Current Production and Utilization of Coarse Grains

Coarse grains – maize, sorghum, pearl millet, finger millet, barley, and their relatives – quietly underpin a large share of the world’s food, feed, and energy supply. They grow where other cereals cannot, feed both people and livestock, and now increasingly fuel industries and power plants. Yet their full significance is often overlooked in conversations dominated by wheat and rice. A closer look at current production numbers and end-use patterns reveals just how central these grains have become to global and Indian agriculture alike.

The global production picture 🔗

Among all cereals grown worldwide, maize (corn) occupies the top position by volume. According to research published in the Annals of the New York Academy of Sciences, maize contains approximately 72% starch, 10% protein, and 4% fat, and has already become the leading cereal in terms of production volume globally, surpassing wheat and rice. The FAO Cereal Supply and Demand Brief projects world cereal utilization in 2025/26 to reach a record 2,943 million tonnes, with coarse grains accounting for most of the upward revision in feed use, particularly maize and barley.

The broader coarse grain family tracked by international agencies – including corn, barley, sorghum, oats, rye, millet, and mixed grains – collectively represents a substantial portion of total grain output. Industry data for 2024/25 shows overall coarse grain production projected at a record high, driven by increases in barley, millet, sorghum, oats, and rye even as corn output in certain regions dipped. The United States, China, and Brazil consistently rank as the top three maize-producing countries. For sorghum specifically, the United States leads global output, followed by Nigeria as a major African producer.

Agro-climatic factors shaping production geography 🔗

One of the defining features of coarse grain production is how strongly agro-climatic conditions influence which crops dominate in which regions. The FAO notes that millets are better adapted to dry, infertile soils than most other crops, thriving even where mean annual precipitation falls as low as 300 mm – far below the 400 mm minimum needed by sorghum and the 500-600 mm required by maize. This ecological advantage explains why pearl millet dominates semi-arid belts in sub-Saharan Africa and South Asia, while maize thrives in higher-rainfall or irrigated temperate zones.

In Africa, sorghum and pearl millet concentrate along the Sahel belt, with Nigeria accounting for over 40% of African millet output. In temperate zones like Europe and parts of North America, barley and oats are more prevalent. The practical consequence is a natural global distribution system: each region produces the coarse grain best suited to its climate, reducing dependence on irrigation-heavy crops.

India’s coarse grain production 🔗

India holds a uniquely important position in global coarse grain production. According to APEDA and Ministry of Agriculture data for 2024-25, India’s production of maize stood at 43.41 million tonnes and bajra (pearl millet) at 11.21 million tonnes, with total cereal production across all varieties reaching 332.05 million tonnes. India is the world’s second-largest producer of rice and wheat, and also ranks among the top producers of millet – producing around 11.8 million tonnes of millet annually, roughly 38% of global millet output, nearly triple its nearest rival.

The three primary coarse grains in India are pearl millet (bajra), maize, and sorghum (jowar). According to research in the Current Agriculture Research Journal, more than 60% of India’s coarse cereals are produced in five states: Karnataka, Madhya Pradesh, Maharashtra, Rajasthan, and Uttar Pradesh. The Ministry of Agriculture classifies sorghum, pearl millet, ragi, small millets, maize, and barley together as coarse cereals, noting they are predominantly grown in states that receive less rainfall and are resource-deficient.

Trends in India’s production area 🔗

Historically, coarse cereals held the largest share of India’s cultivated area among all foodgrains. Between 1950 and 1970, approximately 43% of the area under cultivation was devoted to coarse cereals, compared to 37% under rice and only 14% under wheat. This dominance eroded after the Green Revolution, which channelled investment, irrigation, and fertilizer support heavily towards rice and wheat. After 1976, rice cultivation area overtook coarse cereals, and after 2006, wheat area also exceeded it.

Within coarse grains, maize has bucked the overall declining trend. During the kharif season, maize accounts for about 15% of India’s grain production, followed by pearl millet at 8%, sorghum at 2.5%, and finger millet at 1.5%. Research also confirms that compared to rice, coarse grains like maize, pearl millet, sorghum, and finger millet are significantly less sensitive to climate variability, making them valuable crops in the context of increasing weather extremes.

How coarse grains are utilized globally 🔗

Coarse grains are not used primarily for direct human consumption. Their utilization spans food, animal feed, and industrial processing – and the proportions vary enormously by crop and region.

Animal feed 🔗

Feed use is the single largest application category for coarse grains globally, and maize leads this segment. Maize is the leading cereal in terms of utilization as livestock feed globally. At the global level, maize is consumed mostly for feed (61%), food (17%), and various industrial purposes (22%). Poultry, swine, and cattle operations are the primary consumers. In India, sorghum grain is increasingly used as poultry feed, with this application expanding in the commercial farming sector. Similarly, pearl millet stover and residues are a significant source of fodder for dairy animals, particularly in Gujarat and Rajasthan.

Direct food use 🔗

Direct food use of coarse grains is most significant in developing regions. In South Asia and sub-Saharan Africa, pearl millet and sorghum remain staple grains for hundreds of millions of people. Pearl millet is a staple food for approximately 90 million people in the Sahelian region of Africa and northwestern India, grown primarily on 30 million hectares in the arid and semi-arid tropical regions of Asia and Africa. In India, pearl millet is consumed as flatbreads (rotis), porridges, and fermented products. Finger millet (ragi) features prominently in Karnataka and Andhra Pradesh cuisines, particularly in traditional preparations for children and the elderly due to its high calcium content.

In Latin America, maize remains a central food grain – from tortillas and arepas to hominy and masa-based products. White maize varieties are primarily preferred for food consumption, while yellow maize largely goes toward animal feed and industrial processing.

Industrial applications 🔗

The industrial utilization of coarse grains, particularly maize, has expanded dramatically over the past few decades. Maize can be processed into a variety of products including starch, sweeteners, oil, beverages, glue, industrial alcohol, and fuel ethanol. Through wet milling, the grain is separated into its pure component classes – starch, protein, oil, and fibre – each of which has distinct downstream uses.

Starch and starch derivatives from maize are used across food processing, paper manufacturing, textiles, adhesives, pharmaceuticals, and even biodegradable plastics. The development of high-fructose corn syrup (HFCS) from the mid-1970s onwards accelerated wet-milling and sweetener-refining industries substantially.

Ethanol production has emerged as one of the most significant industrial uses. In the last decade, the use of maize for fuel production increased significantly, with ethanol production accounting for approximately 40% of US maize output. In India, increased government support through higher prices per litre of ethanol and increased minimum support payments for corn have driven expanded use of maize as an ethanol feedstock, positioning India as a growing player in South and Southeast Asian corn trade.

Corn oil, extracted from the germ during wet milling, serves as a cooking and industrial oil. A single bushel of corn can yield 33 lbs of sweetener, 31.5 lbs of starch, or approximately 3 gallons of ethanol fuel – reflecting its remarkable versatility as an industrial raw material.

Coarse grains in India: food, feed, and emerging industrial use 🔗

In India, coarse grain utilization has historically been dominated by direct food consumption, especially in rural and semi-arid regions. However, the pattern is shifting. Maize-based starch manufacturing has grown into a significant industrial segment. India still imports specialty starch derivatives used in pharmaceuticals, food processing, and industrial applications, indicating that domestic processing capacity has not yet fully met demand – a gap that also presents commercial opportunity.

The ethanol blending programme has created fresh demand for maize as a fermentation feedstock. Alongside this, the Indian Ministry of Agriculture and Farmers Welfare has formally recognized millets – including sorghum, pearl millet, and finger millet – as “Nutri-cereals” for production, consumption, and trade promotion. This policy shift, reinforced globally by the UN International Year of Millets in 2023, has opened new food product categories. Pearl millet flour, sorghum-based ready-to-eat snacks, and finger millet health foods are now commercially available in urban retail channels, expanding coarse grains beyond their traditional rural food base.

The animal feed sector also increasingly incorporates coarse grains as the Indian poultry and aquaculture industries expand. Sorghum, with its comparable energy profile to maize and lower cost in certain seasons, is a practical substitute feed ingredient. Distillers dried grains with solubles (DDGS) – the protein-rich co-product of ethanol production – adds another dimension to the feed utility of maize in India.

The food-versus-feed-versus-fuel tension 🔗

The expanding industrial and feed uses of coarse grains raise a genuine policy concern. As the ethanol industry absorbs a larger share of the maize crop, higher maize prices intensify demand competition and could affect prices for both animal and human food use. This “food vs. fuel” debate is not hypothetical – it played out acutely during the 2007-08 global food price crisis, when maize price spikes cascaded through livestock feed costs and consumer food prices across multiple countries.

At the same time, the nutritional case for coarse grains in human diets is compelling. Research supported by India’s National Food Security Mission indicates that millets are sustainable options to achieve food and nutritional security, though trends show declining area and production for jowar and ragi that may lead to supply deficits in coming years. Maintaining a balance between industrial demand growth and food security imperatives for these crops will be a key challenge for Indian agricultural policy in the years ahead.

What do you think? As maize increasingly serves industrial uses like ethanol and starch manufacturing, should policy prioritize protecting its supply for direct food consumption – especially in developing countries? And with India formally recognizing millets as Nutri-cereals, do you think shifting more coarse grain production back toward food use could effectively address nutritional deficiencies in rural populations?

References

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