Nitrogen and carbon mineralisation of different meliaceae derivatives

Graziella Marcolini, M. Toselli, M. Quartieri, P. Gioacchini, E. Baldi, G. Sorrenti, S. Mariani

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Abstract

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.
Original languageEnglish
Pages (from-to)121 - 127
Number of pages7
JournalPlant, Soil and Environment
Volume62
Issue number3
DOIs
Publication statusPublished - 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Soil Science

Cite this

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