Maize was planted in 2-row strips, leaving weeds (mainly grasses) to grow between the strips. In late summer, the weedy strips were sprayed with herbicide, and dry beans were planted in the resulting mulch.  Hlokozi, KwaZulu-Natal.
<a href="//commons.wikimedia.org/wiki/User:Alandmanson" title="User:Alandmanson">Alandmanson</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>