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Effects of foliar application of La and Ce on soybean

Grant number: 17/16375-4
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): November 01, 2017
Effective date (End): October 31, 2019
Field of knowledge:Agronomical Sciences - Agronomy
Principal Investigator:Hudson Wallace Pereira de Carvalho
Grantee:Eduardo Santos
Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated research grant:15/05942-0 - Shedding light on the metabolism of nanomaterials absorbed by plants with X-ray and vibrational spectroscopy, AP.JP
Associated scholarship(s):18/26249-9 - Kinetic absorption of Ce nanoparticle by soybean plant, BE.EP.MS


Although not essential for plants the lanthanum and cerium elements, both rare earth element (REE), are used as fertilizers in different crops, manly in China. Studies about this application have demonstrated greater yield in seeds germination, productivity, greater resistance to pathogens and increase in chlorophyll content. According to the consulted literature, the benefic effects promoted for La and Ce are caused by physiologic changes as the net photosynthesis rate, higher absorption of nitrogen and phosphorus. However, to get those gains, it is already known that the application must be done in low concentration, since higher concentrations can induce phytotoxicity. In Brazilian agricultural scenario, the utilization of REE has being done unconscious with application of phosphate fertilizer that present considerable content of REE, though the conscious application it is not explored yet. A way to exploit the benefits that REE can bring would be foliar application. The goals of this study are to develop a mixture of adjuvants that improve the foliar absorption of La and Ce, to evaluate the leaf uptake of these elements and investigate how they affect plant development. For this purpose we have chosen soybean plants as model species Firstly, we will elaborate a formulation taking into a count the drying time and contact angle of applied droplets. As a second step, we will evaluate the absorption of both elements by X-ray fluorescence microanalysis in leaves of plants treated with La and Ce. Finally, in greenhouse conditions the elaborated solution will be applied to soybean plants on V3 phenological stage in sandy soil. During this step, we will perform morphological and physiological analysis until the production of grains. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MONTANHA, GABRIEL S.; RODRIGUES, EDUARDO S.; ROMEU, SARA L. Z.; DE ALMEIDA, EDUARDO; REIS, ANDRE R.; LAVRES JR, JOSE; PEREIRA DE CARVALHO, HUDSON W.. Zinc uptake from ZnSO4 (aq) and Zn-EDTA ((aq)) and its root-to-shoot transport in soybean plants (Glycine max) probed by time-resolved in vivo X-ray spectroscopy. Plant Science, v. 292, . (15/19121-8, 15/05942-0, 17/16375-4)
RODRIGUES, EDUARDO S.; GOMES, MARCOS H. F.; DURAN, NADIA M.; CASSANJI, JOAO G. B.; DA CRUZ, TATIANA N. M.; SANT'ANNA NETO, ANALDER; SAVASSA, SUSILAINE M.; DE ALMEIDA, EDUARDO; CARVALHO, HUDSON W. P.. Laboratory Microprobe X-Ray Fluorescence in Plant Science: Emerging Applications and Case Studies. FRONTIERS IN PLANT SCIENCE, v. 9, . (17/16375-4)
RODRIGUES, EDUARDO S.; MONTANHA, GABRIEL S.; DE ALMEIDA, EDUARDO; FANTUCCI, HUGO; SANTOS, RAFAEL M.; DE CARVALHO, HUDSON W. P.. Effect of nano cerium oxide on soybean (Glycine max L. Merrill) crop exposed to environmentally relevant concentrations. Chemosphere, v. 273, . (15/19121-8, 15/05942-0, 17/16375-4)
ASHRAF, NERMEEN; RODRIGUES, EDUARDO SANTOS; DE ALMEIDA, EDUARDO; MONTANHA, GABRIEL SGARBIERO; ABREU-JUNIOR, CASSIO HAMILTON; VITOVA, MILADA; GARCIA, RAFAEL HENRIQUE LAZZARI; KUPPER, HENDRIK; DE CARVALHO, HUDSON WALLACE PEREIRA. Identification of potential plant species hyperaccumulating light rare earth elements (LREE) in a mining area in Minas Gerais, Brazil. Environmental Science and Pollution Research, v. 29, n. 60, p. 12-pg., . (17/16375-4, 20/11546-8, 20/07721-9)
SANTOS, E.; MONTANHA, G. S.; GOMES, M. H. F.; DURAN, N. M.; CORREA, C. G.; ROMEU, S. L. Z.; PEREIRA, A. E. S.; OLIVEIRA, J. L.; ALMEIDA, E.; PEREZ-DE-LUQUE, A.; et al. Are nanomaterials leading to more efficient agriculture? Outputs from 2009 to 2022 research metadata analysis. ENVIRONMENTAL SCIENCE-NANO, v. 9, n. 10, p. 14-pg., . (20/11178-9, 17/16375-4, 16/50014-6, 17/21004-5, 20/11546-8, 20/07721-9)
MONTANHA, GABRIEL SGARBIERO; RODRIGUES, EDUARDO SANTOS; MARQUES, JOAO PAULO RODRIGUES; DE ALMEIDA, EDUARDO; DOS REIS, ANDRE RODRIGUES; PEREIRA DE CARVALHO, HUDSON WALLACE. X-ray fluorescence spectroscopy (XRF) applied to plant science: challenges towards in vivo analysis of plants. METALLOMICS, v. 12, n. 2, p. 183-192, . (15/05942-0, 17/16375-4, 15/19121-8)
RODRIGUES, EDUARDO S.; MONTANHA, GABRIEL S.; MARQUES, JOAO P. R.; DE ALMEIDA, EDUARDO; YABUKI, LAUREN N. M.; MENEGARIO, AMAURI A.; PEREIRA DE CARVALHO, HUDSON W.. Foliar application of rare earth elements on soybean (Glycine max (L)): Effects on biometrics and characterization of phytotoxicity. JOURNAL OF RARE EARTHS, v. 38, n. 10, p. 1131-1139, . (17/16375-4, 15/05942-0)

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