Field and laboratory study of nitrogen mineralization dynamics in four Tunisian soils

Importance and inconsistencies of the influence of soil properties on nitrogen mineralization: a systematic review

“…Base saturation [59] and calcium [19] were found to be positively correlated with N min . The N:P ratio was found to be positively correlated with N 0 [91] . On the other hand, the C:P ratio was found to be negatively correlated with N 0 [91] , as was the carbonate content [92] .…”

“…The results show a variety of techniques in which soil moisture has been studied concerning N mineralization and availability. Moisture as water content and water holding capacity was found to be positively correlated with N 0 in a laboratory incubation experiment of agricultural and grassland soils [91] . Water content was also found to be positively correlated with N 0 by Campos et al [70] .…”

“…N min was found to be different when two types of soil with different textures were compared [29] . The sand percentage had a negative correlation with N min and N 0 [30] , and the clay percentage demonstrated a positive correlation with N min [30] and N 0 [30,91] . Silt + Clay percentage was not found to be correlated with N min [13] .…”

“…Phosphorus addition was not found significant to N min [22] . When phosphorus was correlated with N 0 , one study found the correlation significant and negative [8] , while another found no significance [91] . To find correlations, the attributes need enough variability to allow one variable to change depending on the variation of another variable, which is not always the case.…”

“…When there was a significant correlation, the results varied. The negative correlations of pH with N min [6,36,63] and N 0 [8,70,91] were the most common. Yang et al correlated N min with pH in ten analyses performed under different months and soil depths [21] .…”