Oversowing and fertilising reduced the amount of bare ground and transformed the vegetation to a species composition dominated by the introduced adventives Anthoxanthum odoratum and Agrostis capillaris.
Although many of the effects associated with oversowing and fertilising, such as increased organic matter content of A horizons and increased biological activity, are positive, these effects must be balanced against the economic risk associated with being committed to a high-input farming system, the loss of low-producing but resilient native species, and increase of plant-pathogenic nematodes.
Fertilising increases dry matter production,and through nutrient cycling, organic matter is returned to the soil and soil carbon (C) content is increased (McIntosh et al.
A study of a soil monitoring network on Longslip Station, Omarama, recorded the soil changes such as organic matter accumulation and topsoil acidification resulting from fertilising since 1978 (McIntosh et al.
These results indicate that fertilising and oversowing result in elevated microbial C, N, and P pools, and this supports earlier work (e.