Humic substances (HS) are dominant components of soil organic matter and are recognized
as natural, effective growth promoters to be used in sustainable agriculture. In recent years …

Singlet oxygen (1O2) is a reactive oxygen species produced in sunlit waters via energy
transfer from the triplet states of natural sensitizers. There has been an increasing interest in …

Background Soil organic matter (SOM) supports multiple soil ecosystem functions,
underpinned by processes such as C sequestration, N mineralization, aggregation …

The biogeochemical cycling of soil organic matter (SOM) plays a central role in regulating
soil health, water quality, carbon storage, and greenhouse gas emissions. Thus, many …

Enhancing soil organic matter in agricultural soils has potential to contribute to climate
mitigation while also promoting soil health and resilience. However, soil carbon (C) …

Improvement of plant iron nutrition as a consequence of metal complexation by humic
substances (HS) extracted from different sources has been widely reported. The presence of …

Dietary deficiency of selenium is a global health threat related to low selenium
concentrations in crops. Despite the chemical similarity of selenium to the two more …

The term humic substances (HS) refers to a group of heterogeneous, dark-colored
polydisperse substances found in soils, peats, natural waters, and sediments. It is …

Owing to the development of urbanization, the amount of sewage sludge generated through
biological activated sludge process has increased dramatically. Anaerobic fermentation of …

The state of the art of the reported data on interactions between microorganisms and HSs is
presented herein. The properties of HSs are discussed in terms of microbial utilization …