The availability of Soil Organic Nitrogen (SON) determines soil fertility and biomass
production to a great extent. SON also affects the amounts and turnover rates of the soil …

The present review is focused on microbiological methods used in agricultural soils
accustomed to human disturbance. Recent developments in soil biology are analyzed with …

This study demonstrates the compositional heterogeneity of a protein-like fluorescence
emission signal (T-peak; excitation/emission maximum at 280/325nm) of dissolved organic …

The butanol–HCl spectrophotometric assay is widely used for quantifying extractable and
insoluble condensed tannins (CT, syn. proanthocyanidins) in foods, feeds, and foliage of …

The terpenoid and phenolic constituents of conifers have been implicated in protecting trees
from infestation by bark beetles and phytopathogenic fungi, but it has been difficult to prove …

Simple Summary The objective of the experiment was to evaluate the effects of dietary
supplementation of heifers with increasing levels of dried Leucaena leucocephala leaves …

Most of the organic nitrogen in soils and sediments ultimately derives from living organisms
where it is mainly present as peptides and amino acids. These biomolecules are considered …

Tannins are polyphenolic compounds found throughout the plant kingdom and occurring
commonly in woody plants and forest trees. They are functionally defined by their ability to …

As a class of plant polyphenolic compounds contained in some forages (ie, sainfoin
[Onobrychis viciifolia Scop.], big trefoil [Lotus pedunculatus Cav.], birdsfoot trefoil [Lotus …

Two major groups of plant secondary compounds, phenolic compounds and terpenes, may
according to current evidence mediate changes in soil C and N cycling, but their exact role …