Estimate rice seed rate per hectare and total seed requirement for inbred or hybrid varieties, under direct seeding or transplanting. Adjusts for germination, field loss and your target paddy yield — then shows seed cost per tonne of expected output.
Rice seed rate depends on establishment method: transplanting needs far less seed than direct or broadcast seeding. The calculation uses target plants/m², thousand grain weight, germination and expected field loss.
Reference bands: direct-seeded inbred 60–80 kg/ha, direct-seeded hybrid 20–30 kg/ha, transplanted inbred 35–45 kg/ha, transplanted hybrid 12–18 kg/ha. Rates are adjusted from an 85% germination and 10% field-loss baseline. Always validate against a local germination test and your seasonal establishment conditions.
Hybrid rice uses roughly a third of the seed volume of inbred rice but costs several times more per kilogram, so the decision is rarely about seed price alone. Hybrids typically add 15–25% paddy yield in irrigated, well-managed systems, cannot be farm-saved, and demand tighter water and nutrient control. Inbred certified seed remains the default for rainfed and lower-input systems where input reliability matters more than yield ceiling.
Direct seeding removes nursery and transplanting labour and shortens the field cycle, but every seed is exposed to birds, submergence and uneven emergence — so rates rise. Transplanting concentrates germination in a controlled nursery, cutting seed volume sharply per hectare of final field. Laser-levelled fields, treated seed and drum seeders all pull the direct-seeded rate towards the lower end of the band.
Direct-seeded inbred rice is typically sown at 60–80 kg/ha, direct-seeded hybrid rice at 20–30 kg/ha. For transplanting, inbred nurseries usually need 35–45 kg/ha of field area and hybrids 12–18 kg/ha. Low germination, poor land levelling or broadcast establishment push the rate to the upper end of each band.
Hybrid rice has far higher tillering capacity and much more expensive seed, so commercial programmes use 20–30 kg/ha for direct seeding and 12–18 kg/ha for transplanting. The calculator adjusts that base rate for your germination percentage, expected field loss and target yield.
In well-managed irrigated systems hybrids typically deliver 15–25% more paddy than comparable inbred varieties, but they require higher input discipline, cannot be farm-saved, and cost several times more per kilogram of seed. Compare cost per tonne of expected paddy, not cost per kilogram of seed.
Direct seeding places every seed in the field, so germination losses, bird damage, submergence and uneven emergence are absorbed by a higher rate. Transplanting concentrates seed in a nursery where establishment is controlled, so far less seed is required per hectare of final field area.
Thousand-seed weight, germination percentage, field loss, establishment method, variety type and target plant density. Seasonal factors matter too — dry-season crops on well-levelled, laser-graded fields need less seed than wet-season broadcast establishment.
Yes. Submit your variety criteria, volume and delivery country and a dedicated sourcing specialist returns private, side-by-side offers from verified inbred and hybrid rice producers. The service is free for buyers and supplier identities stay confidential until you choose to proceed.
Indicative only
SeedMatch Group is an independent agricultural project sourcing and RFQ platform. We are not a farm, seed producer, fertilizer manufacturer, irrigation manufacturer, greenhouse builder, EPC contractor, lender or financial advisor. Supplier and project partner outreach is handled only after a commercial project brief is reviewed.
Supplier and manufacturer content is provided for research, transparency and discovery only. Buyers submit one project or RFQ to SeedMatch Group; our team validates and organises it, manages any suitable supplier or manufacturer outreach, and presents the responses through SeedMatch. There is no public directory of company identities, automatic matching, direct messaging or direct buyer-supplier contact.
Illustrative project summary
An established open-field grower adds protected cropping with natural ventilation and drip irrigation.
2 ha · Single-span polytunnel · Leafy greens and herbs
Indicative full greenhouse project CAPEX
USD 575K – USD 1.3M
Illustration only, not a real project or quotation. This is the structure, equipment and site-works budget for the example greenhouse, not the price of this calculator’s individual system, seeds or inputs, and not a result calculated from your entries. Excludes land, permits, packhouse, financing costs and working capital.
Based on the published commercial greenhouse cost benchmark. Written offers require a private project review; commercial projects start from USD 250K.
Open one private brief. A sourcing specialist validates and organises the RFQ, manages outreach to suitable independent suppliers, and presents any responses through SeedMatch on a consistent technical and commercial basis. Response numbers and timing are not guaranteed.
