India is building the world's first national AI infrastructure for agriculture, giving 155+ million smallholder farmers access to real-time, personalized farming intelligence via simple voice calls. This represents a blueprint for how developing nations can leapfrog traditional agricultural extension systems using AI, potentially triggering similar deployments across the Global South where most of the world's farmers lack access to modern advisory services. The integration of weather, market, and agronomic data into a single AI platform could fundamentally reshape how agricultural knowledge flows from research institutions to individual farms.