Arkansas farm families just got their latest report card from the USDA. As the University of Arkansas Division of Agriculture reported on November 11, the USDA trimmed its Arkansas corn estimate to 190 bushels an acre and soybeans to 56 bushels an acre, yet it still expects record state yields for both. Rice estimates went up slightly.
Not everyone is convinced. The Division's soybean agronomist said many farmers reported yields that were "average at best," and he expects the number to come down in the final report in January. How do the experts decide? They count. Federal surveyors counted soybean pods in sample plots (Arkansas averaged 1,552 pods per 18 square feet this year), and the same report tracks how much of the winter wheat crop has emerged from the soil.
That is real science your kids can copy at the kitchen table. Farmers and crop scientists live by one simple number that starts with every seed: the germination rate. Out of every seed planted, how many actually come up?
What your kids will learn
Grades K-5
- What a seed needs to sprout: water, warmth and air
- How to spot the first root, the shoot and the seed leaves (cotyledons)
- How to count carefully and record results with tally marks and drawings
- Why scientists test many seeds instead of just one
Grades 6-12
- The stages of germination and early seedling growth
- Calculating germination rate as a percentage and comparing it across varieties
- Sampling: why surveyors count pods in small plots to estimate a whole state's harvest
- Collecting, graphing and interpreting data, then writing a conclusion backed by evidence
This week's activity: the Germination Rate Challenge
Try this with any seeds you have on hand, such as dried beans from the pantry or leftover garden seed.
- Count out a sample. Pick 10 or 20 seeds. Twenty makes the math easy, because each seed is worth 5 percent.
- Make a prediction. Ask each child to guess how many will sprout and write it down.
- Set up the "rag doll." Lay the seeds in rows on a damp (not dripping) paper towel, fold it over, and slide it into a zip bag. Keep it somewhere warm and out of direct sun.
- Check every day. Count the seeds with a visible root and make a tally mark for each new one. Keep the towel damp.
- Do the math. After about a week, divide the number that sprouted by the number you started with and multiply by 100. That's your germination rate.
- Compare like a farmer. Run a second batch with a different seed, or with older seeds, and see which "crop" would give the better stand in the field.
Older kids can graph sprouts per day and talk about why a farmer would want to know this number before buying seed for hundreds of acres.
Make it easier with a ready-made kit
The Heirloom Tomato Seed Germination Science Kit is built for exactly this challenge. It comes with 20 heirloom tomato seeds in assorted varieties and absorbent germination paper, plus digital curriculum and worksheets for your grade band, emailed after purchase. Tomato seeds typically sprout in 3 to 10 days, and the worksheets include a daily observation log and a variety comparison chart for days to sprout and root length. Older students get a lesson on heirloom varieties and heredity, and a lab report template. Once the roots reach about half an inch, kids can transplant their seedlings into soil and keep the study going.
Want a second "crop" to compare? The Surprise Herb or Vegetable Seed Germination Science Kit sends one packet chosen from 50 popular herbs and vegetables, with K-5 curriculum and worksheets. Part of the fun is figuring out what you got from the seed's shape, size and color, then seeing whether it sprouts faster or slower than your tomatoes.
Join the growing community
Every kit purchase includes an invitation to Aardvark's Seed Planting For Little Hands, our private group for families using our kits. Share your germination rate, post a photo of your first roots, and compare results with other young growers. Arkansas kids are running these experiments alongside families in West Virginia and Arizona, and it's fun to see whose seeds win the race.
Start your own seed count this week
Arkansas farmers will get their final numbers in January. Your kids can have theirs in about a week.
- Heirloom Tomato Seed Germination Science Kit: $25.00 (Grades K-5 or 6-12)
- Surprise Herb or Vegetable Seed Germination Science Kit: $15.00
