Increased yields for smallholder farmers from enhanced rock weathering

Meeting food demand in the Global South requires smallholder yield intensification. Conventional intensification using synthetic fertilizers embeds significant greenhouse gas emissions and imposes costs infeasible for resource-constrained farmers. We present results from 216 smallholder rice farmers across 42 villages in India showing a median 24.7% yield increase and over 20% increase in household income from enhanced rock weathering. This demonstrates a pathway toward intensification not dependent on synthetic fertilizers, with deployment costs offset by carbon finance.