With support from the Africa RISING project, a management strategy using biocontrol products containing native atoxigenic A. flavus fungi to reduce crop aflatoxin content has been developed for use in Ghana by IITA and partners. When products are applied at the right crop development stage, the atoxigenic fungi competitively displace aflatoxin-producers residing in treated fields and, in so doing, crop aflatoxin content is reduced.
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 research brief by Africa RISING offers tips on how farmers can get more yields when they grow groundnuts.