Cybermedlife - Therapeutic Actions Biodynamic Farming

Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture.

Abstract Title: Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture. Abstract Source: Environ Sci Pollut Res Int. 2012 Nov ;19(9):4214-25. Epub 2012 Jun 17. PMID: 22707205 Abstract Author(s): R Spaccini, P Mazzei, A Squartini, M Giannattasio, A Piccolo Article Affiliation: Dipartimento di Scienze del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali (DiSSPAPA), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy. This email address is being protected from spambots. You need JavaScript enabled to view it. Abstract: Manure products fermented underground in cow horns and commonly used as field spray (preparation 500) in the biodynamic farming system, were characterized for molecular composition by solid-state nuclear magnetic resonance [(13) C cross-polarization magic-angle-spinning NMR ((13) C-CPMAS-NMR)] spectroscopy and offline tetramethylammonium hydroxide thermochemolysis gas chromatography-mass spectrometry. Both thermochemolysis and NMR spectroscopy revealed a complex molecular structure, with lignin aromatic derivatives, polysaccharides, and alkyl compounds as the predominant components. CPMAS-NMR spectra of biodynamic preparations showed a carbon distribution with an overall low hydrophobic character and significant contribution of lignocellulosic derivatives. The results of thermochemolysis confirmed the characteristic highlighted by NMR spectroscopy, revealing a molecular composition based on alkyl components of plant and microbial origin and the stable incorporation of lignin derivatives. The presence of biolabile components and of undecomposed lignin compounds in the preparation 500 should be accounted to its particularly slow maturation process, as compared to common composting procedures. Our results provide, for the first time, a scientific characterization of an essential product in biodynamic agriculture, and show that biodynamic products appear to be enriched of biolabile components and, therefore, potentially conducive to plant growth stimulation. Article Published Date : Oct 31, 2012
Therapeutic Actions Biodynamic Farming

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Effects of different management regimes on microbial biodiversity in vineyard soils.

Related Articles Effects of different management regimes on microbial biodiversity in vineyard soils. Sci Rep. 2018 Jun 20;8(1):9393 Authors: Hendgen M, Hoppe B, Döring J, Friedel M, Kauer R, Frisch M, Dahl A, Kellner H Abstract An active and diverse soil biota is important for maintaining crop productivity and quality, and preservation of these traits is a major goal of sustainable farming. This study aimed at unravelling the impact of different management practices on soil fungal and bacterial biodiversity in vineyards as a model for permanent crops. Species diversity was assessed using an amplicon sequencing approach in a long-term field experiment in the Rheingau wine region of Germany where integrated, organic and biodynamic management practices had been in place for 10 years. Fungal community composition under integrated management differed significantly from organic and biodynamic management, whereas fungal species richness remained unaffected. Soil under integrated management had a significantly reduced bacterial species richness compared to organic, but community composition was similar to organically and biodynamically managed soils. Highest fungal richness was obtained under cover crop between rows in topsoil, arising from cover cropping and organic carbon supply. PMID: 29925862 [PubMed - in process]