Req 8a2 — Seed Germination Testing

A germination test answers a simple question: if you plant these seeds, how many are likely to sprout? Farmers and gardeners do not assume a bag of seed is perfect. They test it so they know how much seed to plant and whether the lot is still worth using.

A Simple Germination Tester

You can make a basic tester with paper towels, water, and a tray or plastic bag.

How to Run the Test

1. Moisten the paper towel so it is damp, not dripping.
2. Count out 50 seeds of one crop and spread them so they do not overlap.
3. Fold or cover the towel and place it in a labeled bag or tray.
4. Keep the seeds warm and check daily.
5. Count how many seeds germinate normally.
6. Repeat for the other three crops.

A seed counts as live when it produces a healthy sprout, not just a cracked seed coat. Weak, moldy, or misshapen seedlings usually do not count as good germination.

Calculating Percent Live Seed

Use this formula:

number of healthy sprouts ÷ 50 × 100 = percent live seed

If 43 of 50 soybean seeds sprout well, then:

43 ÷ 50 × 100 = 86% live seed

Why the Result Matters

A high germination percentage means seed is vigorous and likely to establish an even stand. A lower percentage means you may need more seed to get the same plant population—or the seed may not be worth planting at all.

Official Resources