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Finger millet

life science Maturity 11-13 Next article →

Finger millet, known scientifically as Eleusine coracana, is a resilient annual herbaceous plant.

Eleusine coracana (L.) Gaertn
Eleusine coracana (L.) Gaertn

It is a tetraploid species, which refers to its specific genetic structure. This plant is self-pollinating, meaning it can produce seeds without help from other plants. It likely evolved from a wild relative called Eleusine africana. Finger millet is a vital cereal crop because it can grow in harsh environments. It is highly drought-tolerant and can survive at high altitudes where other tropical crops might fail.

Millet fields in Annapurna
Millet fields in Annapurna

The growing process of finger millet depends on specific environmental conditions. Most varieties are short-day plants, meaning they grow best with about 12 hours of daylight. Temperature is also a key factor in its development. For example, Ugandan varieties thrive at an average temperature of 27 °C. They require a minimum temperature of 18 °C to stay healthy. While the plant prefers moderate annual rainfall, it is much more drought-tolerant than pearl millet or sorghum. It can grow in various soil types, including highly weathered tropical lateritic soils. It also tolerates moderately acidic soils with a pH of 5 and moderately alkaline soils with a pH of 8.2. However, it needs free-draining soil because it has a limited ability to handle waterlogging.

Farmers use several different methods to plant and manage these crops. One common method is broadcasting, where seeds are thrown directly onto the field. This is easy and requires no special machinery, but it makes weed control difficult. Another method is line sowing, where seeds are placed in rows with specific spacing. This helps farmers distinguish the millet from weeds during hand weeding. In some areas, farmers use drilling in rows with a direct-seed drill for conservation agriculture. Another option is transplanting, where seedlings are raised in nursery beds for four weeks before moving them to the field.

Ragi Plant
Ragi Plant

The history of finger millet is tied to the highlands of East Africa. It is native to the Ethiopian and Ugandan highlands. The earliest archaeological records of the plant in Africa date back to the 3rd millennium BCE. There was once a claim that finger millet was found at an Indian site from 1800 BCE. However, researchers later proved those grains were actually different types of hulled millets. In Africa, the cultivation of finger millet saw a rapid decline by 1996. This was because the crop requires a large amount of labor to manage. Many farmers switched to maize, sorghum, or cassava because those crops are less labor-intensive.

Despite these challenges, finger millet remains a significant crop in many regions. It is grown extensively in eastern and southern Africa, including Uganda, Kenya, and Tanzania. It is also a major crop in parts of Asia, such as India and Nepal. In India, it is a typical rabi crop, which is grown during the dry winter season. The plant's ability to grow at high elevations, such as the Himalaya region, is a unique advantage.

Millet fields in Annapurna
Millet fields in Annapurna

This allows it to occupy ecological niches that other tropical cereals cannot reach.

Cultivation is often threatened by biological stresses like weeds, pests, and diseases. Weeds are a major problem because finger millet seeds are very small. This leads to slow early growth, making the plant a weak competitor for light and nutrients. A common weed competitor is Eleusine indica, also known as Indian goose grass. Finger millet can also suffer from finger millet blast, a disease caused by the fungus Magnaporthe grisea. In Uganda, this fungus has caused yield losses of up to 80% in bad years. Other threats include the parasitic weed Striga, which can reduce yields by 20% to 80%, and various insect pests like the pink stem borer.

A handful of hope in Gulu, northern Uganda (6721454911)
A handful of hope in Gulu, northern Uganda (6721454911)

One of the most remarkable features of finger millet is its incredible storage capacity. The grains are very hardy and are rarely attacked by insects or molds. If the grain is kept unthreshed, it can be stored for up to 10 years. Some reports even suggest it can last up to 50 years under good conditions. This makes it an essential "famine crop" for communities to avoid risk. Once harvested, the grain is often processed into flour or eaten as porridge.

Ragi Porridge
Ragi Porridge

In some regions, it is even shaped into dense balls called ragi mudde.

RAGI MUDDE
RAGI MUDDE
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🖼️ Images & Media (7)
File:Eleusine coracana MHNT.BOT.2015.34.17.jpg
Eleusine coracana MHNT.BOT.2015.34.17.jpg
File:Eleusine coracana (L.) Gaertn.jpg
Eleusine coracana (L.) Gaertn.jpg
File:Millet fields in Annapurna.png
Millet fields in Annapurna.png
File:Ragi Plant.jpg
Ragi Plant.jpg
File:A handful of hope in Gulu, northern Uganda (6721454911).jpg
A handful of hope in Gulu, northern...
File:Ragi Porridge.jpg
Ragi Porridge.jpg
File:RAGI MUDDE.JPG
RAGI MUDDE.JPG
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