Humic acids (HAs) are natural organic polymers that are widely distributed in terrestrial soils,
natural water, and sediments. Due to their excellent physical and chemical properties, HAs …

The positive effect of earthworms on soil processes and plant growth has been extensively
documented. The capacity of earthworms to decompose organic matter has been attributed …

Maintaining food production for a growing world population without compromising natural
resources for future generations represents one of the greatest challenges for agricultural …

Background Plant biostimulants are diverse substances and microorganisms used to
enhance plant growth. The global market for biostimulants is projected to increase 12% per …

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 …

Fertilizer use in modern agriculture is highly inefficient; much of the applied fertilizer is
released into the environment, causing environmental degradation. One way in which …

Humic substances (HS) have been widely recognized as a plant growth promoter mainly by
changes on root architecture and growth dynamics, which result in increased root size …

The breakdown products of plant and animal remains, extracted in an alkaline solution, are
commonly referred to as humic substances (HS). They can be extracted from a wide variety …

Earthworms have a prominent role in supporting soil functioning and thus in providing key
services to humanity. Their beneficial role relates to effects on soil structure, carbon and …

Biodiversity is responsible for the provision of many ecosystem services; human well‐being
is based on these services, and consequently on biodiversity. In soil, earthworms represent …