Skip to main content
DISCLAIMER:  Overseer Limited gives no warranties, representation or guarantees, express or implied in relation to the quality, reliability, accuracy and/or fitness for any purpose of the article. Overseer Limited expressly disclaims and assumes no liability whatsoever arising directly or indirectly from the use of, or reliance on this article.

COPYRIGHT: With the exception of user-supplied data, this Report is © 2018 Overseer Limited. All rights reserved. You may copy and distribute this Report in its entirety, as long as you do not mislead anyone as to its origin or implications, and provided you do not remove or alter the disclaimer above or this copyright notice.

How are fertiliser products with Urease Inhibitors treated within OverseerFM

Helpdesk
  • Updated

Various urease inhibitors (UIs) have been used over the last 30 years to reduce ammonia (NH3) losses via volatilisation. Among these, N-(n-butyl) thiophosphoric triamide (nBTPT), sold under the trade name Agrotain®, is currently used in New Zealand. 

Easily recognisable product brand names which include nBTPT which are available to New Zealand farmers are SustaiN and N-Protect.  

The effects of Urease Inhibitors were included in Overseer with the release of Version 6.3.2 release notes for which can be found here 

The methodology for the inclusion of Urease Inhibitors was developed for Overseer by AgResearch and agreed to following an online science discussion. The implemented methodology is attached below