High rates of lime and fertilizer-P are characteristically required to obtain high crop yields on
highly weathered acid soils. Much of the agriculture in the southern tropical belt, where acid …

Abstract Organic Acids (OAs) are important components in the rhizosphere soil and
influence Se bioavailability in soil. OAs have a bidirectional contrasting effect on Se …

The adsorption of arsenic onto hydrous ferric oxide (HFO) was examined for both As (III) and
As (V). The effects of adsorbate/adsorbent ratios and of the presence of sulfate and calcium …

The adsorption of phosphate and sulfate on goethite is studied individually and in
combination at solution concentrations of phosphate ranging from 10− 8 to 10− 4 M and of …

The competitive adsorption of phosphate and arsenate on goethite was investigated to
better understand the bonding mechanisms for the two ions. The anions were added both …

With the current interest in reduced use of purchased inputs and efficient use of organic
residues in agroecosystems, there has been renewed interest on the use of organic …

In order to elucidate the influence of humic substances on phosphate adsorption, the
amounts of phosphate adsorbed by synthetic aluminium oxide (Al (OH) 3), ferrihydrite …

Potentiometric titrations of the goethite-water interface were carried out at 25° C in 0.1, 0.3
and 0.7 M NaCl solutions. The acid/base properties of goethite at pH> 4 in a 0.7 M NaCl …

In order to be able to make predictions about the bioavailability and transport of
contaminants and nutrients in soils, detailed knowledge is required about the adsorption of …

Much modern soil chemistry and soil management addresses the balance between
sustainable agricultural practices and protection of the environment. Achieving production …