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Pearl millet grain is now one of the most widely grown crops in the world. This is because it can thrive in poor soils and extreme temperatures, making it exceptionally drought-resistant. It is widely used as animal feed and fodder in many parts of the world.
Some common types of pearl millet include:
Proso millet
Proso millet is known for its short growing season since it matures within 70–90 days. It is well-adapted to temperate regions and does not require much water for irrigation. This variety is often grown in dry regions of Eastern Europe and Western Asia, and its seeds are commonly used for bird feed and in certain human food products.
Browntop millet
Browntop millet also matures quickly, usually within 60 days. It has a lower water requirement, and thus, it is primarily grown in areas with low to moderate rainfall. The seeds from this millet are especially used in bird feed and are also gaining popularity as a gluten-free food option for humans.
Foxtail millet
Foxtail millet is characterized by its distinctive seed heads. This millet takes about 60 days to mature, making it suitable for short growing seasons. It grows well in both well-drained and moderately wet soils and is cultivated widely in Asia and parts of Africa. Its grains are often used in animal feed, but it's also consumed by humans in some cultures.
Japanese millet
Japanese millet is primarily grown for its high-quality forage rather than for its grain. This type of millet matures within 60 days and grows best in areas with warm temperatures and adequate rainfall. Farmers prefer it for hay and pasture because of its nutritious leaves and stems.
Teff millet
Teff millet is especially prized for its small seeds and high nutritional value. The millet takes around 70 days to mature and is known for its ability to thrive in poor, acid soils, though it requires consistent moisture. Teff is a staple in Ethiopian cuisine, most famously used to make injera.
Pearl millet is widely cultivated and is particularly valued for its resilience to harsh climatic conditions and nutritional benefits. Its tiny round grains are the most widely used seeds in various applications like animal feed, food products, and industrial uses. The process of harvesting pearl millet grains involves several key steps.
The right time to harvest
Pearl millet is usually harvested when the grains are hard and the moisture content is around 12-14%. Farmers often monitor the fields and check the seed heads for signs of maturity, such as dry and brittle leaves and a change in color.
Cutting the plants
Farmers usually use sickles or hand shears to cut pearl millet seeds from the stalks, leaving a few inches of the stem for the next growth cycle. In large-scale farms, mechanized harvesters like combine harvesters are used to cut the millet crops. In some regions where millet is grown, crops are also harvested using a mechanical millet thresher whose main work is to separate millet grains from the stalks and chaff.
Threshing
Threshing millet helps to separate the grains from the chaff, husk, and other non-grain parts of millet plants. It is manually done by beating the millet stalks on a hard surface or using animals to walk over the harvested millet. In more mechanized operations, power-driven threshers are used. These millet thresher machines are especially common in large-scale production or commercial setups.
Cleaning the grains
After threshing, millet grains are usually mixed with a lot of debris, including husks, dirt, and broken stalks. Small millet seed cleaning machines are used to sift the grains and remove all the impurities. Cleaning helps in improving the quality of the pearl millet grains. In small-scale farming, handpicking or rudimentary cleaning methods are common.
Drying the grains
Cleaning millet grains is important, but the grains also need to be dried to extend their shelf life. Farmers spread the cleaned grains on clean, flat surfaces like mats or tarps to dry in the sun. This is common in small-scale production where grain dryers are not readily available. In large-scale farming, automatic grain-drying machines are used to reduce the moisture content to around 12% in order to prevent mold growth.
Storage
Proper harvesting and drying of pearl millet grains prepare the grains for storage. Millet can be stored in jute bags, plastic containers, or metal silos, depending on the scale of production. Smallholder farmers often store grains in their homes, while larger producers store in warehouses.
The nutritional and health benefits of pearl millet flour make it highly suitable for different uses, especially agricultural, food, and industrial sectors. Its high nutritional content, climate resilience, and versatility offer multiple advantages.
Agricultural benefits
Pearl millet is highly adapted to poor, arid, and semi-arid soils, making it ideal for regions with low fertility or extreme temperatures. It is also drought-resistant and can tolerate heat and salinity, which makes it a resilient crop in challenging climates. Pearl millet has a deep and extensive root system, which helps reduce soil erosion and improve soil structure over time.
Health and nutritional benefits
Pearl millet is highly gluten-free, which makes it a go-to choice for people with celiac disease or gluten intolerance. It is also a rich source of dietary fiber, which promotes digestive health and helps prevent constipation and other gastrointestinal disorders. The high mineral content of millet makes it ideal for fighting nutrient deficiencies, especially in regions with staple-based diets. Its potassium content aids in blood pressure regulation, and magnesium helps maintain muscle and nerve function.
Food security and industrial uses
Pearl millet can be used to produce a variety of food products, ranging from flour for baking to fermented beverages, porridge, and flatbreads, increasing food diversity in diets. It can be used as animal feed due to its high nutrient content, especially in livestock and poultry rations. Pearl millet's grains can be processed into biofuels, providing renewable energy alternatives. Millet husks are used in making eco-friendly, biodegradable packaging materials and building composites, which are useful for reducing plastic pollution.
The process of harvesting and storing pearl millet grains is crucial in order to preserve their quality and ensure they remain usable and healthy for consumption. Below are some of the tips to store millet seeds.
Dry the grains properly
Before storing harvested millet grains, they should be properly dried to reduce moisture content to about 12%. Either spread the grains in the sun or use mechanical driers to ensure the grains are adequately dried. This helps to prevent mold and spoilage.
Use airtight containers
Store the dried millet grains in airtight containers such as plastic or glass jars, sealed bags, metal tins, or vacuum-sealed packaging. Such containers help prevent moisture, air, and pests from getting into the stored grains.
Keep the storage area cool and dry
Store millet grains in a cool, dry place where temperatures remain consistently low, ideally between 50°F and 70°F (10°C - 21°C). Avoid storing grains in areas exposed to direct sunlight, which can raise the temperature and degrade the quality of the grains. Since pearl millet is highly tolerant to extreme conditions, the post-harvest grains can also be temporarily stored in conditions that are unpreferable to the crop. However, this only hampers the lifespan of millet grains, which is consequently shorter in a non-ideal environment.
Use proper packaging
Jute or burlap sacks are traditionally used for storing millet on small farms because they allow air to circulate. Plastic bags or sealed bins are better for larger quantities to prevent pests. Grain storage silos, either metal or plastic, are suitable for longer-term storage and larger quantities as they protect the grains from pests and moisture.
Regularly check stored grains
Regularly check the millet storage containers for signs of pests, mold, or moisture. Any millet that is spoiled, moldy, or infested should immediately be removed to prevent further contamination. It helps to monitor the condition of stored grains to ensure they remain viable for use.
Consider refrigeration or freezing
For longer storage, millet seeds can be placed in airtight containers and stored in the refrigerator or freezer. Cooler temperatures help to maintain seed viability and prevent pests. This method is especially useful for small quantities for home use.
A1 Pearl millet is used for a variety of agricultural, food, and industrial applications. It is usually used for making flour, porridge, and flatbreads in many regions. It is used to make alcoholic beverages like millet beer, especially in African and Asian cultures. Millet grains are the seeds of millet plants fed to livestock and poultry because they are highly nutritious. Pearl millet is grown mainly for ecological benefits such as improving soil health, reducing erosion, and promoting biodiversity.
A2 When stored properly in an airtight, cool, and dry environment, pearl millet seeds can last up to 3-5 years. Grain dryers are used to reduce the moisture content of millet seeds to around 12% so that millet seeds can last longer. Seed viability decreases over time, but proper storage can extend the lifespan of seeds for cultivation.
A3 Yes, pearl millet has several health benefits. It is a gluten-free grain that can be eaten by people with gluten intolerance or celiac disease. It is rich in fiber content, which aids digestion and promotes regularity. Pearl millet is high in essential minerals like magnesium, phosphorus, potassium, and iron. It helps to lower the risk of heart disease and helps maintain strong bones.
A4 Proper drying of harvested pearl millet grains is important before storing them to prevent mold growth. The grains should be dried to about 12% moisture content level, which can either be done in the sun or using grain dryers. Store the seeds in airtight containers like sealed bags, jars, or silos. Keep the storage place cool and dry to prevent spoilage and extend the shelf life of millet seeds.