
Controlled‐release fertilizer based on poly(butylene succinate)/urea/clay and its effect on lettuce growth
2018; Wiley; Volume: 135; Issue: 47 Linguagem: Inglês
10.1002/app.46858
ISSN1097-4628
AutoresV. A. R. Baldanza, Fernando Gomes de Souza, Sérgio Thode Filho, Heider Alves Franco, Geiza E. Oliveira, R. M. J. Caetano, José Ramón, Selma Gomes Ferreira Leite, Ana Maria Furtado de Sousa, Adriele Laurinda Silva,
Tópico(s)Hydrogels: synthesis, properties, applications
ResumoABSTRACT Controlled‐release fertilizer is one of the most critical tools in agribusiness for decreasing environmental impacts. Thus, the development of bio‐based systems able to induce the slow release of fertilizers has become the focus of numerous researchers. In this sense, this work presents a slow‐release fertilizer prepared by melt mixing of poly(butylene succinate) filled with 30 wt % urea and 5 wt % montmorillonite clay. The obtained materials were characterized using FTIR, XRD, and SAXS. Also, the release of urea was investigated using gravimetric and spectrophotometric tests. Finally, a vegetable growth analysis was performed to evaluate the development of lettuce ( Lactuca sativa L .). The best composite material can increase the diameter of the lettuce by 67%, whereas the conventional use of urea increased this diameter by 48%. Therefore, the presented materials are useful as fertilizer systems.
Referência(s)