🔅Pearl Millet (Bajra) -- The Most Drought-Tolerant Cereal

In the sandy dunes of western Rajasthan, where annual rainfall barely crosses 250 mm and temperatures soar above 45 C, pearl millet grows where no other cereal can survive. Known as the “Poor Man’s Food,” bajra feeds millions in the driest corners of Africa and Asia. It is the most drought-tolerant cereal on the planet, requiring only 250-350 mm of rainfall.

In the previous lesson, we covered Sorghum — the King of Coarse Cereals requiring 400-600 mm rainfall. Pearl millet survives in even drier conditions (250-350 mm) and is distinguished by its protogyny (female matures first), contrasting with sorghum’s often cross-pollinated nature and maize’s protandry.

This chapter covers:

1. Basics and protogyny — botany, cross-pollination mechanism
2. Climate — extreme drought tolerance, rainfall sensitivity at flowering
3. Seed rate and soil — phytate storage, acid soil sensitivity
4. HB-1 hybrid — India’s first pearl millet hybrid (1965)
5. Jerking — the unique cultural practice for uniform flowering
6. Diseases — Downy mildew (Green Ear Disease), Ergot, Smut
7. Minor millets overview — quick reference for all seven minor millets

For competitive exams, pearl millet brings unique topics — protogyny, the HB-1 hybrid milestone, jerking, and phytate storage of phosphorus.

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Pearl Millet / Bajra — Basics

Protogyny — Why Pearl Millet Is Cross-Pollinated

In protogyny, the stigma (female part) matures and becomes receptive before the anthers (male part) release pollen on the same spike. This temporal separation promotes cross-pollination rather than self-pollination — the exact opposite of maize’s protandry.

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Climate

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Seed Rate and Sowing

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Soil

• Best on well-drained sandy loams (good root penetration, no excess moisture).
• Sensitive to waterlogging (damages roots, promotes disease).
• Sensitive to acidic soils (low pH causes aluminium toxicity, stunting roots).
• 80% of phosphorus in grain is stored as phytate — an anti-nutritional factor for humans and monogastric animals because they lack the enzyme phytase to digest it.

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Manure and Fertilisers

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Hybrids and Key Facts

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Jerking — A Unique Cultural Practice

Jerking is done 20-25 days after transplanting (or 30-40 days after direct sowing). The early-formed ear heads of the first tillers are pulled out, which ensures uniform flowering of all tillers. This leads to uniform maturity, making harvesting easier and reducing grain losses from uneven ripening.

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Diseases

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Yield

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Important Pearl Millet Varieties ^{Asked in AFO/NABARD}

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Other Millets (Minor Millets)

Minor millets are mostly grown in dryland areas and are increasingly valued as nutri-cereals for their high mineral and fibre content.

Cheena / Proso Millet

• Panicum miliacearum
• Very short growing season (60-90 days), extremely low water requirement.

Little Millet

• Panicum sumatrense
• Rich in iron and fibre; adapted to poor soils and low rainfall.

Foxtail / Italian / German Millet / Kakun

• Setaria italica
• 2nd most widely grown millet globally; rich in dietary fibre, iron, and calcium.

Kodo Millet

• Paspalum scrobiculatum
• Coarsest millet (largest grain size); high fibre, low glycemic index — beneficial for diabetic patients.

Madua / Ragi / Finger Millet

• Eleusine coracana
• Most important minor millet in India; richest cereal source of calcium (344 mg/100g). Staple in Karnataka and Tamil Nadu.

Sawan / Barnyard Millet

• Echinochloa frumentacea
• Fastest growing millet (45-60 days); rich in fibre and iron; used as fasting food in India.

Japanese Millet

• Echinochloa esculenta
• Primarily a fodder crop suited to wet, marshy conditions; rapid growth and high green biomass.

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Summary Table — Pearl Millet at a Glance

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Summary Cheat Sheet