Simulating forage plantain growth and defoliation in APSIM
Rogerio Cichota, Xiumei Yang
TL;DR
A new model was developed to simulate plantain forage growth and defoliation in APSIM, aiming to improve grazing systems and reduce environmental impacts.
Contribution
A novel APSIM-based model for simulating plantain forage growth and defoliation management, applicable in monoculture and mixed swards.
Findings
The model accurately predicts biomass accumulation and nitrogen content in pure plantain stands.
Model performance for individual defoliation events was less accurate.
More data is needed to improve predictions of biomass partitioning under varying conditions.
Abstract
The methodology used to develop and test a crop system model to simulate growth and defoliation management of plantain forage (Plantago lanceolata L.) in the Agricultural Production Systems Simulator (APSIM) framework is presented. The model has been primarily developed based on data from New Zealand, but it should be applicable in other regions, and it can be extended to account for new cultivars being released in the market. The model is capable of simulating pure forage plantain stands and can also be used in mixed swards with other forage species within the APSIM framework. Validation tests for the current stage focused on pure forage plantain stands in New Zealand; results showed a good model performance when predicting biomass accumulation over a growing season and nitrogen content (with NSE > 0.8), although predictions for individual defoliation events were not very accurate (NSE…
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Taxonomy
TopicsPasture and Agricultural Systems · Soil Carbon and Nitrogen Dynamics · Bioenergy crop production and management