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United States Department of Agriculture

Agricultural Research Service

Research Project: Mechanistic Modeling of Multispecies Pasture Growth and Management

Location: Pasture Systems & Watershed Management Research

Project Number: 8070-21000-008-05
Project Type: Specific Cooperative Agreement

Start Date: Jul 01, 2011
End Date: Dec 31, 2014

1) Develop a model of pasture management incorporating multiple forage species and mechanistic nutrient cycling; 2) test model predictions against measured data collected on farms in the northeastern United States; and 3) employ the model in the context of Grazingland CEAP to understand and predict the environmental implications of conservation practices in temperate pastures of the northeastern United States.

Existing rangeland models are widely used, but are inadequate for the very different climatic conditions, dominant species, and management strategies used in temperate humid pastures. Existing mono- and multi-species models will provide the initial framework for development of a new mechanistic pasture model simulating plant growth, competition, and nutrient cycling in pastures. The model will be validated using on-farm data collected as part of ongoing ARS research. Model findings will contribute to both Grazingland CEAP efforts and to developing recommendations for pasture management.

Last Modified: 10/10/2015
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