Who are Grazing Systems Ltd?
Barrie Ridler developed his initial farm production model while Senior Lecturer in Farm Production System at Massey University. Subsequent sheep and beef farm ownership with management responsibilities enabled practical on farm testing of the model where model scenarios were proven in their execution on his family’s farm.
Further development and the incorporation of new computing platforms along with design development followed with a number of rewrites and additional inclusions extended the range of the program to include the quantification of N excreta and GHG gasses from specific farming types and scenarios has given important insights into the effect of environment constraint on farming profitability.
Thirty years of effort focused on farm production systems management has given Barrie a wide ranging understanding of farming but with the significant but critical new understanding of the importance of input marginality for a viable farm business.
Roy McCallum a retired dairy farmer joined Grazing Systems Ltd when it was established as a business entity with the intention of developing and making the program available to individual farmers.
The plan for distribution has gone through a number of transformations but has now settled on a more research and institution focus as it was found that the educational effort to break through the barrier to uptake posed by the productionist mantra (more is better) residing in all NZ farmers concept of successful farming could not be achieved by two retired farmers promoting a major shift in management perception where less may equate more.
Both Barrie and Roy are certain in their belief that NZ pastoral farmer’s reputation for efficiency will eventually need the support of the strategic refinements available from farm systems modelling if NZ Farming is to continue to be a force in world markets.
This website is a platform in the process of making the educational shift required for farmers to benefit from the application of new technologies which are available to our competitors or producers of substitute competing products in the world market.