Situated on the outskirts of Hamilton, our Holland Road trial began on the 3rd of March 2009 and continued until the 15 of May 2009 and the 10 week trial length sought to ensure that all the ground applied nitrogen had been used, or lost by the system before the trial concluded. The purpose of the trial was to demonstrate not only response rate differentials between Nhance and granular urea but to quantify the economic benefit of using the Quinspread system.
The trial had been set up using an 8 paddock rep and within each paddock were randomly positioned granular urea (50 kg/ha), Nhance (25kg/ha) and a control strip with no product. Pre and post grazing measurements were taken in all the paddocks for each rep (a minimum of 100 measurements with a rising plate meter). Most of the critical pre grazing measurements were taken by the farm share-milker, Brian Anderson. The recorded information over the 10 week trial showed that on average Quinspread Fluidised SustaiN treated areas ‘out yielded’ granular urea treated areas and the respective response rates were 35 kg DM/kg N applied for Nhance and 9 kg DM/kg N for granular urea.
When converted to a cash return (see Holland Rd Cost-Benefit Model) the Nhance again outperformed granular urea yielding a cash return after costs of $139/ha compared to just $45/ha for granular urea.
Please see the Trial Summary page for a summary of all our Waikato and Australian Trials.