Watermelon (Tarbooz)
Citrullus lanatus
A hot-season vine grown for a big, sweet summer fruit — on river-bed sand in eastern Uttar Pradesh, Bihar and West Bengal, and on drip-and-mulch beds in the peninsula — where the crop's price is made in the last two or three weeks by hot, bright, rain-free weather and by cutting off water as the fruit ripens, and where the melon fruit fly is the pest that decides how much of the crop is actually sellable.
Quick Summary
The key points from this page in about two minutes — read it or have it read aloud.
Quick Summary
Watermelon (tarbooz) is a warm-season, trailing vine grown for its large, sweet, thirst-quenching fruit. It is a summer crop: sown from November to March so it ripens in the April–June heat, before the monsoon. India grows it on river-bed (diara) sand along the Ganga, Yamuna, Gandak and Kosi in Uttar Pradesh, Bihar and West Bengal, and increasingly on raised beds with drip irrigation and plastic mulch in Karnataka, Andhra Pradesh, Tamil Nadu, Maharashtra and Rajasthan.
The crop lives on heat and sun. It needs a long, warm, dry spell to build sugar, and the last two to three weeks before harvest decide the price — hot, bright, rain-free weather makes a sweet, dark-fleshed melon, while cloud, rain or heavy irrigation at that stage makes a pale, watery, low-sugar fruit that splits and does not travel. Cutting back water as the fruit reaches full size is one of the most important decisions in the whole crop.
The melon fruit fly is the pest that matters most. The female stings young fruit to lay eggs, the maggots feed inside, and the fruit rots on the vine. It has to be managed from fruit set with traps and bait, not sprayed after damage shows. The red pumpkin beetle can destroy a seedling stand in days and needs watching from germination. Fusarium wilt builds up in the soil where watermelon or other cucurbits are grown too often, so rotation and a resistant variety matter.
Otherwise watermelon is an easy, fast crop — 75–100 days from sowing to first harvest, a light feeder, and a good fit for warm, sandy, free-draining land that many other crops find too poor.
- Crop type
- Warm-season annual trailing vine (fruit)
- Season
- Summer crop; sown Nov–Mar, harvested Apr–Jun
- Suitable states
- Uttar Pradesh, Bihar, West Bengal, Karnataka, Andhra Pradesh, Rajasthan
- Growing duration
- 75–100 days from sowing to first harvest
- Water requirement
- Regular during vine and fruit growth; cut off as fruit ripens
- Temperature
- Hot, 24–35°C; frost-killed, poor set and sugar below 18°C
- Soil type
- Light, warm, deep, well-drained sandy loam or river alluvium, pH 6.0–7.5
- Difficulty level
- Easy (melon fruit fly, red pumpkin beetle, Fusarium wilt)
- Expected yield
- 20–35 t/ha (open-pollinated); 40–60 t/ha (hybrids)
- Key risk
- Rain or heavy watering in the last 2–3 weeks — pale, watery, splitting fruit
Overview
Watermelon, or tarbooz (Citrullus lanatus), is a warm-season trailing vine grown for its large, sweet fruit. It is a summer crop, sown from November through March so that the fruit fills and ripens in the dry pre-monsoon heat of April to June. India grows it in two main ways: on river-bed (diara) sand along the Ganga, Yamuna, Gandak, Kosi and other rivers in Uttar Pradesh, Bihar and West Bengal, using the residual moisture in the sand; and as a main-field crop on ridges or raised beds, now usually with drip irrigation and plastic mulch, across Karnataka, Andhra Pradesh, Tamil Nadu, Maharashtra, Odisha and Rajasthan.
The crop needs heat, strong sunlight and a long dry ripening spell. Growth is best at 24–35°C; the vine is killed by frost and stalls in cool, cloudy weather. The single most weather-sensitive period is the last two or three weeks before harvest — hot, bright, rain-free conditions build the sugar and colour that fetch a price, while rain, cloud or heavy watering then produce a pale, watery, cracked, low-value fruit.
Two pests decide much of the outcome. The melon fruit fly stings young fruit to lay its eggs and the maggots rot the fruit from inside; it must be trapped and baited from fruit set. The red pumpkin beetle can strip a seedling stand within days of germination. Fusarium wilt, a soil-borne fungus, builds up wherever cucurbits are grown too often, so a 3–4 year rotation and a wilt-resistant variety such as Arka Manik are worth planning for.
Crop timeline, sowing to harvest
A quick visual map of the season — jump to any section below for the detail behind each stage.
- Day 0
Sowing
Seed sown 2–3 cm deep in pits or on the ridge shoulder; river-bed crop November–January, main-field crop January–March. Seed is often pre-germinated in warm, moist cloth for a faster stand.
- Day 5–10
Germination
Seedlings emerge in 5–10 days in warm soil; the red pumpkin beetle attacks from the cotyledon stage and must be watched from day one.
- Day 20–35
Vine growth
The vine runs and branches; this is the main water and nitrogen demand period. Weeding and vine training are done before the canopy closes.
- Day 35–50
Flowering
Yellow male flowers open first, then female flowers with a tiny fruit behind them; bees do the pollination, so the field must not be sprayed with insecticide during flowering hours.
- Day 45–75
Fruit development
Fruit set and swell rapidly; steady water and a potassium top-dressing now build size. Fruit fly stings young fruit through this stage.
- Day 75–100
Ripening & harvest
Water is cut back so the last two to three weeks are dry, concentrating the sugar; fruit is cut when the ground spot turns cream-yellow and the tendril nearest the fruit dries.
Suitable states
States where this crop is grown at scale, highlighted below. Your local Krishi Vigyan Kendra is still the final word for your specific block.
- Jammu and Kashmir
- Himachal Pradesh
- Punjab
- Uttarakhand
- Haryana
- Delhi
- Uttar Pradesh
- Rajasthan
- Bihar
- Jharkhand
- West Bengal
- Sikkim
- Assam
- Arunachal Pradesh
- Meghalaya
- Nagaland
- Manipur
- Mizoram
- Tripura
- Gujarat
- Madhya Pradesh
- Chhattisgarh
- Maharashtra
- Odisha
- Goa
- Telangana
- Andhra Pradesh
- Karnataka
- Kerala
- Tamil Nadu
- Puducherry
- Ladakh
- Chandigarh
- Lakshadweep
Grown here
Climate requirements
Everything about the crop calendar is aimed at ripening the fruit in hot, bright, rain-free weather — a melon that matures under cloud or in the first monsoon showers loses the sweetness the whole crop is grown for.
Ideal temperature
A hot-season crop that grows best at 24–35°C, with plenty of bright sun. Below about 18°C the vine barely grows and fruit set and sugar are poor; frost kills it outright. Fruit ripening in genuine summer heat is what makes a sweet, dark-fleshed melon.
Rainfall
Grown in the dry season on irrigation or river-bed moisture. Rain during flowering causes poor pollination and fruit drop; rain or high humidity during ripening causes cracking, low sugar, fungal fruit rot and a fruit that will not travel — which is why the crop is timed to finish before the monsoon.
Humidity
Low humidity suits it. Humid, overcast spells bring on downy mildew, powdery mildew, anthracnose and gummy stem blight and spoil fruit quality.
Sunlight
Full, strong sun. Watermelon shaded by weeds or a taller crop makes long vine and small, pale, low-sugar fruit.
Soil requirements
River-bed sand looks like poor land but is close to ideal for watermelon — it is warm, bottomless for the roots, drains instantly, and holds sub-surface moisture the deep taproot can reach all season.
Suitable soil
Light, warm, deep, free-draining soil — sandy loam, loamy sand and river-bed alluvium are ideal because they warm up fast in spring, drain well, and let the taproot go deep to find moisture. Heavy clay stays cold and wet, delays the crop and rots the vine base.
pH range
Best at pH 6.0–7.0; tolerates up to about 7.5. Strongly acid or saline soils cut yield and sugar.
Drainage
Free drainage is essential; the vine base and roots rot quickly in wet soil. On heavier land the crop must be grown on ridges or raised beds.
Organic matter
Moderate. A basal dose of well-rotted farmyard manure improves the light soils the crop favours, but watermelon is not a heavy feeder and too much nitrogen grows vine at the expense of fruit.
Land preparation
Same four steps whichever region you are in — only the timing shifts with the sowing window.
- 1
Prepare pits or beds
For the river-bed crop, dig planting pits about 60–75 cm across and 45 cm deep down to moist sand, spaced along the row. For the main-field crop, form ridges or raised beds 2–3 m apart, or channels for a spreading vine layout.
- 2
Fill with manure and basal fertiliser
Mix 4–5 kg well-rotted farmyard manure plus a handful of NPK and single super phosphate into each pit, or spread 15–20 t/ha of FYM across a main field before bed-forming.
- 3
Lay drip and mulch (main-field crop)
On beds, lay the drip line and, where used, plastic mulch before sowing — the mulch warms the soil, saves water, keeps the fruit clean and cuts weeding sharply.
Seed information
How the main varieties compare, so you can pick by duration, yield, disease pressure or what you are growing for.
| Variety | Duration | Yield | Disease resistance | Best state | Suitable for |
|---|---|---|---|---|---|
The most widely grown open-pollinated watermelon in India — small, round, very dark green, thin-rinded fruit of 3–5 kg with deep red, sweet, crisp flesh. Early and reliable, but the thin rind bruises and does not travel far, so it suits nearer markets. | First harvest ~85–95 days | 20–30 t/ha | No special resistance; standard wilt and mildew watch | Grown across India | Local and regional fresh market, early crop |
An IIHR (Bengaluru) open-pollinated variety resistant to anthracnose, powdery mildew and downy mildew, with round, dull-green fruit with dark stripes, 5–7 kg, deep red flesh and a firm rind that stores and travels well. | First harvest ~95–100 days | 45–60 t/ha | Resistant to anthracnose, powdery mildew and downy mildew | Karnataka, Andhra Pradesh, Tamil Nadu, Maharashtra | Distant markets, disease-prone areas, long transport |
An IIHR dwarf, short-vine variety bred for close, high-density planting — round, small, sweet fruit of about 2.5–3 kg on a compact plant that fits raised-bed drip systems and small plots. | First harvest ~80–90 days | 35–45 t/ha at high density | Moderate; check local wilt pressure | Southern and western India, protected and small-plot growers | High-density drip beds, small fruit for single-serve market |
A classic IIHR F1 hybrid — round, light-green fruit with dark stripes, 6–8 kg, bright red flesh with good keeping quality; one of the first Indian watermelon hybrids and still widely grown. | First harvest ~95 days | 35–45 t/ha | No special resistance claimed | Karnataka, Andhra Pradesh, Maharashtra | Commercial fresh market, medium-to-distant transport |
A high-yielding F1 hybrid (IIHR / private lines) with large oval fruit of 10–12 kg, deep pink-red flesh and a tough, well-striped rind built for long-distance transport; the standard big-melon commercial hybrid in many states. | First harvest ~90–95 days | 45–55 t/ha | No special resistance claimed | Grown across India as a commercial hybrid | Large-scale commercial fields, long-distance market |
A Rajasthan (Durgapura) selection for hot, arid conditions — round to oval fruit with sweet red flesh, grown across the dry north-west and in river-bed plantings where a hardy open-pollinated type is wanted. | First harvest ~90 days | 25–35 t/ha | Hardy in dry heat; standard cucurbit disease watch | Rajasthan, Haryana, western Uttar Pradesh | Arid and river-bed cultivation, hardy open-pollinated seed |
An IARI triploid seedless watermelon — round to oval fruit with pink-red, seedless flesh, grown for the premium urban market. Needs a normal (diploid) variety planted alongside as a pollen source to set fruit. | First harvest ~95–100 days | 25–35 t/ha | No special resistance claimed | Peri-urban commercial farms | Premium seedless fresh market; needs a pollenizer row |
Namdhari NS 295 / private F1 hybrids Widely grown private F1 hybrids (Namdhari, Nunhems, Syngenta and others) with oval, dark-striped fruit of 6–10 kg, bright red firm flesh and rinds bred for transport — the mainstay of large commercial fields when a specific local hybrid is recommended. | First harvest ~85–95 days | 40–55 t/ha | Varies by hybrid; several carry field tolerance to wilt or mildew | Commercial belts nationwide | Large commercial fields where a company hybrid is locally proven |
- Seed rate
- 2.5–3.5 kg/ha for open-pollinated varieties; 400–600 g/ha for F1 hybrids and about 500 g plus a pollenizer for seedless triploids. On an acre, roughly 1–1.5 kg for open-pollinated and 200–300 g for a hybrid.
- Certified seed
- Buy certified or company seed of a named variety or hybrid from a reputable source. For seedless (triploid) watermelon, plant a diploid variety in about one row in four (or one plant in three) as a pollen source, or no fruit will set. In wilt-prone soil, choose a resistant variety or grafted seedlings on bottle-gourd rootstock.
- Spacing
- Rows or beds 2–3 m apart; plants 0.6–1 m apart in the row, or 2–3 plants per pit at 2 × 2 m in the river-bed method. Dwarf types like Arka Muthu are planted closer.
- Seed treatment
- Soak seed for 12–24 hours and, for a faster stand in cool early-season soil, sprout it in warm moist cloth before sowing. Treat with a fungicide such as thiram or carbendazim against damping-off, and with imidacloprid seed dressing to hold back the red pumpkin beetle at the seedling stage.
Sowing guide
A pre-germinated seed placed into warm, moist soil gets the seedling up and past the red-pumpkin-beetle window faster — a slow, cool-soil stand is the one that beetles thin out.
- Best time
- River-bed crop: November to January, as the flood water recedes, for harvest in March–May. Main-field crop: January to March in the plains, for harvest in April–June before the monsoon. Peninsular India also has a post-monsoon crop.
- Row spacing
- 2–3 m between rows or beds
- Plant spacing
- 0.6–1 m in the row, or 2–3 plants per pit
- Sowing depth
- 2–3 cm; a little deeper in dry river-bed sand to reach moisture
- Method
- Dibble 2–3 seeds per hill or pit, then thin to the 2 strongest seedlings after 12–15 days. In the river-bed method the seed goes into a pit dug down to moist sand so the crop can run largely on that stored moisture.
Fertilizer schedule
A split dose beats one large dose applied at sowing — nitrogen especially is lost to the air and to leaching if it all goes in on day one.
- 1
Basal (at sowing)
Day 0
15–20 t/ha FYM plus about one-third of the nitrogen and the full phosphorus and potassium — a common dose is 30–40 kg N, 50–60 kg P₂O₅ and 50–60 kg K₂O per hectare, placed near the pit or along the bed.
- 2
Vine growth
20–25 days after sowing
About one-third of the nitrogen as the vine starts to run; on drip, this is split into weekly fertigation doses through the vegetative stage.
- 3
Fruit development
40–50 days after sowing
The remaining nitrogen plus an extra dose of potassium (for example potassium sulphate or MOP, or foliar KNO₃) as fruits set and swell — potassium at this stage is what drives fruit size and sugar. Stop nitrogen once fruits are near full size.
Irrigation schedule
1. Establishment
Day 0–20
Light, frequent water to establish the seedlings; the river-bed crop draws on sub-surface sand moisture and is watered only if that runs short.
2. Vine growth and flowering
Day 20–50
Regular irrigation every 5–8 days (or steady drip) through vine growth and flowering; water stress now reduces the number of fruits set.
3. Fruit development to ripening
Day 50 onward
Keep water steady while fruits are swelling, then reduce it and stop 7–12 days before harvest. A dry finish concentrates the sugar; watering right up to harvest gives a bland, watery, split fruit.
Critical stages
- Flowering and fruit set
- Fruit swelling (steady water)
- Final ripening (dry finish)
Water-saving tips
- Drip irrigation with plastic mulch is now standard on commercial watermelon — it cuts water use by a third or more, keeps the fruit clean and off wet soil, and lets fertiliser be spoon-fed through the season.
- The river-bed pit method uses almost no applied water: the pit reaches moist sand and the deep taproot follows the falling water table down through the season.
- The most valuable water decision is to stop early — the last 1–2 weeks should be dry, both to build sugar and to stop the fruit cracking.
Weed management
Common weeds
Organic control
- Two hand-weedings before the vines cover the ground — at about 15–20 and 35 days — handle most of the weed pressure; once the vine mat closes it suppresses later weeds itself.
- Straw or plastic mulch on the bed suppresses weeds, conserves moisture and keeps the developing fruit off damp soil where it would rot.
- Pull out any wild or volunteer cucurbits nearby — they host the same fruit fly, mildews and viruses and keep the pressure on the crop high.
Chemical control
- A pre-emergence herbicide cleared for cucurbits, applied to the bed before the vines run, controls early weeds; after that the crop is hand-weeded because the sprawling vine cannot be sprayed over.
- Plastic mulch removes almost all in-row weeding; confirm any herbicide for the inter-row with your KVK.
Nutrient deficiency identification
What a shortage of each nutrient actually looks like on the plant, so you can tell a deficiency apart from a disease before you spray the wrong thing.
Potassium
Visible symptom
Scorched leaf margins on older leaves and small, pale-fleshed, low-sugar fruit with poor keeping quality — the most yield- and quality-limiting deficiency in watermelon.
Boron
Visible symptom
Poor fruit set, corky or cracked areas on the fruit, and a hollow or discoloured heart; common on sandy, alkaline or leached soils.
Magnesium
Visible symptom
Yellowing between the veins of older leaves, spreading up the vine during heavy fruit load, on light sandy soils.
Diseases to watch for
Symptoms, likely cause and what actually treats it — not just a spray name.
Fusarium wilt
- Symptoms
- Sudden wilting of a runner or the whole vine, often on one side first, with yellowing lower leaves and a brown streak in the split stem near the base; plants collapse as the fruit is filling.
- Cause
- The soil fungus Fusarium oxysporum f. sp. niveum, which survives for years in the soil and builds up wherever watermelon or other cucurbits are grown too often.
- Treatment
- No cure for an infected plant; remove and destroy it. Soil drenching with a bio-agent (Trichoderma) around healthy plants can slow spread.
- Prevention
- A 3–4 year rotation away from cucurbits, a wilt-resistant variety such as Arka Manik, grafting onto bottle-gourd or pumpkin rootstock on badly infested land, and good drainage.
Anthracnose
- Symptoms
- Dark, sunken, water-soaked spots on leaves, stems and fruit; on the fruit the spots enlarge into circular, sunken, cracked lesions with pink spore masses in wet weather, and the fruit rots.
- Cause
- The fungus Colletotrichum orbiculare, spread by rain splash and favoured by warm, humid, wet weather.
- Treatment
- A protective mancozeb, chlorothalonil or copper spray from the first spots, repeated in wet weather, observing the pre-harvest interval.
- Prevention
- Disease-free seed, a resistant variety (Arka Manik), crop rotation, wider spacing for airflow, and avoiding work in the field when the vines are wet.
Downy and powdery mildew
- Symptoms
- Downy mildew: angular yellow patches on the upper leaf with a grey-purple mould underneath, in humid weather. Powdery mildew: white powdery patches on both leaf surfaces, in warm dry weather. Both defoliate the vine and expose the fruit to sun-scald.
- Cause
- Pseudoperonospora cubensis (downy) and Podosphaera / Erysiphe fungi (powdery), the two most common leaf diseases of cucurbits.
- Treatment
- A downy-specific fungicide for downy mildew and wettable sulphur or a recommended fungicide for powdery mildew, started at first symptoms.
- Prevention
- Resistant varieties where available (Arka Manik), adequate spacing, avoiding dense nitrogen-pushed growth, and drip rather than overhead irrigation.
Bacterial fruit blotch
- Symptoms
- Small water-soaked spots on seedling leaves, and dark green, greasy, spreading blotches on the upper surface of the fruit that later crack and ooze; the flesh underneath rots.
- Cause
- The seed-borne bacterium Acidovorax citrulli; a single infected seed lot can start an outbreak that ruins a field.
- Treatment
- No effective cure in the field; remove affected fruit and plants, and a copper spray from early fruit set can slow spread in a wet season.
- Prevention
- Use tested, certified seed from a reputable source, avoid overhead irrigation, do not work in wet fields, and rotate away from cucurbits.
Pests to watch for
What to look for before the damage is visible, and organic options before you reach for a chemical.
Melon fruit fly
- Identification
- A brownish fly a little larger than a housefly that stings young fruit to lay eggs, leaving a small puncture and often a drop of gum; the fruit then develops a soft, brown, maggot-filled rot and drops.
- Damage
- The single most damaging pest of watermelon — losses of a third to a half of the fruit are common where it is not managed from fruit set.
- Organic control
- Cue-lure or methyl-eugenol pheromone traps and protein-bait spots from the start of flowering, prompt collection and deep burial of all stung and fallen fruit, ploughing the field after harvest to expose pupae, and bagging individual fruit on small plots.
- Chemical control
- Bait sprays (a protein hydrolysate plus a small dose of insecticide) applied as spots rather than a full cover spray, from fruit set; avoid spraying open flowers so bees are not harmed.
Red pumpkin beetle
- Identification
- Bright orange-red beetles about 6–8 mm long that feed on the cotyledons and young leaves, cutting round holes; the grubs feed on roots and on fruit lying on the soil.
- Damage
- Can destroy a seedling stand within a few days of germination, and grub damage scars fruit that touches the ground.
- Organic control
- Cover seedlings with net or a light cloth until they have 4–5 true leaves, hand-collect beetles in the early morning when they are sluggish, dust with ash or neem, and delay sowing past a known beetle peak where possible.
- Chemical control
- Seed treatment with imidacloprid, and a foliar insecticide at the cotyledon-to-2-leaf stage if beetles are numerous.
Aphids
- Identification
- Colonies of small green, yellow or black soft-bodied insects on the growing tips and the underside of young leaves, with sticky honeydew and curled leaves.
- Damage
- Sap loss stunts young vines, but the real damage is that aphids carry watermelon mosaic and cucumber mosaic virus, which mottle and distort the leaves and give small, bumpy, unmarketable fruit.
- Organic control
- Reflective plastic mulch to deter incoming aphids, neem sprays, and conserving ladybird beetles and lacewings; remove nearby weed and volunteer-cucurbit hosts.
- Chemical control
- A recommended systemic insecticide when colonies build up early, especially near virus-source fields, rotated between groups.
Leaf-eating and sap-sucking complex
- Identification
- Epilachna (hadda) beetles skeletonising leaves, leaf miner trails, thrips causing silvery leaf patches, and mites causing fine stippling and bronzing in hot dry spells.
- Damage
- Together these reduce the leaf area that fills and sweetens the fruit; thrips and mites flare fast in the pre-monsoon heat.
- Organic control
- Regular scouting, neem-based sprays, yellow and blue sticky traps for thrips, and preserving natural enemies by keeping broad-spectrum sprays to a minimum.
- Chemical control
- A specific product for the pest that crosses the threshold — an acaricide for mites, not a general insecticide — always observing the short pre-harvest interval on a fruit picked continuously.
Common mistakes to avoid
The mistakes that cost growers the most, ranked by how often they show up in the field — not in the order you might expect.
- 1
Watering right up to harvest.
Why it hurts
Water in the last one to two weeks makes the fruit take up water fast — it comes out pale, watery, low in sugar and prone to splitting on the vine or in transit. A dry finish is what makes a sweet, saleable melon.
- 2
Waiting for fruit-fly damage before acting.
Why it hurts
By the time stung fruit shows soft rot, the fly is well established and a large share of the crop is already lost. Traps, bait and sanitation have to start at flowering and fruit set, not after damage appears.
- 3
Leaving seedlings unprotected from red pumpkin beetle.
Why it hurts
Beetles can clear a newly emerged stand in a few days. Seed treatment plus a net or cloth cover until 4–5 true leaves is cheap insurance against having to re-sow.
- 4
Growing watermelon on the same land year after year.
Why it hurts
Fusarium wilt and root-knot nematode build up in the soil and start collapsing the vines just as the fruit fills. A 3–4 year rotation away from all cucurbits, or a resistant/grafted crop, is essential on repeat land.
- 5
Over-feeding nitrogen.
Why it hurts
Heavy nitrogen grows a lush vine with few fruit, delays maturity, and makes soft growth that mildew and fruit fly love. Watermelon needs modest nitrogen and generous potassium, especially at fruit development.
- 6
Cutting fruit by guessing instead of checking maturity signs.
Why it hurts
An under-ripe melon never sweetens after cutting and an over-ripe one goes mealy and cracks; check the cream-yellow ground spot, the dried tendril nearest the fruit, and the dull thump before cutting.
Harvesting
Cut fruit at full maturity, 75–100 days after sowing depending on variety, using the maturity signs rather than a fixed date. Harvest in the cool of the morning and handle the fruit gently — a dropped or dropped-on melon cracks internally even if the rind looks fine.
Signs it is ready
- The ground spot (where the fruit sat on the soil) has turned from white to cream or buttery yellow
- The curly tendril nearest the fruit stalk has dried and browned
- A dull, hollow thump when the fruit is tapped, not a sharp ring
- The rind has lost its bright gloss and the surface feels slightly rough
Tools
- A sharp knife or secateurs to cut the stalk, leaving a short stub on the fruit
- Padded crates or straw-lined trailers — melons crack from impact and stacking
- Gloves and shade for the harvested fruit
Expected yield
Roughly 20–35 t/ha for open-pollinated varieties (Sugar Baby around 20–30 t/ha) and 40–60 t/ha for hybrids (Kiran 45–55, Arka Manik up to 60) on well-managed drip-and-mulch beds. On an acre this is about 120–250 quintals.
Post-harvest & storage
Storage
Watermelon does not ripen further after cutting, so it must be harvested ripe. Whole fruit keeps 2–3 weeks at 10–15°C and moderate humidity; below about 7°C it suffers chilling injury (pitting, off-flavour). At ambient summer temperature a thin-rinded type like Sugar Baby holds only a few days, a firm-rinded hybrid a week or more.
Packaging
Grade by size and check each fruit for cracks, blotch and soft spots. Load firm-rinded fruit in single or double layers with straw or padding between; do not stack thin-rinded types more than two deep.
Transportation
Move as soon as possible after harvest, cushioned against road shock. Internal cracking from rough transport is the main reason a good-looking load is rejected at the market.
Shelf life
3–7 days at ambient for thin-rinded types, up to 2–3 weeks at 10–15°C for firm-rinded hybrids. Cut watermelon must be refrigerated and used within a day or two.
Market prices
Today's mandi price near you, pulled live from the government's own Agmarknet data.
Live daily mandi prices from the government Agmarknet dataset.
Synced from data.gov.in (Agmarknet). Rates are ₹ per quintal.
Weather
Current conditions and a 5-day outlook for your selected location, with one line of stage-aware advice.
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Profit calculator
Your own cost sheet, expected yield and selling price — not ours.
Where the money goes
Share of the total cost per acre, using the calculator’s own default cost sheet below — adjust the numbers there to match your field and this picture will no longer apply to you exactly, but the ranking rarely changes.
- Labour26% (₹10,000)
- Land rent21% (₹8,000)
- Pesticide & weedicide13% (₹5,000)
- Fertiliser12% (₹4,500)
- Irrigation10% (₹4,000)
- Seed8% (₹3,000)
- Machinery5% (₹2,000)
- Interest5% (₹1,800)
Official downloads
Government and ICAR documents only — everything below is hosted on an official server.
Frequently asked questions
Why is my watermelon pale and not sweet?
Usually too much water near harvest, sometimes with too little sun, a potassium shortage, or picking before full maturity. Cut irrigation off 7–12 days before harvest so the last stretch is dry, give a potassium top-dressing at fruit development, and check the maturity signs before cutting.
What is the worst pest of watermelon?
The melon fruit fly. The female stings young fruit to lay eggs and the maggots rot it from inside; losses of a third to a half are common where it is not managed. Use pheromone traps and protein-bait spots from flowering, collect and bury all stung and fallen fruit, and plough the field after harvest.
Can watermelon be grown without irrigation?
In the river-bed (diara) method it is grown with almost no applied water — the planting pit reaches moist sand and the deep taproot follows the falling water table through the season. A main-field crop on ordinary land needs regular irrigation, ideally drip, until the final ripening stretch.
Which watermelon variety should I grow?
Sugar Baby for a quick crop and nearby markets; Arka Manik where disease pressure is high and the fruit has to travel; Kiran or a proven private hybrid for large commercial fields; Durgapura Meetha for hot arid and river-bed conditions; Pusa Bedana for the premium seedless market (with a pollenizer row). Confirm the local recommendation with your KVK.
How do I know a watermelon is ripe without cutting it?
Check three things: the ground spot where the fruit rested on the soil has turned cream or yellow (not white), the curly tendril nearest the fruit stalk has dried and browned, and the fruit gives a dull hollow thump rather than a sharp ring when tapped.
Does watermelon have an MSP or a mandi price?
There is no MSP for watermelon. It trades widely on Agmarknet as "Water Melon", with heavy records through the March–June season from markets across the northern plains, the peninsula and the river-bed belts. Price is highest for the earliest fruit and falls fast at the seasonal peak.
Still have questions?
The FAQs above cover the common ones. For anything specific to your field and soil, your nearest Krishi Vigyan Kendra is the authoritative answer.