This evidence brief explains how Africa RISING is using an intercropping system known as ‘doubled-up’ legume technology using two complimentary grain legumes. Groundnut–pigeon pea intercropping is the most successful doubled-up system thanks to the two crops’ contrasting structures and maturity dates.
The doubled-up legume system in conservation agriculture is premised on the belief that while farmers will be in a position to get the usual benefits of the doubled-up legumes (‘double’ the grain output per farm, hence more food and also ‘double’ soil fertility through the leafy biomass components of groundnuts and pigeonpea); they will also potentially benefit more from increased moisture retention towards the end of the season as well as reduced labor in land preparation, if the backbreaking conventional tillage practice of ridging can be avoided.
A newly published brief by Africa RISING explains how the doubled-up legume technology works and how to get optimum yields using the technology.
At this week’s international conference on Integrated Systems Research for Sustainable Intensification in Smallholder Agriculture, Chiwimbo Gwenambira (Michigan State University) presented a poster explaining a a novel doubled-up legume cropping system in Malawi.