Clay minerals can fix high amounts of ammonium in non-exchangeable form, which can be of management importance when some ammonium applied with fertilisers is sequestered and not available to the crop. Non-exchangeable ammonium can be released slowly and increase soil N availability. The percentage of ammonium fixed depends, among other factors, on the ammonium dose applied. We applied increasing amounts of ammonium to three soils and then measured (after 48h) the soil equilibrium concentration of non-exchangeable, exchangeable, and soluble ammonium. At a 70mg NH4-Nkg-1 dose, non-exchangeable ammonium measured 60, 24, and 17% on the three soils, while at 2800mg NH4-Nkg-1 the fixation percentage decreased non-linearly to 12, 4, and 5%. Ammoni...
The ammonium fixing capacity of Finnish soils was studied by analysing a material of 139 samples fro...
Soil cation exchange capacity (CEC) measures the capability of soils to hold and release nutrients. ...
Understanding the factors influencing water and nutrient transport through soil profile is important...
Clay minerals can fix high amounts of ammonium in non-exchangeable form, which can be of management ...
Clay minerals can fix high amounts of ammonium in non-exchangeable form, which can be of management ...
Many soils in the Midwestern USA can retain ammonium (NH$\sb4\sp+$) and potassium (K$\sp+$) in nonex...
Natural zeolites are more and more frequently employed to remove excess ammonium in wastewater, sin...
The issue of exchange processes, retention and leaching of ions in soil is far from being completely...
Ammonium production is the key process for N nutrition of lowland rice because the mineralization pr...
Sorption characteristics of nitrogen compounds is necessary in ascertaining their fate in the soil-w...
Field experiments were conducted to determine the effect of nitrogen (N) fertilizer forms and doses ...
The nonexchangeable or fixed NH4-N was determined by the method of SCHACHTSCHABEL in 130 samples of ...
Eight mineral soils (pH(CaCl2) 4.6—6.1, clay 4—65 %, org. C 1.9—5.7 %) were treated with ammonium ni...
High concentrations of ammonium (up to 0.1 cmol/kg) have been observed below 1 m depth in a Vertosol...
Previous studies have examined the effects of soil osmotic potential (Ψs) on net rates of mineraliza...
The ammonium fixing capacity of Finnish soils was studied by analysing a material of 139 samples fro...
Soil cation exchange capacity (CEC) measures the capability of soils to hold and release nutrients. ...
Understanding the factors influencing water and nutrient transport through soil profile is important...
Clay minerals can fix high amounts of ammonium in non-exchangeable form, which can be of management ...
Clay minerals can fix high amounts of ammonium in non-exchangeable form, which can be of management ...
Many soils in the Midwestern USA can retain ammonium (NH$\sb4\sp+$) and potassium (K$\sp+$) in nonex...
Natural zeolites are more and more frequently employed to remove excess ammonium in wastewater, sin...
The issue of exchange processes, retention and leaching of ions in soil is far from being completely...
Ammonium production is the key process for N nutrition of lowland rice because the mineralization pr...
Sorption characteristics of nitrogen compounds is necessary in ascertaining their fate in the soil-w...
Field experiments were conducted to determine the effect of nitrogen (N) fertilizer forms and doses ...
The nonexchangeable or fixed NH4-N was determined by the method of SCHACHTSCHABEL in 130 samples of ...
Eight mineral soils (pH(CaCl2) 4.6—6.1, clay 4—65 %, org. C 1.9—5.7 %) were treated with ammonium ni...
High concentrations of ammonium (up to 0.1 cmol/kg) have been observed below 1 m depth in a Vertosol...
Previous studies have examined the effects of soil osmotic potential (Ψs) on net rates of mineraliza...
The ammonium fixing capacity of Finnish soils was studied by analysing a material of 139 samples fro...
Soil cation exchange capacity (CEC) measures the capability of soils to hold and release nutrients. ...
Understanding the factors influencing water and nutrient transport through soil profile is important...