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ligandaarde

Ligandaarde is a term used in Dutch soil chemistry and geochemistry to describe soils in which nutrient dynamics are strongly governed by organic ligands that bind metal ions. The term is not universally standardized and may appear mainly in academic publications, rather than in common soil classifications.

The word combines ligan(d) from ligand, a chemical species that binds to a central metal, with aarde,

In ligandaarde, metal ions such as iron, manganese, zinc, and copper form complexes with ligands, which can

Understanding ligandaarde has implications for agriculture and environmental remediation. It affects fertilizer efficiency, micronutrient uptake, and

Related concepts include ligand chemistry, chelation, soil organic matter, and root exudates.

meaning
soil
or
earth.
In
this
context,
ligands
include
natural
organic
matter
such
as
humic
and
fulvic
acids,
as
well
as
plant
root
exudates
that
form
complexes
with
metal
ions.
alter
their
solubility
and
availability
to
plants.
Complexation
can
increase
mobility
of
some
metals
in
certain
conditions
or
protect
others
from
precipitation,
depending
on
pH,
ionic
strength,
and
the
type
and
concentration
of
ligands.
the
fate
of
contaminants
through
chelation
and
immobilization.
Researchers
study
this
phenomenon
using
extraction
methods,
spectroscopic
analysis,
and
modeling
of
soil–solution
equilibria.