Question 1

How many seeds per acre for corn?

Accepted Answer

Corn planting populations typically range from 28,000 to 36,000 seeds per acre depending on hybrid, irrigation, and soil type. Columbia Basin irrigated corn is commonly planted at 32,000 to 34,000 seeds per acre with 30-inch rows. Use the seed rate calculator to find the exact seed spacing for your target population and row width.

Question 2

How do I calculate soybean seeding rate?

Accepted Answer

Soybean seeding rates typically target 100,000 to 140,000 seeds per acre, depending on row spacing and field conditions. With 30-inch rows at 140,000 seeds per acre, seed spacing is approximately 4.5 inches. Enter your target population and row spacing in the calculator to find the correct seed spacing or sacks to order.

Question 3

How many sacks of potato seed do I need per acre?

Accepted Answer

Potato seed requirement depends on seed piece weight, row spacing, and in-row spacing. A typical Russet Burbank planting at 34-inch rows with 9-inch spacing and 2 oz seed pieces requires roughly 14 to 16 sacks (100 lbs each) per acre before accounting for chip loss. Use the potato seed calculator to enter your exact spacing and seed piece weight.

Question 4

What is chip loss in potato seed?

Accepted Answer

Chip loss is the percentage of potato seed weight lost during cutting and handling, typically 6 to 12 percent. If you need 1,500 lbs net of seed but have 8% chip loss, you must order roughly 1,630 lbs gross to account for the waste. The potato seed calculator adjusts your sack order automatically when you enter a chip loss percentage.

Question 5

How do I calculate dry bean planting population?

Accepted Answer

Dry bean planting populations for navy, pinto, and black beans typically range from 80,000 to 110,000 seeds per acre depending on variety and row spacing. At 22-inch rows, 80,000 seeds per acre requires a seed spacing of about 7.5 inches. Enter your target population and row spacing into the seed calculator to find exact spacing.

Question 6

How do I convert seed spacing to population per acre?

Accepted Answer

Population per acre equals 43,560 square feet divided by row spacing in feet multiplied by seed spacing in feet. For example, 30-inch rows (2.5 ft) with 6.5-inch spacing (0.54 ft) gives 43,560 divided by (2.5 times 0.54), which equals approximately 32,267 seeds per acre. The calculator handles this conversion automatically in both directions.

Seed Rate Calculator

Seed Rate Calculator