Past Work

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. […]

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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 […]

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Publications

For copies of papers presented at field days and conferences click here

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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.

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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

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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.

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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.

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Gibberellic Trial 2015

Up to three applications of Gibberellic Acid (Gibb) on ryegrass plots in July to September gave good immediate pasture responses of 400 – 600 kgDM/ha. However most of this additional pasture was lost afterwards due to “post-Gibb depression.” Repeat applications of Gibb delayed this depression in pasture growth.

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Split Calving Trial 1997-2000

This 3 year trial at NARF compared all autumn calving with spring calving. The farm has very wet soils and was a real test for winter milking, but the trial showed that a high level of pasture management was more critical to the success of winter milking than soil type.

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