Journal
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
Volume 50, Issue 22, Pages 2873-2880Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00103624.2019.1689250
Keywords
Nitrification; soil acidity; nitrogen mineralization; pH
Categories
Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [2011/14228-8]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [11/14228-8] Funding Source: FAPESP
Ask authors/readers for more resources
Soil pH is one of the properties that mostly influences nitrification rates, and can be used as a tool for controlling this process, seen that depending on its extent it may lead to nitrogen (N) losses and subsequent contaminations. The aims of this study were to evaluate mineralization and nitrification of two soils at different pH levels. The experimental design was factorial with two factors and three replicates, with the first factor referring to two samples of red latosols, one eutrophic (LV1) and the other dystrophic (LV2), and the second factor was soil's pH, at six levels: 4.0, 4.5, 5.0, 5.5, 6.0, and 6.5. Samples were incubated for 70 days in laboratory conditions. Both nitrate (N-NO3) and mineral N contents were determined and adjusted to growth models. The eutrophic soil presented higher mineral N and N-NO3, and the increase of pH levels led to increases of both inorganic N and N-NO(3)contents. Increases in pH levels caused N-NO(3)levels to increase in both soils, however this occurrence happened because it increased the amount of mineralized N in the soil, seen that in all pH ranges in both soils practically all mineral N was in the form of N-NO3.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available