Splitting second cut fertiliser applications

If the cutting interval is four or five weeks then the pressure is on to probably narrow that timeframe down further, especially the slurry applications. It’s not easy to prioritise nutrient applications in May, when many other jobs need doing.

The perennial question – do I go with the slurry or fertiliser first? It doesn’t really matter, but endeavour to get slurry applied as quickly after the first cut. The more regrowth on the field when slurry is applied, the greater the risk of slurry lingering on leaves at harvest. It’s good practice to leave 4 – 7 days between slurry and fertiliser applications.  

There may be good reason to split nitrogen applications on second cut, in the event of a dry period in the weeks ahead that will restrict second cut grass growth. There is an extra cost attached to splitting fertiliser applications, however a poor growth response to full rate nitrogen due to a soil moisture deficit might be costlier, especially at today’s nitrogen prices.  

We recommend total nitrogen rates of 80 – 100 kg N/ha for second cuts. The lower range on fields with lower yield potential or multi-cut systems with shorter growing period. If slurry is not being applied, then second cuts will likely benefit from a phosphate and potash top-up by using a quality NPKS fertiliser such as YaraMila Sulphur Cut.