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Recent activity by Helpdesk-
2008 - Mcdowell, Wheeler, De Klein, Rutherford - Deer and Environment
Deer and environment: Overseer model upgradeThe article can be accessed in the attachment or on the Grassland Association website hereDeer and environment: Overseer® upgradeMcDowell. R, Wheeler D, ...
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2008 Morgan, J. Pain, B. - Anaerobic digestion of farm manures and other products for energy recovery and nutrient recycling
Anaerobic digestion comprises a sequence of naturally occurring bacterial processes that breakdown complex, organic compounds in the absence of oxygen.Digestion reduces chemical and biological oxyg...
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2008 - Johnston - Resource or Waste: The Reality of nutrient recycling to land
The recycling of plant nutrients in agriculture through the use of organic manures, biosolids and other organic wastes is discussed with special reference to phosphorus (P) and its efficient use in...
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2007 - Wheeler, Ledgard, Monaghan - Role of the Overseer nutrient budget model in Nutrient Management Plans
Like any management plan, nutrient management plans should include descriptions of the nutrient resource and current practices that may affect nutrient use and nutrient flows within a farm. The pla...
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2006 - Wheeler et al. - Overseer nutrient budget model - what is it, what it does
The OVERSEER® nutrient budget model is an on-farm decision support model to help users develop nutrient budgets for nitrogen (N), phosphorus (P), potassium (K) and sulphur (S), calcium (Ca), magnes...
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2006 - Ledgard et al. - N Leaching as affected by dairy intensification and mitigation practices in the Resource Efficient Dairying (RED) Trial
2006. In: Implementing sustainable nutrient management strategies in agriculture.(Eds L.D. Currie and J.A. Hanly). Occasional Report No. 19. Fertilizer and Lime Research Centre, Massey University,...
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2003 - Wheeler, Ledgard, deKlein, Monaghan - Overseer - moving toward on-farm resource accounting
In this paper we will outline how OVERSEER® nutrient budgets program has been used to improve farm nutrient management, and describe how greenhouse gas and energy emission profiles from farms have ...
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1999 - Ledgard, Edgecumbe, Roberts - Application of the nutrient budgeting model Overseer to assess management options and Regional Council consent requirements on a Hawke’s Bay dairy farm
Proceedings of the New Zealand Grassland Association 61: 227–231 (1999)https://www.grassland.org.nz/publications/nzgrassland_publication_521.pdf
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1999 - Ledgard et al. - Overseer - A nutrient budgeting model for pastoral farming, wheat, potatoes, apples and kiwifruit
This paper describes the model OVERSEER™ which can be used to estimate the inputs, outputs and balances (from productivity and total site perspectives) of N, P, K and S for pastoral systems, apples...
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1999 - Ledgard et al - Nitrogen losses from grazed dairy pasture, as affected by nitrogen fertiliser application
The aim of the reported study was to examine N inputs and losses (particularly by nitrate leaching) from grazed dairy pasture, as affected by N fertiliser application.At the time of this study ther...