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Can NDVI index being use for yield prediction in Solanum tuberosum L. plants biofortified with calcium?
Ana Rita F. Coelho
* 1, 2 ,
Diana Daccak
1, 2 ,
Inês Carmo Luís
1, 2 ,
Ana Coelho Marques
1, 2 ,
Cláudia Campos Pessoa
1, 2 ,
Maria Brito
1, 2 ,
José Kullberg
1, 2 ,
Manuela Simões
1, 2 ,
Maria Manuela Silva
2, 3 ,
Maria F. Pessoa
1, 2 ,
Fernando H. Reboredo
1, 2 ,
Paulo Legoinha
1, 2 ,
José C. Ramalho
2, 4 ,
Paula S. Campos
2, 5 ,
Isabel P. Pais
2, 5 ,
José N. Semedo
2, 5 ,
Fernando C. Lidon
1, 2
1  Earth Sciences Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa. Campus da Caparica, 2829-516 Caparica, Portugal
2  GeoBioTec Research Center, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa. Campus da Caparica, 2829-516 Caparica, Portugal
3  Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa. Campus da Caparica, 2829-516 Caparica, Portugal
4  PlantStress & Biodiversity Lab, Centro de Estudos Florestais (CEF), Instituto Superior Agronomia (ISA), Universidade de Lisboa (ULisboa), Quinta do Marquês, Av. República, 2784-505 Oeiras and Tapada da Ajuda, 1349-017 Lisboa, Portugal.
5  INIAV, Instituto Nacional de Investigação Agrária e Veterinária, Oeiras, Portugal
Academic Editor: Mario Cunha
Published: 01 November 2023 by MDPI in The 3rd International Electronic Conference on Agronomy session Digital farming for the evolution of agriculture and agricultural engineering
https://doi.org/10.3390/IECAG2023-15757
Abstract:

Remote sensing technology (namely, through UAVs) has been used to monitor potato crops. As such, this study aims to analysis the relationship between the NDVI index model and yield productivity in Solanum tuberosum L. plants from Agria variety submitted to Ca biofortification process with two different concentrations (12 and 24 kg/ha) of CaCl2 or Ca-EDTA. The NDVI values were collected six days after the six foliar application and compared to Ca increase in potato tubers (at harvest) and total yield. The results highlight the fact that 24 kg/ha CaCl2 presented the lowest NDVI index, however, did not show the lowest yield. Moreover, that same treatment presented the highest Ca biofortification index in tubers. Also, seems that NDVI index can be used in decision-making and improve crop management strategies considering being an indicator to detect plant growth or vigor, however in this research, it’s not sufficient for yield prediction.

Keywords: calcium biofortification; NDVI; smart farming; Solanum tuberosum L.; yield
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