The mucuna module was developed by Michael Robertson. The reader is referred to the science document for the plant module for a comprehensive description of the processes simulated by APSIM-Mucuna. The paper by Robertson et al. (2004) outlines the science content of the module, and some testing in Malawi. This document outlines some mucuna-specific issues that are not covered by the plant science document.
Notable features of APSIM-MUCUNA
The module simulates the main variety grown in southern Africa – Kalagonda
The module does not simulate production from second and further flushes of flowers and pods.
APSIM-Mucuna is not phosphorus-responsive, this is currently under development.
Crop growth is not sensitive to waterlogging.
Go to generic Plant model documentation
Cultivars and crop classes
There is one crop class.
There is one cultivar able to be simulated: mucuna_gen. This cultivar is typical of that found growing under smallholder conditions in southern Africa.
APSIM-Mucuna has received testing in Malawi only, with factors such as sowing date and soil types. Table 1 summarises module performance reported by Robertson et al (2004).
Table 1: Observed (O) and simulated (S) biomass at flowering and maturity and grain yield for velvet bean crops used for model testing. All variables are in kg/ha.
|Biomass N at maturity||Grain N at maturity||Biomass at flowering||Biomass at maturity|
a=days after sowing of maturity harvest
b=crop at Chitala suffered late leaf diseases, therefore only sampling at flowering is recorded
c NM=not measured
In which environments should this module be used with confidence?
APSIM-Mucuna can be used with most confidence in southern Africa. No testing has been done elsewhere.
MJ Robertson, Sakala W, Benson T, Shamudzarira Z (2004) Simulating response of maize to previous velvet bean (Mucuna pruriens) crop and nitrogen fertiliser in Malawi. Field Crops Research (in press).