Among Meliaceae derivatives, neem cake is usually used as a fertilizer; however its origin and industrial processing are often unknown, so that its effect on soil fertility is not predictable. In this study, the effect of soil incorporation of 6 commercial neem cakes and leaves of Melia azedarach L. on nitrogen (N) and carbon (C) dynamics was investigated in a 118-day laboratory incubation experiment. Neem cake at a rate of 8 g/kg of soil and melia leaves at16 g/kg were incorporated into the soil and their net N and C mineralisation were evaluated 2 h after application and at day 1, 2, 6, 12, 26, 54 and 118, by analysing a 50-g soil sample placed in 250 glass jars. The apparent net N mineralisation was well predicted by N concentration and C/N ratio of derivatives. The derivatives with a C/N ratio 24 can be used to reduce soil mineral N.
All Science Journal Classification (ASJC) codes
- Soil Science
Marcolini, G., Toselli, M., Quartieri, M., Gioacchini, P., Baldi, E., Sorrenti, G., & Mariani, S. (2016). Nitrogen and carbon mineralisation of different meliaceae derivatives. Plant, Soil and Environment, 62(3), 121 - 127. https://doi.org/10.17221/637/2015-PSE