India's Ethanol Boom Could Open New Markets for U.S. Corn

With world corn carryout landing at 281.22 million tons in the June World Agricultural Supply and Demand Estimates (WASDE), nearly 4 million tons above the prior month and above the top end of trade forecasts, grain markets moved sharply lower. South America drew the early headlines, with Argentina adding 2 million tons and Brazil posting an all-time high of 138 million tons. The bigger surprise, however, came from a country the WASDE does not publish individually: India, whose corn production crossed 55 million tons for the first time in history. That record sits inside an economy where domestic ethanol demand, not global trade, is increasingly the destination for every additional bushel produced.

Mike Castle tracks agricultural commodity markets as Senior Commodities Economist at StoneX, with particular depth in farm input markets and the policy environments that shape production decisions across major growing regions. That grounding in how fertilizer policy and biofuel mandates interact with planting and yield decisions makes him the right analyst to explain why India's domestic corn economy looks so different from what standard global supply tables suggest.

Key Themes from the Discussion

• India's corn output exceeded 55 million tons in 2025-26, an all-time record, with the United States Department of Agriculture (USDA) projecting another 52 million tons in 2026-27.
• India's maximum retail price controls on fertilizer insulate farmers from global nitrogen price spikes, sustaining yield intensity regardless of input market volatility.
• India's expanding domestic ethanol sector absorbs most of its growing corn crop, limiting the export volumes available to Southeast Asian importers.

Watch the Full Conversation

India's Ethanol Mandate Converts a Surplus into Domestic Demand

India adopted its national biofuel policy in 2018, setting a target of 20 percent ethanol blending in gasoline by 2030. The country reached that target five years ahead of schedule. As sugarcane-based ethanol capacity approaches its limits, corn-based feedstock is becoming a more important source, drawing a growing share of India's expanded harvest into the domestic energy supply chain. Castle explains the consequence plainly: "They wanted to target getting E20, that's twenty percent ethanol in their gasoline by 2030. They achieved that five years early." [06:45] With more corn flowing toward ethanol production, and sugarcane feedstock reaching capacity, the volumes available to Asian export markets continue to shrink against a production base that keeps rising.

Fertilizer Subsidies Anchor Indian Corn Yields Against Global Volatility

While input cost pressures have weighed on corn producers across North America and parts of Europe, India's agricultural sector operates under a mechanism that effectively disconnects the farmer from global nitrogen markets. A maximum retail price cap limits what importers can charge growers for fertilizer, meaning that price spikes in global markets are absorbed by the importer rather than passed to the producer. "The farmer does not see the actual price. They're not seeing these movements in global prices like we do here in the States or elsewhere around the world." [08:15] Castle notes that this creates deeply inelastic fertilizer demand: Indian farmers apply heavily and do not reduce application rates in response to market conditions. The practical result is a yield profile that does not retreat when input markets move, supporting the step-change higher in Indian corn output seen across recent marketing years.

India's Export Retreat Opens Ground for US Corn in Asian Markets

India's corn exports have rarely exceeded 3.5 million tons in any year since 2020, a modest figure against a production base now above 55 million tons. As domestic ethanol consumption absorbs more of that harvest, the volumes available to South and Southeast Asian importers continue to tighten. Vietnam illustrates the dynamic: import flows from India and the United States have traded dominance year by year, with US supply stepping in when Indian availability contracts. US corn exports are already tracking at an all-time high of 3.325 billion bushels in the current marketing year, and Castle points to India's growing domestic consumption as a factor that could extend that demand tailwind. "If India is going to be keeping more of their corn at home, if they're going to have less corn available for the export market, that could be a situation where the US works itself back in." [10:00] A further complication is the emerging El Nino pattern in 2026, which historically suppresses monsoon rainfall in India's corn-growing regions and could pressure yields at the same time domestic demand continues to rise.

--- Written by Gus Farrow, Senior Manager, StoneX TV

--- Expert: Mike Castle, Senior Commodities Economist, StoneX