Leaf dynamics of sheep grazed sown swards under nutrient stress
1995
Marriot, C. (Macaulay Land Use Research Institute, Scotland (United Kingdom)) | Barthram, T. (Hartwood Research Station, Scotland (United Kingdom))
An experiment was set up in 1991 to determine the effects of cessation of fertiliser and reduced grazing on the species composition of predominantly ryegrass/agrostis/white clover swards. Productive swards received fertiliser applications of 140 Kg N/ha (and P and K in compound) and were maintained at 4 cm while extensively managed swards received no fertiliser and were maintained at sward heights of either 4 cm or 8 cm. There were differences in leaf dynamics between species and in their response to treatments. Mean rates of leaf appearance were similar for all three species but agrostis maintained a higher number of green leaves than ryegrass and clover maintained on average only 2.2 green leaves/stolon (P0.001)
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