In Australian pastures, average NH3 (ammonia gas) emissions from fertilisers has been estimated at up to 30% of the applied N.
The nitrogen that is disappearing into thin air could be promoting pasture growth and farm productivity.
By using urea treated with AGROTAIN® nitrogen stabiliser, dairy farmers can improve the efficiency of N application and get a more reliable response out of each application.
Field trials in Victoria5 showed that urea treated with AGROTAIN® nitrogen stabiliser also increased pasture production at a lower cost per unit of dry matter than standard urea.
Field trials conducted in Victorian dairy pastures by the University of Melbourne and the CSIRO6 applied untreated and treated urea to a ryegrass seed crop at 40kg N/ha over an eight‑month period.
Ammonia loss and soil N were measured, with the results showing that AGROTAIN® nitrogen stabiliser slowed volatilisation, with urea hydrolysis at 15˚ and 25˚C not completed until 7 and 14 days respectively. This compared to just 3-5 days for untreated urea at all temperatures.
Trials at the Macalister Demonstration Farm7, Maffra, Vic, found that on an established, grazed, flood-irrigated perennial ryegrass dairy pasture, urea treated with AGROTAIN® nitrogen stabiliser produced the most dry matter production and at a lower cost per extra unit of dry matter compared with untreated urea.
View Koch's 'Nitrogen Loss Stinks!' e-booklet or download the pdf version here for more details of Australian trial data and yield improvements achieved around the world with AGROTAIN® nitrogen stabiliser.
Neither the individual researchers referred to, nor their respective universities, endorse the products mentioned herein.
5 Pasture response to Gibberellic Acid and Nitrogen Fertiliser, Macalister Demonstration Farm, 2010.
6 Can a urease inhibitor be used to reduce indirect indirect greenhouse gas emissions? Authors: Helen Suter, Deli Chen, University of Melbourne; Charlie Walker, Rohan Davies, Incitec Pivot Limited. Prasertsak, et al. 2001, Eckard, et al. 2003. Funding for the research provided by Incitec Pivot Ltd, Geelong, Victoria 3215 Australia.
7 Pasture response to Gibberellic Acid and Nitrogen Fertiliser, Macalister Demonstration Farm, 2010.