The objective of this study was to explore under farming conditions the effect of reduced fertilizer N application rates on the dynamics of botanical composition and yields of grass-clover-swards. In both temporary and permanent grassland the percentage of highly productive grasses (good grasses) declined at a constant rate of 3.0 to 6.3% points y‑1 during the aging of the sward. Good grasses were replaced by less-productive grasses and herbs. The percentage of clover did not show a significant trend. Reduced N fertilization did not significantly change these dynamics. The percentage of white clover and, in some cases, high-yielding grasses in the sward, enhanced the yields of nitrogen and herbage dry matter, while the percentage of herbs reduced yields.
|Title of host publication||Grassland and forages in high output dairy farming systems|
|Subtitle of host publication||Proceedings of the 18th Symposium of the European Grassland Federation Wageningen, the Netherlands 15-17 June 2015|
|Editors||A. van den Pol-van Dasselaar, H.F.M. Aarts, A. De Vliegher, A. Elgersma, D. Reheul, J.A. Reijneveld, J. Verloop, A. Hopkins|
|Place of Publication||Wageningen|
|Publisher||Wageningen Academic Publishers|
|Publication status||Published - 17 Jun 2015|
|Event||18th Symposium of the European Grassland Federation Grassland and forages in high output dairy farming systems - |
Duration: 15 Jun 2015 → 17 Jun 2015
|Name||Grassland Science in Europe|
|Conference||18th Symposium of the European Grassland Federation Grassland and forages in high output dairy farming systems|
|Period||15/06/15 → 17/06/15|
Verloop, J., Oenema, J., & Geerts, R. H. E. M. (2015). Sward quality and yields of grassland in a dairy farm with reduced fertilizer N rates. In A. van den Pol-van Dasselaar, H. F. M. Aarts, A. De Vliegher, A. Elgersma, D. Reheul, J. A. Reijneveld, J. Verloop, ... A. Hopkins (Eds.), Grassland and forages in high output dairy farming systems: Proceedings of the 18th Symposium of the European Grassland Federation Wageningen, the Netherlands 15-17 June 2015 (Vol. 20, pp. 337-339). (Grassland Science in Europe; Vol. 20). Wageningen: Wageningen Academic Publishers.