Farm emission plan announced, expect to pay more for your food...

[harm_less]

"https ://www.tandfonline.com/doi/pdf/10.1080/00288233.1988.10423439 Dead link"

Take out the space before the colon and it works.

P.B.S. Hart & J.A. August (1988) Use of nitrogen fertiliser in restoration of pasture productivity and soil fertility after topsoil mining, New
Zealand Journal of Agricultural Research, 31:4, 439-443, DOI: 10.1080/00288233.1988.10423439
To link to this article: https://doi.org/10.1080/00288233.1988.10423439

Abstract The response of a grass-clover pasture to fertiliser nitrogen (N) on land mined of its topsoil 6 years previously was measured over 2 years. The effect of fertiliser N on the soil microbial biomass and organic matter content was also measured. N (150 kg N/ha in three split dressings of urea) increased the annual pasture production of 4850 kg dry matter (DM)/haby 47% in the first year of application. In the second year, N (200 kg N/hain four split dressings) increased the annual pasture production of 9500 kg DM/ha by 34%. Grass responded to the addition of fertiliser N whereas clover was suppressed. The soil microbial biomass content of the surface 20 cm was 70% higher after 2 years of adding fertiliser N. The corresponding organic matter content was 10% higher after addition of fertiliser N. These results are discussed in relation to use of fertiliser N as a management tool in restoring plant productivity and soil fertility on land disturbed by topsoil mining.

Interesting study of remediation techniques following removal (mining) of topsoil altogether as happens in mining overburden removal or 'recontouring' of farmland. Essentially a blank canvas so far as soil biome and OM is concerned so N is being used to drive biological activity in a similar fashion to adding 'green' (N rich) material to a composting scenario to feed the breakdown organisms. Also worth noting that N application had a negative effect on legume N fixation activity so that aspect of self-remediation was restricted in favour of application of synthetic N.