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Characterization of humified compounds by extraction and fractionation on solid polyvinylpyrrolidone
Abstract New humification parameters are proposed for characterizing soils and organic fertilizers or amendments. They include an index, a degree and a rate of humification, all devised to assess theExpand
Biostimulant activity of two protein hydrolyzates in the growth and nitrogen metabolism of maize seedlings.
Two protein hydrolyzate–based fertilizers, one from alfalfa and one from meat flour, were studied chemically and biologically and a role of amino acids and small peptides of the two PHFs is suggested in the regulation of the hormone-like activity and nitrogen pathway. Expand
Replant problems in South Tyrol: role of fungal pathogens and microbial population in conventional and organic apple orchards
There was a high level of organic matter in both the organic and the conventional apple orchards with no appreciable differences in humic fractions and most of the root-colonising pathogens belonged to the well-known root rot complex, Rhizoctonia solani and Pythium spp. Expand
Determination of organic carbon in aqueous extracts of soils and fertilizers
Abstract A simple and accurate method for the routine determination of organic carbon in aqueous extracts of soils and fertilizers is described. Samples are oxidized for exactly 10 minutes with aExpand
Evaluation of heavy metals during stabilization of organic matter in compost produced with municipal solid wastes
The total content of six heavy metals (Cu, Zn, Pb, Cr, Ni and Cd), the Cd/Zn ratio and the zinc equivalent were determined for composts produced from municipal solid waste (MSW) both with and withoutExpand
Compost-based growing media: influence on growth and nutrient use of bedding plants.
The agronomic performance and the mineral composition and trace element content in Begonia semperflorens "Bellavista F1", Mimulus "Magic x hybridus", Salvia splendens "maestro", and Tagete patulaExpand
Use of insoluble polyvinylpyrrolidone and isoelectric focusing in the study of humic substances in soils and organic wastes
Abstract The use of insoluble polyvinylpyrrolidone and isoelectric focusing in the study of humic substances is reviewed. Chromatography on insoluble polyvinylpyrrolidone is widely used toExpand
The evaluation of stability during the composting of different starting materials: comparison of chemical and biological parameters.
The comparison of the first order (exponential) and logistic (sigmoidal) models applied to the THE AUTHORS' and OM course highlights the role of mineral nitrogen as limiting factor during composting of the more stabilized sludge. Expand
Chemical and microbiological soil quality indicators and their potential to differentiate fertilization regimes in temperate agroecosystems
Abstract The study examined the interrelationships between chemical and microbiological quality indicators of soil and their ability to differentiate plots under contrasting fertilization regimes.Expand
Infrared, Raman, and Nuclear Magnetic Resonance (1H, 13C, and 31P) Spectroscopy in the Study of Fractions of Peat Humic Acids
Fourier transform infrared spectroscopy (FT-IR), surface-enhanced Raman spectroscopy (SERS), and nuclear magnetic resonance (NMR) (1H, 13C, and 31P) have been applied to the study of fractions ofExpand