📏 Crop Spacing Calculator — Row Width & Plant Distance Calculate plant spacing within rows to achieve target plant population. Optimise row spacing and plant density for maximum yield.
Quick answer: Plant spacing (cm) = (Row spacing × 100) ÷ Plants per m². Example: 25cm rows, 200 plants/m² = 12.5cm between plants.
📏 Calculate Plant Spacing
Calculate Spacing
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Plant Spacing in Row (cm)
📐 How Plant Spacing Is Calculated Plant spacing (cm) = (Row spacing × 100) ÷ Plants per m²
Determine target plant population — based on crop and growing conditionsMeasure row spacing — distance between rows on your seederCalculate plant spacing — within the row to achieve targetConvert to plants per metre — for easy field checking📊 Worked Example Wheat crop target 200 plants/m² with 25cm row spacing.
Plant spacing = (25 × 100) ÷ 200 = 12.5 cm
At seeding, check that your seeder is delivering roughly 8 seeds per metre of row (accounting for germination and establishment).
❓ Frequently Asked Questions
How do I calculate plant spacing? Plant spacing (cm) = (Row spacing × 100) ÷ Plants per m². Example: 25cm row spacing, target 200 plants/m² = (25 × 100) ÷ 200 = 12.5cm between plants.
What is typical row spacing for different crops? Wheat/barley: 18-25cm, Canola: 15-30cm, Corn/maize: 75-100cm, Soybeans: 25-50cm, Sunflowers: 75cm.
Does narrower row spacing increase yield? Yes. Narrower rows (18-22cm vs 25-30cm) improve light interception, reduce weeds, and increase yield by 5-15% in wheat and canola. But requires more seed.
How do I measure plant spacing in the field? Measure 1 metre of row. Count plants. Spacing (cm) = 100 ÷ plants per metre. For 25cm rows, 40 plants per metre = 100 ÷ 40 = 2.5cm spacing. Take 10 random samples.