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Erosion/productivity modelling of maize farming in the Philippine uplands part II: Simulation of alternative farming methods

Citation

Nelson, RA and Dimes, JP and Silburn, DM and Paningbatan, EP and Cramb, RA, Erosion/productivity modelling of maize farming in the Philippine uplands part II: Simulation of alternative farming methods, Agricultural Systems, 58, (2) pp. 147-163. ISSN 0308-521X (1998) [Refereed Article]

DOI: doi:10.1016/S0308-521X(98)00044-4

Abstract

A version of the Agricultural Production Systems Simulator (APSIM) capable of simulating the key agronomic aspects of intercropping maize between legume shrub hedgerows was described and parameterised in the first paper of this series (Nelson et al., this issue). In this paper, APSIM is used to simulate maize yields and soil erosion from traditional open-field farming and hedgerow intercropping in the Philippine uplands. Two variants of open-field farming were simulated using APSIM, continuous and fallow, for comparison with intercropping maize between leguminous shrub hedgerows. Continuous open-field maize farming was predicted to be unsustainable in the long term, while fallow open-field farming was predicted to slow productivity decline by spreading the effect of erosion over a larger cropping area. Hedgerow intercropping was predicted to reduce erosion by maintaining soil surface cover during periods of intense rainfall, contributing to sustainable production of maize in the long term. In the third paper in this series, 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; modeling; productivity; soil erosion; upland region; Philippines; Zea mays
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:84725
Year Published:1998
Web of Science® Times Cited:8
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2013-05-29
Last Modified:2013-05-29
Downloads:0

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