🌾 Pearl Millet (Bajra) Production Technology

This lesson outlines practical pearl millet production technology for arid and semi-arid regions with focus on resilience, nutrition, and yield stability.

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Importance of Pearl Millet

Pearl millet (Pennisetum glaucum) is the 6th most important cereal globally and the most drought-tolerant cereal crop known. It is a lifeline crop for millions of resource-poor farmers in the semi-arid tropics. Key facts:

• India is the largest producer globally, accounting for ~40% of world pearl millet production
• Rajasthan is the leading state with approximately 40% of India's pearl millet area
• Other major states: Haryana, Uttar Pradesh, Gujarat, Madhya Pradesh
• Nutritional significance: Pearl millet grain contains 8–11 mg iron per 100g (much higher than rice/wheat), addressing iron-deficiency anaemia in undernourished populations
• High energy value (362 kcal/100g); excellent feed grain for poultry and livestock

Botanical Classification

• Scientific name: Pennisetum glaucum (L.) R. Br. (also known as Cenchrus americanus)
• Family: Poaceae (Gramineae)
• Chromosome number: 2n = 14
• Pollination: Cross-pollinated by wind (protogynous — stigma receptive before pollen shed in the same head)
• Spiky cylindrical panicle (ear head); bristly surface; small, round, shiny grain (1.5–2 mm); diverse grain colors (white, cream, yellow, grey, slate blue)

Climate Requirements

• Temperature: 25–35°C; extremely heat-tolerant
• Rainfall: 200–600 mm; one of the most drought-tolerant cereals (short root system but efficient water use)
• Season length: 75–90 days (very short season); can mature before terminal drought in semi-arid regions
• Hot, arid, and semi-arid tropical regions; Sahel belt of Africa, Rajasthan, Haryana
• Low humidity preferred for ripening; high humidity promotes ergot and downy mildew

Soil Requirements

• Sandy to sandy loam soils preferred — good drainage essential
• Tolerates acidic soils (pH 5.5–7.0) better than most cereals
• Poor tolerance of waterlogging or heavy clay soils with poor drainage
• Grows in shallow, nutrient-poor soils where other cereals fail
• Saline soils reduce germination and yield — not well-tolerated

Varieties and Hybrids

Single Cross Hybrids

• HHB-67: CCSHAU, Hisar; most popular pearl millet hybrid in India; widely adapted; 75–80 days; grain yield 2.5–3.0 t/ha; tolerance to downy mildew
• HHB-197: CCSHAU, Hisar; improved version; 78–82 days; high yield
• GHB-558: Gujarat Agricultural University; Gujarat-adapted; 80 days
• MPMH-17: MP-adapted; medium duration; downy mildew tolerant

Open-Pollinated Varieties (OPV)

• Pusa Composite 383: IARI; widely adapted; 80 days

Biofortified Varieties — Addressing Micronutrient Deficiency

• Dhanshakti: Developed by ICRISAT in partnership with HarvestPlus; contains 71 ppm iron and 38 ppm zinc (vs 40–50 ppm Fe in normal hybrids) — directly addresses iron-deficiency anaemia in populations consuming pearl millet as staple
• Dhanshakti was released for Maharashtra, Karnataka; now being scaled up
• Regular OPVs: 40–50 ppm Fe; Dhanshakti 71 ppm Fe — nearly double
• Represents biofortification through conventional breeding (not GMO)

Early-Maturing Types (75 days)

• HHB-67: 75 days; most widely grown hybrid
• Rajya Amruth 2: Karnataka; short duration

Seed Rate and Spacing

• Seed rate: 4–5 kg/ha (very low seed rate — small seed size)
• Hybrids: CMS (Cytoplasmic Male Sterility) line × restorer line for commercial hybrid seed production
• Spacing: 45×15 cm (row-to-row × plant-to-plant)
• Sowing depth: Shallow — 2–3 cm (small seeds cannot emerge from deep sowing)

Sowing

• Season: June–July at onset of monsoon
• Seedbed: Well-prepared fine tilth; loose, friable soil for uniform germination of small seeds
• Germination: Rapid in warm, moist soil (3–5 days at 28–32°C)

Thinning

• After germination, thinning done at 15–20 DAS to maintain 1 plant per hill
• Multiple plants per hill reduce individual plant productivity and increase competition for water

Nutrient Management

• Recommended NPK (hybrid): 60:30:20 kg/ha
• Zinc: 25 kg/ha ZnSO₄ in zinc-deficient soils (common in Rajasthan sandy soils)
• Azospirillum seed inoculant: Fixes atmospheric N; applies 5–10 kg N equivalent; seed coating with jaggery solution
• Split N application: Basal (50%) at sowing + top-dressing (50%) at knee-high stage

Weed Management

• Pendimethalin 0.75 kg ai/ha as pre-emergence herbicide
• 2 hand weedings at 20 and 40 DAS
• Sandy soils prone to rapid weed emergence — timely weeding critical
• Striga hermonthica (witch weed) is a parasitic weed problem in some areas of Rajasthan; ethylene-based suicidal germination stimulants + resistant varieties

Integrated Pest Management (IPM)

Diseases of Pearl Millet

Downy Mildew (Green Ear Disease) — Sclerospora graminicola

• Most serious disease of pearl millet in India
• Seed-borne — primary infection source; secondary spread by sporangia in humid conditions
• Symptoms: Chlorotic (yellowing) leaf strips; "green ear" (florets converted to leafy structures); stunted plants; heavy spore production
• Management:
  • Metalaxyl seed treatment (Apron 35 SD): 6g per kg seed — most effective single management measure
  • Use resistant hybrids (HHB-67 has resistance genes)
  • Rogue and destroy infected plants early
  • Avoid volunteer pearl millet plants

Ergot (Claviceps fusiformis)

• Infects florets; replaced by honeydew ooze (sticky, amber-coloured liquid containing conidia) in early stage, followed by dark sclerotia (ergot bodies)
• Toxic alkaloids in ergot bodies — causes ergotism in humans and livestock
• Management: Wash seeds in 10% salt solution to remove ergot sclerotia before sowing; tolerant varieties; spray 0.1% thiram at 50% flowering; collect and destroy ergot bodies

Smut (Moesziomyces penicillariae)

• Gall smut; sori replace individual grains; brown sooty mass released
• Seed treatment with Carbendazim + Thiram; resistant varieties

Blast (Magnaporthe grisea): Leaf spots; spray Tricyclazole

Pests

• Stem borer (Coniesta ignefusalis): Tunnels into stem; Chlorpyrifos spray
• Shootfly: Early-stage dead heart; Seed treatment with imidacloprid

Harvesting

• Duration: 75–90 days (hybrid); longer for OPVs (85–95 days)
• Harvest stage: Dough to hard-dough stage (moisture ~25%); grain partially firm; ear heads harvested before full dryness to avoid shattering losses
• Method: Cut ear heads by sickle; pile and dry in sun 3–5 days; thresh by manual beating or mechanical thresher
• Stover used as valuable cattle feed (chopped and stored as straw)

Nutritional Value of Pearl Millet

Nutrient	Pearl Millet	Rice	Wheat
Protein (g/100g)	11–14	7–8	11–14
Iron (mg/100g)	8–11	0.7	3.9
Zinc (mg/100g)	3–5	1.1	2.7
Energy (kcal/100g)	362	345	346
Fibre (g/100g)	1.2–2.3	0.2	1.9

Dhanshakti biofortified variety: 71 ppm Fe — addressing anaemia in semi-arid zone populations.

Yield Potential

• Hybrid (HHB-67): 2.0–3.0 t/ha grain + 6–8 t/ha stover
• OPV: 1.5–2.0 t/ha grain

Pearl Millet Hybrids — Summary Table

Hybrid	Developer	Yield (t/ha)	Days to Maturity	Special Feature
HHB-67	CCSHAU, Hisar	2.5–3.0	75–80	Most popular; widely adapted; DM tolerant
HHB-197	CCSHAU, Hisar	2.8–3.2	78–82	Improved version of HHB-67
GHB-558	GAU, Junagadh	2.5–3.0	80	Gujarat-adapted; DM tolerant
Dhanshakti	ICRISAT/HarvestPlus	2.0–2.5	82–85	71 ppm Fe; biofortified; high zinc
MPMH-17	JNKVV, Jabalpur	2.5–3.0	80–85	MP-adapted; DM tolerant

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Summary Cheat Sheet

Area	Key Exam Point
Crop trait	Pearl millet is highly drought tolerant and climate-resilient
Production geography	Rajasthan leads Indian pearl millet cultivation
Key risks	Downy mildew, ergot, and moisture stress need early management

References

2 sources • [1] [2]

[1]

ICAR — Indian Council of Agricultural Research

Official

[2]

Department of Agriculture & Farmers Welfare, Government of India

Official