Soil pH Effects on Nitrification of Fall-Applied Anhydrous Ammonia

Freezing skeletal muscle tissue does not affect its decomposition in soil: Evidence from temporal changes in tissue mass, microbial activity and soil chemistry based on excised samples

“…This pattern has previously been observed in soils amended with sewage sludge which has a high level of readily available carbon that can stimulate microbial immobilization of N [24]. There are several possible reasons for this observation such as inhibition of nitrification due to high soil pH [25,26] or free ammonium [27][28][29], immobilization of nitrogen due to high levels of microbial activity during decomposition [24], or the slow rate of growth of nitrifying bacteria in comparison to other microbiota in the soil environment. Further investigation would be required to give a definitive explanation for the results, but they are likely caused by a combination of factors.…”

Effects of nitrogen fertilization on the acidity and salinity of greenhouse soils

“…On one hand, the nutrient content of the G0 soil itself was relatively low (Table 1), and the activity of nitrifying bacteria and other microorganisms was stimulated more by fertilization in such soil (Fontaine et al 2007). On the other hand, the initial pH of the G0 soil was higher, which provided favorable pH conditions for nitrification, since nitrification process is typically considered to be highly pH sensitive (Kemmitt et al 2006;Shen et al 2010) and low pH can be a limiting factor of nitrification reactions (Kyveryga et al 2004). Besides, the lower soil acid buffer capacity of the G0 soil also contributed to the higher degree of acidification (Table 1).…”

Impact of nitrogenous fertiliser-induced proton release on cultivated soils with contrasting carbonate contents: A column experiment

“…Low pH can be a limiting factor of nitrification reactions (e.g. Kyveryga et al, 2004;Kemmitt et al, 2005), which can explain the lower rates observed in the non-carbonated soil. On the other hand, nitrification was also low in the molasse saprolite soils, which indeed exhibited a higher pH.…”