Groundnut — GYPSUM at pegging stage mandatory (pods absorb Ca directly from soil — unique!). Flowers above, fruits UNDERGROUND (geocarpic). Aflatoxin: dry to 9% in 4 days. Niacin 94% RDA highest food.
Groundnut — Pegging पर GYPSUM mandatory (pods directly soil से Ca absorb — unique!)। Flowers above, fruits UNDERGROUND (geocarpic)। Aflatoxin: 4 days में 9% dry करो। Niacin 94% RDA highest food।
⚡ Quick Reference / एक नज़र में
🌱 Sowing Season
Kharif June-July (main) | Rabi Oct-Nov South India | Summer Feb-March irrigated
⏱️ Harvest Time
90-130 days | Pull test 70% dark inner surface | Dry to 9% FAST (Aflatoxin prevention!)
🍽️ Edible Parts
Pods (roasted, boiled) + kernels (peanut butter, oil) + young leaves (tender) + groundnut oil
☀️ Light
Full sun — 8+ hours | Warm soil for pod development
💧 Water
500-700mm | 3-4 irrigations | Sandy loam for peg penetration | Aflatoxin risk if drought at pod fill
🌡️ Temperature
25-30°C | Frost sensitive | Full sun essential
Key Nutrition / पोषण
Protein 24-28g, Healthy fats 44-52%, Niacin 94% RDA (HIGHEST!), Resveratrol, Magnesium 40% RDA
Indian Kitchen Uses / भारतीय रसोई
Roasted peanuts (snack!), peanut butter, groundnut oil (premium!), chikki, gajak, peanut chutney
Groundnut (Arachis hypogaea) — Moongfali / Peanut / Mungfali — is India's most important food legume oilseed and one of the country's most beloved snack foods. India is the world's second largest groundnut producer after China, growing approximately 8-10 million tonnes annually across Gujarat (the largest producer — 40%+ of national output), Andhra Pradesh, Rajasthan, Tamil Nadu, Karnataka and Madhya Pradesh. Groundnut's extraordinary versatility distinguishes it from all other oilseeds: it is simultaneously a snacking food (roasted peanuts), cooking oil source (groundnut oil — most premium Indian cooking oil), protein food (peanut butter, protein meal), confectionery ingredient (chikki, gajak, laddoos), animal feed (peanut cake), and traditional Indian preparation (sundal, peanut chutney across South India). The crop's unique biology — it flowers above ground but fruits underground (geocarpic) — and its ability to grow in light sandy soils of Gujarat's Saurashtra makes it the crop that transformed the agricultural economy of western India.
Groundnut (Arachis hypogaea) — Moongfali — India का most important food legume oilseed। India = world का second largest producer। Gujarat = 40%+ national output! Flowers above ground, fruits underground (unique geocarpic!)। Snack + oil + protein + confectionery — most versatile oilseed। Groundnut oil = India का most premium cooking oil।
🥜 Overview, Classification & Varieties
| 🔬 Scientific Name | Arachis hypogaea — Spanish (bunch type) | Virginia (runner type) | Valencia |
| 📅 Season | Kharif (main) June-July | Rabi (South India) Oct-Nov | Summer (irrigated) Feb-March |
| 🌡️ Temperature | 25-30°C | Frost-sensitive | Full sun essential | Warm soil for pod development |
| 💧 Water | 500-700mm | Well-distributed | Sandy soil drainage critical | Peg penetration needs loose soil |
| ⏱️ Duration | Bunch: 90-110 days | Runner: 110-130 days |
| 🌾 Yield | Improved: 2.0-3.5 t/ha pods | Oil: 44-52% | Protein: 24-28% |
| Variety | Type | Specialty | Region |
|---|---|---|---|
| 🥜 GG-20 | Bunch — Spanish | Gujarat gold standard — 90-100 days, high oil, drought tolerant. Saurashtra dominant. | Gujarat, Rajasthan |
| 🥜 TAG-24 | Bunch | ANGRAU — AP standard, early (95-100 days), good yield, multi-disease resistant | AP, Telangana, Karnataka |
| 🥜 M-13 | Bunch | TNAU — Tamil Nadu standard, drought tolerant, good for light soils | Tamil Nadu |
| 🥜 Girnar-3 | Runner | NRCG Junagadh — high yield, large pods, good for premium market | Gujarat, Rajasthan |
| 🥜 ICGV-86031 | Bunch | ICRISAT — high yield, Tikka disease resistant, Alfatoxin resistant | Pan-India |
🪴 Soil, Sowing & Nutrient Management
Soil — Sandy Loam Essential
Sandy loam to loamy sand — pH 6.0-7.0. CRITICAL: loose, friable soil for peg penetration and pod development. After flowering, the gynophore (peg) grows downward into soil — hard or clay soil prevents peg entry and drastically reduces yield. Deep plowing (30 cm) is non-negotiable for groundnut. Gypsum application (calcium sulfate) at pegging stage: critical for pod fill in calcium-deficient soils. Calcium directly absorbed by developing pods from soil contact — foliar spray doesn't work. Black cotton soil: not ideal — too heavy for pod penetration. Gujarat's sandy soils: naturally perfect.
Sowing — Precision Required
Kharif: June 15 — July 10. Pre-monsoon sowing with soil moisture (tikhur): possible in Gujarat on first rain. Seed rate: 80-100 kg/ha (in-shell pods) or 60-70 kg/ha (kernels). Shell pods before sowing — remove outer shell, keep seed coat intact. Spacing: 30 cm × 10 cm (bunch) | 45 cm × 15 cm (runner). Depth: 4-5 cm. Rhizobium (Arachis-specific — Bradyrhizobium) + Thiram seed treatment. Do NOT damage seed coat while shelling — seed coat damage causes poor germination and disease entry.
Fertilizer — Calcium Critical!
N: 20-25 kg/ha starter only — Rhizobium fixes 40-60 kg N/ha. P: 40-60 kg P₂O₅ — full at sowing. K: 30-40 kg K₂O. Calcium (MOST IMPORTANT unique requirement): Apply gypsum (CaSO₄) @ 250-500 kg/ha at PEGGING STAGE (35-40 days). Calcium absorbed directly by pods from soil — not through roots. Soil calcium deficiency = empty pods (pocha moongfali). Sulphur: 30-40 kg/ha from gypsum application (sulphur also benefits oil quality). Zinc: 25 kg ZnSO₄ if yellowing between veins. Boron: 0.5 kg/ha for pod set.
Aflatoxin — Critical Risk
Aflatoxin contamination: Aspergillus flavus mold produces aflatoxin in groundnut — most dangerous natural food contaminant (potent liver carcinogen). Conditions for aflatoxin: drought stress at pod fill + temperature above 32°C + soil moisture below 30% for extended period. Prevention: (1) Avoid drought stress at R5-R7 stage (most critical). (2) Harvest on time — over-mature pods crack, moisture entry promotes mold. (3) Dry pods to ≤9% moisture within 3-4 days of harvest. (4) Store in clean dry conditions — fumigated stores. (5) Use ICGV-86031 variety (Aflatoxin resistance bred in). (6) Never sell visibly damaged/discolored/shriveled pods — these likely contain high Aflatoxin. EU and US reject Indian groundnut exports for Aflatoxin — affects premium export market significantly. Testing: KVKs have Aflatoxin test kits.
🌿 Crop Protection & Management
⚡ Key Pests & Diseases
🍂 Tikka (Leaf Spot)
Early + Late Cercospora
Mancozeb spray — most common disease
🌿 Rust
Puccinia arachidis
Mancozeb or Propiconazole
🐛 Thrips
Frankliniella schultzei — bud necrosis
Imidacloprid spray — virus vector
🐛 Leaf Miner
Aproaerema modicella
Monocrotophos or Quinalphos
🦠 Bud Necrosis
TSWV — thrips transmitted
Control thrips vector + resistant variety
🌱 White Grub
Holotrichia — soil grub
Chlorpyrifos soil drench
| Tool / Resource | Use for Groundnut |
|---|---|
| 📅 Crop Sowing Calendar | Three-season groundnut windows — Gujarat, AP, TN specific dates |
| 🧪 Fertilizer Calculator | Gypsum (calcium) at pegging stage — timing and dosage |
| 🔍 Pest Identifier | Tikka vs rust — leaf spot identification for correct spray |
| 💧 Watering Calculator | Critical irrigation at pegging + pod fill (Aflatoxin prevention) |
| 🌱 Soil Mix Calculator | Sandy loam mix preparation for pod penetration |
🥜 Harvest, Nutrition, Uses & Economics
- Harvest at physiological maturity — pull test: 90-130 days. Leaves yellow and drop, inner pod surface turns dark. Pull test: uproot plant — 70-75% pods showing dark inner surface = harvest time. Mechanical digger-shaker: lifts plants, shakes pods free — widely used in Gujarat. Hand-picking from uprooted plants: small farms. Dry pods in sun 3-5 days to reduce moisture from 35% to ≤9%. Critical: quick drying prevents Aflatoxin. MSP 2024-25: Rs.6,783/quintal (pods). Market often 10-20% above MSP in Gujarat's Rajkot mandi — India's largest groundnut market.
| Nutrition (per 100g dry roasted) | Value | Note |
|---|---|---|
| 💪 Protein | 24-28g | Complete protein with all essential amino acids |
| 🫙 Fat | 44-52g (healthy fats) | Oleic acid (like olive oil), linoleic — cardiovascular friendly |
| 🌿 Niacin (B3) | 15mg — 94% RDA | Highest niacin food! Brain, energy metabolism |
| 🦴 Magnesium | 170mg — 40% RDA | Muscle, nerve, blood sugar |
| 🌿 Resveratrol | Significant (skin) | Same antioxidant as red wine — cardiovascular |
| 🔥 Calories | 567 kcal | Energy dense — calorie-rich healthy snack |
❓ FAQ
Gypsum (calcium sulfate) in groundnut — the unique science: The problem: developing groundnut pods cannot absorb calcium through the roots and transport it to pods (calcium is poorly mobile in plants). The pod must absorb calcium directly from soil moisture surrounding it. How pods absorb calcium: when the gynophore (peg) enters soil and pod forms underground, the pod hull directly absorbs calcium dissolved in soil water. Soil calcium must be immediately available in the pod zone (top 5-10 cm). Calcium deficiency symptoms: "pops" or "blind seeds" — pods with no seed inside, or poorly developed seeds. Very common in light sandy soils of Gujarat, Rajasthan after multiple groundnut crops. Gypsum application: 250-500 kg/ha broadcast at pegging stage (30-35 days after sowing) when first pegs are entering soil. Timing is CRITICAL — must be applied before pods form underground, not after. Gypsum also provides sulfur (32% S) — improves oil quality. Does not change soil pH (unlike lime) — safe for slightly acidic soils. Quick demonstration: grow groundnut in two pots — one with gypsum at pegging, one without. After harvest: count filled pods. The difference is dramatic — farmers who see this demonstration adopt gypsum immediately. Cost: Rs.500-800/ha for gypsum. Benefit: 15-25% more filled pods. One of agriculture's highest ROI inputs.
Groundnut oil's premium status — the science: Fatty acid composition: Oleic acid (monounsaturated, Omega-9): 40-50% — same as olive oil. Linoleic acid (polyunsaturated, Omega-6): 30-35%. Saturated: 15-20%. This profile: cardiovascular neutral/beneficial, high smoke point, stable for frying. Smoke point: 232°C (refined) — highest common cooking oil in India. Rice bran oil: 254°C, but groundnut: 232°C — both excellent for Indian high-heat cooking. Flavor: characteristic roasted groundnut aroma — enhances Indian dishes uniquely. This flavor is why many South Indian and Gujarat dishes specifically need groundnut oil. Comparison: Soybean oil: cheaper, neutral flavor, but more unstable at high heat. Sunflower oil: neutral, cheaper. Mustard oil: strong pungent flavor, lower smoke point. Groundnut oil: balanced flavor, high smoke point, good fatty acid profile. Health credentials: Harvard studies show groundnut consumption associated with lower cardiovascular disease risk — the oleic acid and resveratrol content. Filter groundnut oil (cold-pressed, traditional) vs refined: Filter/Chekku oil retains more flavor, more antioxidants, more vitamin E, slightly lower smoke point. Premium market: cold-pressed filter groundnut oil Rs.250-350/litre vs refined Rs.140-180/litre. Growing consumer preference for cold-pressed = farmer opportunity.
Gujarat Kharif groundnut farming (Saurashtra model): (1) Variety: GG-20 (90-100 days, drought tolerant, high oil) or Girnar-3. Certified seed from GSSC or KVK Junagadh. (2) June 15-July 5 sowing (wait for good monsoon rain 30mm in 2-3 days). (3) Soil preparation: deep plow 30 cm, 2 cross-harrowings for fine tilth. Critical for peg penetration. (4) Seed: shell pods 1-2 days before sowing, keep seed coat intact. Don't shell weeks in advance — deteriorates. (5) Seed treatment: Bradyrhizobium + Thiram 3g/kg. (6) Sowing: 30 × 10 cm spacing, 4-5 cm depth. Seed rate: 80-100 kg/ha. (7) Fertilizer at sowing: SSP 2 bags/bigha (P + S + Ca). Zero urea. (8) GYPSUM at pegging (35 days): 250-300 kg/ha broadcast — MOST IMPORTANT step! (9) Tikka disease: Mancozeb spray at 30 days and 60 days preventively. (10) Irrigation: 3-4 critical irrigations in poor monsoon year. (11) Harvest: 95-100 days — pull test 70% dark inner surface. (12) Mechanical digger-shaker harvesting. (13) Sun-dry to <9% moisture within 4 days. (14) Sell: Rajkot APMC mandi — India's largest groundnut market. Or direct to oil mill. Economics: Input Rs.18,000-25,000/ha. Revenue at 2.5t × Rs.6783: Rs.1,69,575. Net: Rs.1,44,000-1,51,000/ha. One of Gujarat's most profitable Kharif crops in good monsoon years.
Homemade natural peanut butter: Ingredients: 500g raw peanuts (groundnuts). Optional: 1/4 tsp salt, 1 tsp honey. Method: (1) Dry roast peanuts in heavy pan on medium heat — 8-10 minutes, stirring constantly. Color: light golden. Aroma: roasted. Cool completely. (2) Remove skins: rub peanuts in kitchen towel, blow away loose skins. Skin removal optional — skin contains more antioxidants (resveratrol). (3) Food processor: blend roasted peanuts. Stage 1 (30 seconds): coarse powder. Stage 2 (1-2 minutes): paste forms. Stage 3 (2-3 minutes): creamy butter as natural oils release. No added oil needed — peanuts have 45-50% natural oil. (4) Add salt + honey at this stage if desired. (5) Jar and refrigerate. Shelf life: 1 month refrigerated. Natural peanut butter vs commercial: Commercial: added palm oil (prevents separation), sugar, hydrogenated fats. Home: zero additives. Natural peanut butter separates (oil on top) — natural and expected. Stir before use. Cost: 500g peanuts Rs.60-80 → 400-420g peanut butter. Market: Rs.250-400 for 400g. Home: 4-5x cheaper and superior quality. Nutrition of home peanut butter: protein 24-28%, healthy fats 45%, niacin 94% RDA, magnesium 40% RDA — genuinely one of the best value whole foods available. Best for: morning toast, sports nutrition, children's school snack, post-workout protein.
Peanut allergy — India's growing concern: Peanut allergy mechanism: immune system misidentifies peanut proteins (Ara h 1, 2, 3) as threats, produces IgE antibodies, subsequent exposure triggers allergic reaction. Severity range: Mild: hives, itching, nasal congestion. Moderate: vomiting, diarrhea, abdominal pain. Severe (anaphylaxis): throat swelling, breathing difficulty, blood pressure drop, loss of consciousness — potentially fatal. Time to reaction: within 15-30 minutes of exposure. Anaphylaxis: within minutes. Recognition signs of serious reaction: throat tightening/swelling, difficulty breathing or swallowing, severe drop in blood pressure, pale/blue skin, rapid weak pulse, dizziness, loss of consciousness. Emergency action: Epinephrine (adrenaline) auto-injector (EpiPen) — if prescribed, use immediately. Call ambulance — even after EpiPen (biphasic reaction possible). Never delay seeking emergency care. India prevalence: lower than West (0.5-1% vs 2-3%) but increasing with urbanization and food environment changes. Cross-reactivity: tree nut allergy does NOT necessarily mean peanut allergy (peanuts are legumes, not nuts). Test separately. Hidden sources: peanut oil in many restaurant foods, peanut in chikki, peanut chutney, peanut namkeen. Always read labels. Inform restaurants. If diagnosed: carry EpiPen always, wear medical alert bracelet, inform all caregivers. Allergy testing: RAST blood test or skin prick test by allergist — do not self-diagnose.