Soil fertility is defined as the ability of a soil to provide the conditions required for plant
growth. It is a result of the physical, chemical and biological processes that act together to …

Soil quality is influenced by inherent and anthropogenic factors. This study was conducted to
provide multiple groups guidance on how to achieve and maintain improved soil …

Nitrogen (N) over-application is a serious problem in intensive agricultural production areas
with consequent large N losses and environmental pollution. In contrast to N, potassium (K) …

High grain production of corn (Zea mays L.) can be maintained by adding inorganic N
fertilizer, and also by using crop rotations that include alfalfa (Medicago sativa L.), but the …

Microbial immobilization/mineralization and mineral fixation/release of ammonium are
important for N retention and supply. However, the rates of such processes vary among …

Wood ash fertilization has yet to be investigated in Canadian boreal forests. Ash often
improves soil acid–base status, but without N addition it seldom increases tree growth on …

Aims Our aims were to:(1) compare the immobilization of NH 4+-N by clay minerals and
microbial biomass in soils with different fertilization history and (2) evaluate the effects of …

Soil aggregation physically protects soil organic matter and promotes soil carbon
persistence through microaggregate formation and organo-mineral associations. Tillage is a …

Increasing K+ adsorption can be an effective alternative in building an available K pool in
soils to optimize crop recovery and minimize losses into the environment. We hypothesized …

Geochemistry is a frequently used term in geological studies that defines a discipline which
has developed in importance over the past 40 years. The meaning of this term and the …