| Summary: | The doubled-up legume system involving groundnuts and pigeon pea, comes across as being a perfect combination as the groundnuts only exploit the shallow soil profile and mature relatively faster whereas pigeon peas develop much slower while being deeper-rooted, leading to less competition in the system. Pigeon peas mature at least 2-3 months after the groundnuts, usually providing an increase in overall grain yield from both crops. Pigeon peas also add a large amount of slow decomposing biomass, besides nitrogen rich leaves and stems, which can be used partially as surface mulch or firewood. This benefits the whole cropping system and the household.
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