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Preparation of a Slow Release Biofertilizer From a Polymeric Urea-Formaldehyde Matrix (PUFM)

Phyton-International Journal of Experimental Botany 2019年第4期88卷 459-470页

作者： laura siverio martínez Mayra González Hurtado laura M.Castro González Jacques Rieumont Briones Ariel martínez García María I.Hernández Díaz Institute of Materials Science and Technology Polymer LaboratoryUniversity of HavanaZapata and GC.P.10400C.Havana CityCuba National Autonomous University of Mexico Department of Physical and Theoretical Chemistry CoyoacanDistrito FederalMX Faculty of Chemistry University of HavanaDepartment of Physical ChemistryZapata and GC.P.10400Havana CityCuba Institute of Horticultural Research Liliana Dimitrova Quivicánkm 33½.Havana CityCuba

Fertilizers industry faces the challenge of improving the efficiency of its products either by optimizing the fertilizers in use or by developing new types of *** the last decade,controlled and slow release technologies have become more *** technologies aim to increase the efficiency of the applied substance by increasing its action over time and avoiding losses of all kinds(leaching,volatilization).The main purpose of the current study was to obtain a slow release biofertilizer by incorporating microalgae into a polymeric urea-formaldehyde matrix(PUFM).The quantitative analysis of macronutrients and micronutrients in the microalgae was determined using different techniques including titration,UV and Atomic Adsorption *** matrix and the formulation obtained(PUFM+CHLO)were also characterized by Infrared Spectroscopy(FTIR)and Scanning Electron Microscopy(SEM).The“in vitro”study showed a typical slow release behavior of nitrogen(N),phosphorus(P)and potassium(K)*** was also shown that(PUFM+CHLO)formulation has the slowest macronutrients release time with a maximum release of 28%,26%y 46%for(N-P-K)macronutrients respectively during a period of 30 ***"in vivo"study exposed the benefits of the biofertilizer formulation(PUFM+CHLO)from conventional commercial fertilizer(CF)(NPK-14-5-12).Due to the presence of nutrients of natural origin in microalgae,(PUFM+CHLO)shows ecological effects which could also developing sustainable agriculture systems.

关键词： Slow-release fertilizer microalgae polymeric matrix nutrients

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