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.

2011 - Wheeler, Cichota, Snow, Shepherd - A revised leaching model for Overseer nutrient budgets

Helpdesk
  • Updated

OVERSEER® Nutrient Budgets (Overseer) is a whole-farm nutrient budgeting tool, calculating budgets on an annual basis (Wheeler et al., 2006). 
The model is structured around ‘management blocks’, i.e. areas of the farm where management, soils and climate are similar. Previous versions of the model have separated pastoral and cropping based farms, but users have requested a number of changes to Overseer so that it is better able to represent a wider range of farms. 
These changes have included: integration of cropping and pastoral modules; inclusion of pasture blocks used mainly to grow supplement; and blocks for winter/summer forages. However, to accommodate these changes whilst still providing reliable estimates of N leaching under all the management options available, the N model needed to be modified. This paper outlines the approach that is being adopted.

In: Adding to the knowledge base for the nutrient manager.
(Eds L.D. Currie and C L. Christensen). http://flrc.massey.ac.nz/publications.html. 
Occasional Report No. 24. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand

Related articles