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.满足全球南方（Global South）的粮食需求，需推动小农户开展作物产量集约化种植。采用合成肥料的传统集约化种植模式，不仅会产生大量温室气体排放，还会给资源受限农户带来难以承担的成本负担。本研究针对印度42个村落的216户水稻种植小农户开展调研，结果显示：应用强化岩石风化（enhanced rock weathering）技术后，农户作物产量中位数提升24.7%，家庭收入增幅超过20%。该研究成果证实了一条无需依赖合成肥料的集约化种植路径，其部署成本可通过碳金融机制予以抵消。