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This demonstrates the capacity of the APSIM-Tropical Pasture model to simulate tropical pastures. Under cut-and-carry management, forage productivity was estimated with R 2 values from 0.89 to 0.94, Willmott agreement indices between 0.97 and 0.98, and Nash-Sutcliffe Efficiency values of 0.88 to up to 0.92. Model evaluation was performed through precision and accuracy indices and simulation errors. For this, three field experiments were conducted in the South-east of Brazil where pasture growth was measured in a cut-and-carry system, with irrigated and rainfed treatments, and in a rainfed grazing system.
Apsim on mac os simulator#
This study aimed to develop a tropical pasture model in the Agricultural Production Systems Simulator (APSIM) modelling framework, and to parameterise it to simulate Brachiaria brizantha ‘BRS Piatã’ growth, under grazing and cut-and-carry management.
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Many modelling approaches have been employed to simulate tropical grasses growth, but these have several limitations that must be solved by adapting them or creating new models.
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Tropical grasses are used as forage, to produce energy from biomass, for land restoration and carbon sequestration, among other applications.