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Nitrogen Mineralization Potential as Influenced by Microbial Biomass, Cotton Residues and Temperature.
- Source :
-
Journal of Plant Nutrition . Feb2015, Vol. 38 Issue 3, p311-324. 14p. - Publication Year :
- 2015
-
Abstract
- Integrating information on nitrogen (N) mineralization potentials into a fertilization plan could lead to improved N use efficiency. A controlled incubation mineralization study examined microbial biomass dynamics and N mineralization rates for two soils receiving 56 and 168 kg N ha−1in a Panoche clay loam (Typic Haplocambid) and a Wasco sandy loam (Typic Torriorthent), incubated with and without cotton(Gossypium hirsutumL.)residues at 10 and 25°C for 203 days. Microbial biomass activity determined from mineralized carbon dioxide (CO2) was higher in the sandy loam than in clay loam independent of incubation temperature, cotton residue addition and N treatment. In the absence of added cotton residue, N mineralization rates were higher in the sandy loam. Residue additions increased N immobilization in both soils, but were greater in clay loam. Microbial biomass and mineralization were significantly affected by soil type, residue addition and temperature but not by N level. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01904167
- Volume :
- 38
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Plant Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 100298882
- Full Text :
- https://doi.org/10.1080/01904167.2013.868486