Suitable growing periods in peninsular Malaysia based on agricultural rainfall index analysis

M.Z. Ghazali

Abstract

Twenty-five years of monthly rainfall records from 300 stations in Peninsular Malaysia were analysed for their monthly agricultural rainfall index (ARI). The ARI were defined into three classes: ARI less than 40 indicated very dry month, ARI greater than 200 indicated extremely wet month, and ARI between 40 and 200 indicated a suitable period for crop growth. A map of Peninsular Malaysia showing zones of different lengths of growing periods was drawn. In the zones which experienced seasonally dry or wet months. the actual months when these occur were also indicated.

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