Inmobilization-remineralization of NO3-N and total N balance during the decomposition of glucose,sucrose and cellulose in soil incubated at different moisture regimes |
| |
Authors: | Azam F Mahmood T Malik K A |
| |
Institution: | (1) Soil Biology Division, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan |
| |
Abstract: | A laboratory incubation experiment was conducted to study the effect of organic amendment and moisture regimes on the immobilization-remineralization
of NO3-N and total N balance in soil fertilized with KNO3. Immobilization of NO3-N was very rapid in soil amended with glucose and sucrose followed by a remineralization of organic N and accumulation of
mineral N. Cellulose caused a slow but continued immobilization and did not show net accumulation of mineral N during 8 weeks
of incubation. At the end of incubation, a significant increase in total N and organic N content of the soil was observed
which is perhaps attributable to the activity of free living N2 fixers. Although N losses seemed to have occurred at 100% WHC through denitrification in soil amended with glucose and sucrose,
main cause of NO3 elimination was microbial immobilization. |
| |
Keywords: | denitrification immobilization-remineralization of N N balance |
本文献已被 SpringerLink 等数据库收录! |