-8220	
DOI: 	10.3390/s19132949	
Idioma: 	Inglés	
Notas: 	Article history: Received: 15 May 2019 / Revised: 19 June 2019 / Accepted: 1 July 2019 / Published: 4 July 2019.
(This article belongs to the Special Issue Proximal Sensing for Nitrogen Management).
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).	
Contenido: 	ABSTRACT.
Chlorophyll meters are promising tools for improving the nitrogen (N) management of vegetable crops. To facilitate on-farm use of these meters, sufficiency values that identify deficient and sufficient crop N status are required. This work evaluated the ability of three chlorophyll meters (SPAD-502, atLEAF+, and MC-100) to assess crop N status in sweet pepper. It also determined sufficiency values for optimal N nutrition for each meter for pepper. The experimental work was conducted in a greenhouse, in Almería, Spain, very similar to those used for commercial production, in three different crops grown with fertigation. In each crop, there were five treatments of different N concentration in the nutrient solution, applied in each irrigation, ranging from a very deficient to very excessive N supply. In general, chlorophyll meter measurements were strongly related to crop N status in all phenological stages of the three crops, indicating that these measurements are good indicators of the crop N status of pepper. Sufficiency values determined for each meter for the four major phenological stages were consistent between the three crops. This demonstrated the potential for using these meters with sufficiency values to improve the N management of commercial sweet pepper crops.

© MDPI (Basel, Switzerland)	
Palabras-Clave: 	AtLEAF; CCI; GREENHOUSE; HORTICULTURE; NITROGEN NUTRITION INDEX; PROXIMAL OPTICAL SENSORS; SPAD; VEGETABLE CROPS.	
Categoría del tema: 	F01 Cultivo	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/13072/1/de-Souza-R.-2019.-Sensors-Basel-Switzerland-1913..pdf
https://www.mdpi.com/1424-8220/19/13/2949/pdf	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (101887-1) - INI - AP - DD - PP/SENSORS/2019 -  -  - DIS