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Romina de Souza
University of Almería
4Publications
2H-index
17Citations
Publications 4
Newest
#1Francisco M. Padilla (UAL: University of Almería)H-Index: 22
#2Romina de Souza (UAL: University of Almería)H-Index: 2
Last.Richard B. Thompson (UAL: University of Almería)H-Index: 25
view all 6 authors...
Optical sensors are a promising approach for assessing nitrogen (N) status of vegetable crops. However, their potential may be undermined if time of day influences measurements. This study evaluated the effects of time of day and N addition on measurements, made with two chlorophyll meters, SPAD-502 and MC-100, and two active canopy reflectance sensors, GreenSeeker handheld and Crop Circle ACS-470. Three treatments (N1, deficient, N2, conventional, and N3, excessive N application) of N concentra...
#1Romina de SouzaH-Index: 2
Last.Francisco M. PadillaH-Index: 22
view all 6 authors...
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 greenho...
#1Francisco M. Padilla (UAL: University of Almería)H-Index: 22
#2Romina de Souza (UAL: University of Almería)H-Index: 2
Last.Richard B. Thompson (UAL: University of Almería)H-Index: 25
view all 6 authors...
Intensive vegetable production is commonly associated with excessive nitrogen (N) fertilization and associated environmental problems. Monitoring of crop N status can enhance crop N management. Chlorophyll meters (CMs) could be used to monitor crop N status because leaf chlorophyll (chl) content is strongly related to crop N status. To monitor crop N status, relationships between CM measurements and leaf chl content require evaluation, particularly when excessive N is supplied. The SPAD-502 mete...
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