Past Work
Future Farm Systems Trial Final Summary 2026
This paper summarises the 5 year Future Farm Systems trial, details the production and profit results and outlines the key findings Future Farm Systems Trial Final Summary 2026
Supplement Trial – Lessons learnt
This is a summary of the key lessons learnt from the 3 year Dairying in a Variable Climate trial looking at production and profit responses to adding PKE and other supplements. For more detailed information see the annual summaries at the end of each season. NDDT Supplement Trial […]
Supplement Trial Decision Rules
Click below to see the full set of decision rules we use to manage supplement feeding in our Dairying in a Variable Climate Trial NDDT Supplement Trial protocol and Decision Rules
Mastitis Trial – Effects of Teat Spraying and DCT
There have been many studies looking at the effects of teat spraying (TS) and dry cow therapy (DCT) as single treatments. This 2011 trial was unique in the way it measured how a combination of teat-spraying and whole herd DCT affect clinical mastitis and production in a pasture-based herd. […]
Urea v Ammo Trial 2019 Results
This plot trial in spring 2019 looked at pasture responses to Nitrogen, Sulphur and Potash. The trial was driven by farmers asking whether it was economic to apply Ammo or Potash instead of straight urea in spring. Three sites were used to test responses on different soil types Marine Clay […]
Reducing Reliance on Imported Feed Trial
Northland farmers have clearly identified that they would like to reduce their reliance on imported feed, and need to know the financial implications of this.
Partner Farm Project
The Northland Partner Farm Project followed on from the success of the Northland Focus Farm. Two further farms were monitored and mentored through three years to make significant improvements in their businesses. Click below for full details
Kikuyu Trial
This trial at NARF compared a kikuyu based farmlet with a ryegrass farmlet for profitability under best practice. The kikuyu was mulched and undersown with Italian rye in autumn, effectively transitioning the pasture to ryegrass each spring. Supplements were fed in order to maximise profit on both farmlets.
Kikuyu Management Guide
Download the farmer guide to managing kikuyu. This general guide has been developed by NDDT and DairyNZ. Farmers should note that optimal management techniques may vary between farms.