Agriculture assumes a pivotal role in ensuring sustenance and economic stability across diverse societies (FAO, 2020). With the burgeoning global population, there arises an urgent need for enhanced food production and agricultural progression (United Nations, 2020). The World Summit on Food Security in 2009 projected that by 2050, a minimum increase of 70% in food production would be imperative to meet the escalating demographic demands. Projection of Annual Food Production Increase and Associated Percentage Surge: Insights from Tester and Langridge (2010). Climate variability, compounded by the swiftly expanding populace, poses significant challenges to agricultural productivity. The repercussions are anticipated to be particularly pronounced in hot tropical regions, primarily inhabited by developing nations, as they are poised to encounter substantial losses in food production (Cline, 2007). Moreover, a considerable segment of the population in developing nations grapples with nutritional inadequacies and the prevalence of myriad micronutrient deficiencies (Singh B et al. 2015; Thapliyal et al. 2015). In light of this context, advancements in agricultural productivity resulting in increased accessibility of nutrient-dense foods at the household level can function as a pivotal tactic in alleviating nutritional challenges.
Millet, as a collective term, encompasses a diverse array of small-grained cereal grass species. Millets are traditional food crops as per Muthoni & Nyamongo 2010. These millets are broadly categorized into principal types such as sorghum and pearl millet, alongside various minor grain millets, which encompass finger millet (Eleusine coracana, also known as ragi), foxtail millet (Setaria italica, also referred to as kangni), kodo millet (Paspalum scrobiculatum, also known as kodo), proso millet (Panicum miliaceum, also termed cheena) (Rajasekaran & Francis 2021), barnyard millet (Echinochloa esculenta, commonly known as sawan) (Renganathan et al. 2020), and little millet (Panicum sumatrense, also recognized as kutki). The cultivation of these millet species offers a plethora of advantages, including inherent drought tolerance, resilience to environmental stresses, short to medium growth durations, low labor requirements, minimal input necessities, and natural resistance to various pests and diseases. As C4 crops, millets are well-suited to adapt to climate change. Some millet varieties, notably little millet and proso millet, mature in just 60–70 days, ensuring reasonably dependable yields even in challenging conditions. Biofortified improved varieties also can accelerate nutritional food security of the nation (Vinoth & Ravindhran 2017).
India possesses a rich reservoir of genetic diversity in millets. These crops also contribute to carbon sequestration, aiding in the mitigation of greenhouse gas emissions. Often referred to as "nutri-grains," millets are abundant sources of essential micronutrients such as minerals and B-complex vitamins. Furthermore, millets harbor health-promoting phytochemicals, thus positioning them as viable candidates for deployment as functional foods. Millet cultivation constitutes a cornerstone of rain-fed agriculture, upon which approximately 60% of Indian farmers depend. These crops serve dual purposes by providing both food and fodder and are amenable to intercropping (polyculture) with pulses and vegetables, thereby augmenting their versatility and utility. According to the latest available data, the foremost millet-producing nations worldwide include India, Nigeria, Niger, Mali, Burkina Faso, China, Sudan, Uganda, Ethiopia, and Senegal. See Table 1 for major millet-producing countries.
Table 1
World's leading millet-producing countries
Rank | Country | Production (Tonnes) |
1 | India | 1,09,10,000 |
2 | Nigeria | 50,00,000 |
3 | Niger | 29,55,000 |
4 | China | 16,20,000 |
5 | Mali | 11,52,331 |
Source: World Atlas |
Fingers millet, as a main crop among tribals flourishing in arid regions, it demonstrates adaptability to harsh climatic conditions, necessitating minimal inputs while exhibiting superior nutritional attributes (Gull, A. et al. 2014; Lata, C. 2015; Sinha & Sharma 2022). This crop has garnered substantial attention in scientific circles due to its remarkable ability to thrive under high temperatures, low moisture levels, and nutrient-poor soils (Shukla A et al. 2015). Finger millet is no longer confined to the category of coarse cereals; it is now acknowledged as a nutri-cereal or nutraceutical crop, offering potential remedies for addressing global malnutrition and hidden hunger (Gupta, SM et al. 2017). Abundant in calcium, iron, magnesium, and the amino acid methionine (see Table 2), finger millet addresses deficiencies prevalent in the diets of nutritionally vulnerable households, which primarily rely on refined staples such as polished rice or maize (Farnandez et al. 2013, Gopinath et al. 2015). Furthermore, its dietary fiber and mineral contents are notably elevated (see Table 2). Moreover, its abbreviated growth cycle and adaptability for year-round cultivation render finger millet desirable within intensive cropping systems. The seeds exhibit prolonged shelf life with minimal susceptibility to storage pests, rendering them a dependable reserve during periods of famine and in regions susceptible to vulnerability (Singh & Raghuvanshi 2012). While crops like rice and maize contribute to food security, finger millet confers multifaceted benefits including food, fodder, fiber, nutrition, health, environmental sustainability, and livelihood enhancement at nominal expense, presenting significant opportunities for food and nutrition security (Gupta, et al. 2017). Projected demand for millets by 2025 stands at 30 million tonnes, necessitating heightened productivity through the adoption of superior varieties, implementation of sound agronomic practices, efficient extension activities, and robust policy interventions.
The Hazaribagh district situated in the Jharkhand state of India experiences an average annual precipitation of approximately 1255 mm, with around 73 percent of this rainfall occurring during the month of August. The cold-weather season prevails from November to February, while the hot-weather season extends from March to mid-June. May emerges as the hottest month, with daily maximum temperatures soaring to the upper 90°F (approximately 37°C) and minimum temperatures hovering in the mid-70s°F (mid-20s°C). Sandy soil predominates in Hazaribagh and Dhanbad. Agriculture relies primarily on rainfall, with the kharif season (June–September) being the main cropping period. Within subsistence farming households located in the rainfed uplands of the district, sorghum (Sorghum bicolor), pearl millet (Pennisetum glaucum), and finger millet (Eleusine coracana) emerge as principal staple food crops among the millets category, following closely behind paddy (Oryza sativa). The plateau area of Hazaribagh district comprises forests occupying around 45% of the total area. Cultivable land can be categorized into Upper land and Lower land, with fertile lands situated along riverbanks. Principal crops cultivated encompass rice (Oryza sativa), maize (Zea mays), pigeon pea (Cajanus cajan), black gram (Vigna mungo), and green gram (Vigna radiata), while predominant livestock reared include goats (Capra aegagrus hircus), pigs (Sus scrofa domesticus), cattle (Bos taurus), and buffalo (Bubalus bubalis). Tribal communities primarily engage in the cultivation of indigenous landraces of finger millet, such as Birhor, Korwa, Hill Kharia, Sauria Paharia, Mahli, Lohra, Karmali, and Chik Baraik, alongside Santhal, Munda, Oraon, Ho, Bhumij, and other ethnic groups, employing traditional agronomic methodologies. Millet cultivation primarily takes place during the kharif season on marginal lands in upland and hilly terrains, frequently with limited or no external inputs, either as a monoculture or in intercropping systems with diverse pulses, legumes, and oilseeds (Ali 2015). Beyond its nutritional significance, finger millet substantially augments the income of rural households, being either directly marketed as grain or utilized in the production of local beverages for sale in regional markets where demand is robust. Strategies aimed at enhancing the demand for millets encompass: (i) Heightened awareness campaigns highlighting their environmental sustainability and nutritional advantages, (ii) Facilitation of accessibility through the integration into Public Distribution Systems (Rajsekhar & Raju 2017), (iii) Implementation of value addition initiatives, and (iv) Inclusion in feeding programs such as the mid-day meal scheme, Integrated Child Development Services (ICDS) feeding, and proposed adolescent girls nutrition scheme (currently under deliberation by the Ministry of Women and Child Development).
1.1 Nutritional Security by Millets
Nutritional security via millets refers to the pivotal role these small grains play in ensuring a steady and balanced food supply, thereby enhancing the nutritional well-being of communities. Nutritional security constitutes a foundational aspect of food security, encompassing access to safe and nutritious food that meets dietary requirements (FAO, 2006). In this context, millets have emerged as significant contributors to nutritional security, particularly in areas with restricted access to varied food sources (Saleh et al 2019). Millets, encompassing finger millet (Eleusine coracana, also known as ragi), pearl millet (Pennisetum glaucum), sorghum (Sorghum bicolor), and other varieties, exhibit high levels of vital nutrients, including vitamins, minerals, dietary fiber, and protein (Saleh et al 2019). They are exceptionally well-suited to combat malnutrition challenges and dietary deficiencies. Millets serve as abundant sources of crucial micronutrients like iron, zinc, calcium, and B vitamins (Gupta et al. 2016, Hakeem et al. 2020, Pragya et al. 2015). High in dietary fiber, millets promote digestive health and help prevent non-communicable diseases (Sharma et al., 2016). Additionally, millets provide essential plant-based proteins (Shobana et al 2013).
Table 2
Nutrient composition of millets compared to cereals (per 100 grams)
Millets/Cereals | Carbohydrate(g) | Protein (g) | Fat (g) | Energy (Kcal) | Crude fiber (g) | Mineral matter (g) | Ca (mg) | P (mg) | Fe (mg) |
Sorghum | 72.6 | 10.4 | 1.9 | 349 | 1.6 | 1.6 | 25 | 222 | 4.1 |
Pearl millet | 67.5 | 11.6 | 5 | 361 | 1.2 | 2.3 | 42 | 296 | 8 |
Finger millet | 72 | 7.3 | 1.3 | 328 | 3.6 | 2.7 | 344 | 283 | 3.1 |
Foxtail millet | 60.9 | 12.3 | 4.3 | 331 | 8 | 3.3 | 31 | 290 | 2.8 |
Proso millet | 70.4 | 12.5 | 1.1 | 341 | 2.2 | 1.9 | 14 | 206 | 0.8 |
Kodo millet | 65.9 | 8.3 | 1.4 | 309 | 9 | 2.6 | 27 | 188 | 0.5 |
little millet | 67 | 7.7 | 4.7 | 341 | 7.6 | 1.5 | 17 | 220 | 9.3 |
Barnyard millet | 65.5 | 6.2 | - | - | - | 4.4 | 20 | 280 | 5 |
Rice (raw, milled) | 78.2 | 6.8 | - | - | - | 0.6 | 10 | 160 | 0.7 |
Wheat (whole) | 71.2 | 11.8 | - | - | - | 1.5 | 41 | 306 | 5.3 |
Source: Nutritive value of Indian foods, NIN, Hyderabad overall dietary protein intake (Shobana et al., 2013).
Gluten-Free: Most millets are naturally gluten-free, suitable for individuals with celiac disease or gluten sensitivities (Khokhar & Khokhar, 2015)