Supraparticles as slow-release fertiliser in seedling potential growth of Eucalyptus urograndis and greenhouse gas fux impacts.

Slow-release urea fertilisers have been shown to present acceptable values for plant yield and mitigate the harmful efect of soil emission gases. This study synthesises a slow-release fertiliser containing fumed-nanosilica, nanofbrillated cellulose as well as sodium alginate as a urea carrier to analyse the growth parameters of Eucalyptus urograndis seedlings and potential emission of soil gases, N2O, CH4, CO2 and ammonia volatilisation. The developed supraparticles, arranged layered nanopar- ticle structure, presented a decrease in the normal nitrogen content of urea of 19%, which is attributed to the binding of this element. A good electrostatic interaction between the elements was confrmed by the FTIR with 20% of nitrogen content from its chemical composition and an increase in thermal degradation of the main components when synthesised. The profle of urea release presented to be as frst-order with 85% of this compound was released only after 60 days. These characteristics led to statistically increased growth of Eucalyptus seedlings compared to the controls, which improves with higher dosages of urea. Values of biomass and characteristics of the plant were used for principal component analysis which resulted in good cluster formation based on the upward concentration of urea added to the plant. Nevertheless, fux gases were statistically higher for certain time periods on lower urea particle concentration, while increased concentration presented N2O emissions within standard rates with no signifcant variation in the other measured gases, which was attributed to the soil microbial targeted consumption. Therefore, this material can be benefcial in the agriculture industry.

Bibliographic Details

Main Authors:	LIMA, G. G. de, MATOS, M., SÁ, F. P. de, MASHIBA, L. N., MAGALHAES, W. L. E., RACHWAL, M. F. G., ZANATTA, J. A.
Other Authors:	GABRIEL GOETTEN DE LIMA, UNIVERSIDADE FEDERAL DO PARANÁ; MAILSON MATOS, UNIVERSIDADE FEDERAL DO PARANÁ; FRANCIELEN PAOLA DE SÁ, BOLSISTA DA EMBRAPA FLORESTAS; LEANDRO NOZOMI MASHIBA, BOLSISTA DA EMBRAPA FLORESTAS; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; MARCOS FERNANDO GLUCK RACHWAL, CNPF; JOSILEIA ACORDI ZANATTA, CNPF.
Format:	Folhetos biblioteca
Language:	Ingles English
Published:	2023-03-22
Subjects:	Urea carrier sodium alginate, Emission factor, Nanocellulose biofertiliser, Slow-release fertiliser, Supraparticles,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1152603 https://doi.org/10.1007/s11356-022-23845-5
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