Advances in Soil Organic Matter Research. The Impact on by W S Wilson

By W S Wilson

The papers during this quantity offer a balanced account of advancements in soil natural topic learn. It makes a speciality of composition and constitution, water caliber, natural subject turnover, humus caliber and fertility, and is key interpreting for all these all in favour of the environmental features of soil conservation and development

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Extra resources for Advances in Soil Organic Matter Research. The Impact on Agriculture and the Environment

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While trends in the saccharides are apparent from both techniques, the plots of saccharides from pyrolysis MS of the Urrbrae particle size fractions are not as linear as those of O-alkyl from NMR. Solid-State Glucose 1 3 C NMR Analysis of the Meadows Soil Incubated with C-labelled 13 The use of C-labelled substrates in conjunction with solid-state C NMR poses a problem not encountered when non-enriched substrates are used. When * C nuclei are located next to each other in organic structures, as is the case in uniformly labelled C substrates, they interact causing solid-state NMR signals to broaden, and spinning side bands to appear.

These data suggest that stream fulvic acids may be the major source of seawater fulvic acids. Thus, amino acid analysis provides another independent method to definitively establish that soil fulvic acids and soil humic acids are different in composition from stream fulvic acids and stream humic acids, respectively. Amino acid analysis is not a new approach in the study of humic substances. Studies describing the amino acid analysis of humic substances have appeared in the literature for decades, but the variation in amino acid content was great due to the inclusion of variable amounts of non-humic components into the humic isolates.

M . , Waters, A . G . and Wilson, M . A . 1987. R. Aust. J. Soil Res. 25,7182. , Vassallo, A . M . , Wilson, M . A . P. 1988. Influence of management on the composition of organic matter in a Red-brown earth as shown by C nuclear magnetic resonance. Aust. J. Soil Res. , Vassallo, A . M . and Wilson, M . A . 1990. Solid-State CP/MAS C NMR analysis of bacterial and fungal cultures isolated from a soil incubated with glucose. Aust. J. Soil Res. 28, 213225. , Vassallo, A . M . and Wilson, M . A . 1989.

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