What tips should I keep in mind?

Narrow rows (15-20") improve soybean yield 5-10% vs 30" rows. Corn optimum population ranges from 30,000-36,000 depending on soil and hybrid. Twin-row configurations are effectively narrow rows that fit standard equipment.

Planting Density Calculator

Calculate plant spacing and total plants per acre based on row width and in-row spacing.

Results

Visualization

How It Works

Plant population is determined by row width and in-row spacing. The formula converts spacing in inches to plants per acre using the constant 6,272,640 sq inches per acre. Narrower rows generally increase yield 5-10% by improving light interception.

The Formula

Plants/Acre = 6,272,640 ÷ (Row Width × In-Row Spacing)
Both spacings in inches

Variables

Row Width — Distance between rows in inches (common: 15, 20, 30, 36, 40)
In-Row Spacing — Distance between plants within the row in inches
6,272,640 — Square inches in one acre (43,560 sq ft × 144 sq in/sq ft)

Example

30-inch rows with 7.5-inch in-row spacing: 6,272,640 ÷ (30 × 7.5) = 27,878 plants/acre. At 95% survival = 26,484 final stand.

Tips

Narrow rows (15-20") improve soybean yield 5-10% vs 30" rows.
Corn optimum population ranges from 30,000-36,000 depending on soil and hybrid.
Twin-row configurations are effectively narrow rows that fit standard equipment.