Data/hora: 07/06/2024 15:37:48

Biblioteca(s): | Epagri-Sede.
Data corrente: | 10/11/2020
Data da última atualização: | 10/11/2020
Autoria: | GIROTO, A. S.; VALLE, S. F.; GUIMARAES, G. G. F.; MOLINA, A.; REIS, H. P. G.; FERNANDES, D. M.; BERNARDI, A. C. C.; MATTOSO, L. H. C.; RIBEIRO, C.
Título: | Tailoring Efficient Materials for NPK All-in-One Granular Fertilization.
Ano de publicação: | 2020
Fonte/Imprenta: | Industrial & Engineering Chemistry Research, Washington, DC, v. 59, p. 18387-18395, 2020.
Idioma: | Inglês
Conteúdo: | Food security is one of the biggest challenges for the next few decades, especially with the accelerated population growth rates. Therefore, achieving a better nutrient use e&#64259;ciency is crucial to enhance crop yields and productivity, which depend directly on how macronutrients are supplied. It is notably complex because fertilizers are often applied as granules instead of more soluble powdered forms. Here, we propose a new model for an allin-one NPK fertilizer production, which allows quickly adjustable compositions in multi-nutrient granules. Thus, thermoplastic starch has been used as a biodegradable matrix binder mixed with the fertilizers in a continuous process by extrusion. Urea and KCl were considered as N and K sources, respectively. P sources with di&#64256;erent solubilities (triple superphosphate (TSP) and Bayovar and Patos phosphate rocks) have been tested and compared. The greenhouse experiment revealed that the TSP composite promoted superior biomass production than the standard application, in addition to an overall better nutrient uptake. While Bayovar did not bene&#64257;t from the all-in-one granule, Patos results were improved in this system, revealing a boost in its solubilization.
Palavras-Chave: | Composites; Controlled-Release; greenhouse experiments; NPK fertilizer.
Categoria do assunto: | W Química e Física
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_47351.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
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