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Seed Rate Calculator for Farms

Calculate how much seed you need for a given crop area using a seed-rate input, with acre and hectare conversions for field planning.

Seed Required
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Approx. Seed Cost
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Buffer (10% Extra)
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Continue with the next calculation that usually goes with this one.

Crop Yield CalculatorConnect seed quantity with expected yield.Irrigation Water CalculatorEstimate crop water requirements.NPK Fertilizer CalculatorPlan nutrient application.

Seed Rate Planning for Indian Crops

Using the correct seed rate is critical for optimal plant population, which directly determines yield potential. Too few seeds results in gaps and unused field area; too many wastes expensive seed and creates overcrowded plants that compete for nutrients and light, reducing individual plant productivity.

Why Germination Percentage Matters

Germination percentage varies by seed lot, storage and crop. Use the germination figure from the seed label or your germination test when available.

Line Sowing vs Broadcasting

Seed requirements can differ between line/row sowing and broadcasting. Use the method-specific recommendation for your crop and variety when available.

Frequently Asked Questions

State Seed Corporations, National Seeds Corporation (NSC), and registered private seed companies supply certified seeds. NSC's e-commerce portal allows online ordering. Your local Krishi Vigyan Kendra (KVK) can advise on the best variety for your region.
Take 100 seeds at random, spread on a moist cloth or paper towel, and keep in a warm place. Count the germinated seeds after 7-10 days (varies by crop). This percentage is your expected field germination.
Seed treatment with fungicides, insecticides, and bio-inoculants (Rhizobium for legumes, Trichoderma for soil-borne disease protection) significantly improves germination and early plant establishment, and is recommended by ICAR for most crops.
🔄 Last Updated: September 2026 · Rule year is shown where relevant; verify source-linked rules before filing or payment

Formula

Formula: Seed Rate (kg/ha) = (Plant Density × 1000 × Seed Weight) ÷ (Germination % × 10,000). Adjust for field losses (typically add 10–15% extra).

Worked Example

Wheat: Target 200 plants/m², 1000-grain weight = 40g, 90% germination. Seed rate = (200 × 40) ÷ (90 × 10) = 88.9 kg/ha. Add 10% for losses: buy 98 kg/ha. Standard recommendation: 100–125 kg/ha for wheat.

Seed Rate Calculator India — Optimising Crop Planting for Maximum Yield

Seed rate is the quantity of seed required to plant one hectare (or acre) of land at optimal plant density. Using the correct seed rate is critical for achieving target plant population — too little seed leads to sparse crops and yield loss; too much wastes expensive seeds and causes overcrowding that reduces individual plant yield and increases disease risk.

Seed Rate Formula: Seed Rate (kg/ha) = (Target Plant Population per ha × 1000 × Seed Weight in grams) ÷ (Germination % × 10,000). The target population depends on the crop variety and spacing recommendation from ICAR (Indian Council of Agricultural Research). Always add 10-15% extra to account for field losses from poor germination, pest damage, and irregular moisture.

Reference Seed Rates for Major Indian Crops: Wheat: 100-125 kg/ha (transplanted varieties may use less). Paddy: 20-25 kg/ha for transplanting nursery; 80-100 kg/ha for direct seeding. Maize: 20-25 kg/ha. Soybean: 70-80 kg/ha. Cotton: 3-5 kg/ha (hybrid varieties vary significantly). Groundnut: 100-120 kg/ha (shelled). Sunflower: 5-7 kg/ha. These are general recommendations — your KVK (Krishi Vigyan Kendra) can provide variety-specific rates for your agroclimatic zone.

Germination Testing — Before You Calculate: Before sowing, conduct a germination test: take 100 seeds randomly from the lot, place on moist cloth at room temperature for 3-7 days, count germinated seeds. Germination % = germinated seeds ÷ 100 × 100. If only 80 of 100 seeds germinate, the seed rate must be increased proportionally (÷ 0.80 instead of ÷ 0.90 for 90% germination). Poor germination from old, improperly stored seeds is a major cause of low plant populations and yield losses.

Certified vs Farm-Saved Seeds: Certified seeds from government certified seed companies (National Seeds Corporation, State Farms Corporation) have specified germination and varietal standards. Farm-saved seeds may have lower germination, variety mixing, and seed-borne diseases. The extra cost of certified seed (typically ₹2,000-5,000 per quintal premium over farm seed) is may be recovered through improved establishment and crop uniformity. PM Fasal Bima Yojana also has provisions for seed replacement to certified varieties.

CalcuTools India · Free calculator · Updated September 2026 · Applicable rule year shown on this page · Check local agronomic guidance and current scheme rules · About · How we verify

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About the Seed Rate

This free Indian calculator helps you compute an estimate for seed rate — reviewed for the applicable current period. Calculations use documented formulas and source notes shown on this page where applicable.

How to Use This Calculator

Enter your values in the fields above and click Calculate. Results update instantly. You can adjust any input and recalculate as many times as needed — completely free with no sign-up required.

Accuracy and Verification

Our seed rate formulas are sourced from official Indian regulatory bodies including the Income Tax Department, EPFO, RBI, Ministry of Finance, and WHO where applicable. We verify results against official calculators before publishing and update with every budget and policy change.

Disclaimer

Results are estimates based on the inputs you provide. Actual outcomes can vary with the rules, rates, prices, biological conditions, or other assumptions that apply to your situation. Review the assumptions and effective date shown on this page before using a result for an important decision.

CalcuTools India · Free calculator platform · About us · How we verify · Last Updated September 2026 · Applicable rule year shown on this page

🚀 Continue Planning

Your next logical steps, in order:

1🌱 NPK Calculator→2🌾 Crop Yield→3💧 Irrigation Calculator→

From seed quantity to farm planning

Seed rate is only one part of the planting decision. Link it to area, spacing, water, fertilizer and expected yield.

Plant spacingTranslate row and plant spacing into a workable planting layout.Crop yieldConnect planted area and crop assumptions to expected output.IrrigationEstimate the water side of the same crop plan.NPK fertilizerContinue into nutrient planning for the crop.Agriculture toolkitExplore the wider set of farming calculators.Area conversionConvert common land units before entering your area.
Important: recommended seed rates can vary by crop, variety, seed quality, sowing method and local agronomy guidance. Treat the calculator as a planning estimate and follow the crop/seed-specific recommendation applicable to your field.