The chickpea module was developed by Peter Carberry, Jill Turpin and Michael Robertson, with contributions of data from Bob Brinsmead and Harry Marcellos. The module is described in the paper by Robertson et al. (2002). This module is being updated by work conducted by Jeremy Whish at APSRU. The reader is referred to the science document for the plant module for a comprehensive description of the processes simulated by APSIM-Chickpea. This document outlines some chickpea-specific issues that are not covered by the plant science document.