Key Points
- Over two years the highest yields for Italian ryegrass tended to be from row spacings of 15cm.
- For Italian ryegrass there was no clear effect of sowing rate over the two years of trials.
- Yield response to row spacing varied between sites and years with regard to both row spacings and sowing rates.
- The use of 45cm rows not only resulted in lower yields but also increased the weed pressure.
- In these trials there were no differences in ease of harvest or in the number of ryegrass volunteers between rows.