Under double cropping situations and in depleted soils, AGROTAIN® nitrogen stabiliser protects urea so that more nitrogen is available to the crop.
In dryland cropping situations, AGROTAIN® nitrogen stabiliser can increase flexibility of timing of nitrogen applications – rather than waiting for the arrival of rainfall before top-dressing with untreated urea, farmers can apply urea treated with AGROTAIN® nitrogen stabiliser up to 10 days before being absorbed into the soil.
Trials conducted in Victoria’s Wimmera by the University of Melbourne and the CSIRO2 found that cumulative NH3 (ammonia) losses were significantly lower for urea treated with AGROTAIN® nitrogen stabiliser (1% of applied N) than for straight urea (9.5% of applied N).
The published report found that a lowered rate of N application and increased grain yield or protein concentration should cover the higher cost of the urease inhibitor.
Internationally, field studies conducted in New Zealand3 on irrigated winter wheat and on US canola4 found that urea treated with AGROTAIN® nitrogen stabiliser consistently resulted in higher yields.
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.
2 Determination and mitigation of ammonia loss from urea applied to winter wheat with N-(n-butyl) thiophosphorictriamide. Authors: D.A. Turner, R.B. Edisa, D. Chena, J.R. Freneya, O.T. Denmeada, R. Christie; representing Department of Resource Management and Geography, The University of Melbourne; CSIRO Plant Industry; CSIRO Land and Water; and Incitec Pivot Ltd.
3 Zaman et al., 2010. The effect of different rates of urea with or without urease inhibitor (NBPT) on wheat yield quality.
4 Ebelhar and Hart, 2010. Nitrogen rate and source effects on canola in Southern Illinois.