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Erosion/productivity modelling of maize farming in the Philippine uplands part I: Parameterising the agricultural production systems simulator

Citation

Nelson, RA and Dimes, JP and Paningbatan, EP and Silburn, DM, Erosion/productivity modelling of maize farming in the Philippine uplands part I: Parameterising the agricultural production systems simulator, Agricultural Systems, 58, (2) pp. 129-146. ISSN 0308-521X (1998) [Refereed Article]

DOI: doi:10.1016/S0308-521X(98)00043-2

Abstract

This paper describes the parameterisation of the Agricultural Production Systems Simulator (APSIM) model to simulate open-field farming and intercropping of maize with leguminous shrub hedgerows. Whenever possible, parameters for the model were determined from measured or standard values for the environment of the field trials, while other parameters were derived from previous modelling experience in tropical environments. The remaining parameters were derived using step-wise calibration, where one or two parameters were calibrated against closely related measured data. Once parameterised, APSIM gave acceptable predictions of maize yields and soil loss from open-field farming and hedgerow intercropping. The version of APSIM described in this paper is used to simulate maize yields and soil erosion from open-field farming and hedgerow intercropping in the second paper in this series (Nelson et al., this issue). In the third paper, Nelson et al. (this issue) use cost-benefit analysis to compare the economic viability of hedgerow intercropping relative to traditional open-field farming of maize in relatively inaccessible upland areas.

Item Details

Item Type:Refereed Article
Keywords:farming system; hedgerow; intercropping; maize; methodology; modeling; productivity; soil erosion; upland region; Philippines
Research Division:Agricultural and Veterinary Sciences
Research Group:Agriculture, Land and Farm Management
Research Field:Sustainable Agricultural Development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Summer Grains and Oilseeds
Objective Field:Maize
Author:Nelson, RA (Associate Professor Rohan Nelson)
ID Code:84724
Year Published:1998
Web of Science® Times Cited:16
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2013-05-29
Last Modified:2013-05-29
Downloads:0

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