Before this course: Crop Planning: seasons, yields and records (course 2.16.2), and before it Start a Small Farm (course 2.16). You should already have a bed map, a rotation plan, a soil test and four record sheets.
Soil health as a system
Soil is not dirt. It is a busy town full of tiny living things, and plant roots are the farmers' helpers that feed them. If you dig it up all the time, leave it bare and grow only one thing, the town gets sad. If you keep it covered and keep roots in it, the town gets strong.
- The US Natural Resources Conservation Service (NRCS) describes soil health on cropland through four principles: minimise disturbance, maximise soil cover, maximise biodiversity and maximise the presence of living roots. Some NRCS pages add a fifth, integrating livestock.
- NRCS notes that living roots give soil microbes their easiest source of food, because roots release carbon compounds into the soil.
- Practices that put the principles to work include cover crops, crop rotation, perennial crops that keep roots active through the year, and reduced tillage (NRCS design guidance, 2024).
- Principles are not recipes. The right mix depends on your climate, crop and equipment. Test one change on one field and compare it with a field you left as it was.
- Your own records (course 2.16.2, lessons 4 and 5) are how you prove a change helped.
| Principle | A practice you could test |
|---|---|
| Minimise disturbance | Less or no tillage on one block |
| Maximise cover | Mulch or a cover crop between cash crops |
| Maximise biodiversity | A longer rotation, a mixed cover crop |
| Maximise living roots | A cover crop in the gap before the next crop |
- Take your bed map from course 2.16.2 and mark which beds are bare for the longest time each year.
- For each bed, write what you do now for each of the four principles (disturbance, cover, diversity, living roots).
- Pick one principle and one practice to test (for example a cover crop in one bed).
- Choose a matching "control" bed that you manage as usual.
- Write down what you will measure: crop yield, soil test results, weeds, time and cost.
- Plan the test in your calendar, including when the cover crop is sown and when it ends. Ask your agriculture office which cover crops suit your season.
- Check: you have one test bed, one control bed, and a list of what you will record.
Videos by other creators on YouTube, for reference. They are not made by or affiliated with The Future Market.
Read the video script
[Host] "Healthy soil is a living system. Four principles keep it alive."
[Text on screen: Less disturbance, more cover, more variety, living roots] "NRCS says: disturb less, keep soil covered, grow a variety of plants and keep roots in the ground."
[Screen: two beds side by side, one bare, one with a cover crop] "Try one change in one bed and compare it with a bed you left alone."
[Host] "Your records tell you if it worked."
Write a half-page soil-health test plan: one test bed, one control bed, the practice, and the four numbers you will record.
ClaudeStuck? Copy a ready-made prompt for Claude
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For a grown-up: Claude is for adults (18+). Copy this, paste it into Claude, and use the answer to explain the lesson to your child.
I'm learning "Commercial Crop Farming: irrigation, soil and post-harvest" on The Future Market. Lesson 1: "Soil health as a system". What the lesson teaches: - The US Natural Resources Conservation Service (NRCS) describes soil health on cropland through four principles: minimise disturbance, maximise soil cover, maximise biodiversity and maximise the presence of living roots. Some NRCS pages add a fifth, integrating livestock. - NRCS notes that living roots give soil microbes their easiest source of food, because roots release carbon compounds into the soil. - Practices that put the principles to work include cover crops, crop rotation, perennial crops that keep roots active through the year, and reduced tillage (NRCS design guidance, 2024). - Principles are not recipes. The right mix depends on your climate, crop and equipment. Test one change on one field and compare it with a field you left as it was. - Your own records (course 2.16.2, lessons 4 and 5) are how you prove a change helped. - Principle - A practice you could test - Minimise disturbance - Less or no tillage on one block The exercise I'm working on: Write a half-page soil-health test plan: one test bed, one control bed, the practice, and the four numbers you will record. I'm stuck. Please: 1. Explain the main idea in plain, simple words with one everyday example. 2. Walk me through the exercise one small step at a time. Ask me what I've done so far before giving the next step. 3. Don't just give me the final answer. Help me do it myself, and check my work when I share it.
I'm a parent helping my child (about 8 years old) with a lesson called "Soil health as a system" from the course "Commercial Crop Farming: irrigation, soil and post-harvest". Here's what the lesson says: Soil is not dirt. It is a busy town full of tiny living things, and plant roots are the farmers' helpers that feed them. If you dig it up all the time, leave it bare and grow only one thing, the town gets sad. If you keep it covered and keep roots in it, the town gets strong. The activity: Write a half-page soil-health test plan: one test bed, one control bed, the practice, and the four numbers you will record. Please explain this so an 8-year-old understands: short sentences, a fun everyday example, and no hard words. Then give me 3 simple questions I can ask my child to check they understood, and a way to do the activity together, one tiny step at a time.
Sources
- USDA NRCS, Soil health on cropland: www.nrcs.usda.gov/conservation-basics/soil/soil-health/soil-health-on-
- USDA NRCS, Soil health management system design (2024): www.nrcs.usda.gov/sites/default/files/2024-11/fy25-dia-162-soil-health
From soil tests to decisions
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Crop water need and irrigation scheduling
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Choosing and managing an irrigation system
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Irrigation water and food safety
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Pest programmes at commercial scale
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Cooling, storage and post-harvest handling
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Cost an upgrade and write your improvement plan
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Final project
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Quiz
What are the four soil health principles NRCS lists for cropland?
Minimise disturbance, maximise soil cover, maximise biodiversity and maximise living roots.
Why compare a test bed with a control bed?
To see whether a change really helped, not just guess.
What does ET crop = ETo x Kc mean?
Crop water need equals reference evapotranspiration times a crop factor.
Which of drip, sprinkler and surface irrigation had the highest typical efficiency in the extension guide?
Drip.
Why check whether a water source needs a permit before you build an irrigation system?
Many places control large water takings and rules differ, so ask your agriculture office or water authority first.
What should you do if you find irrigation water is unsafe for a food crop?
Stop using it and fix the problem first.
Name three things a water assessment looks at.
The water source and system, how the water is applied and how long before harvest, the crop, and the weather (any three).
Why rotate the mode of action group of a pesticide?
To slow down resistance, because pests that survive the same product keep breeding.
If a spray seems not to work, what should you rule out first?
Application mistakes such as sprayer calibration, wrong rate or operator error.
Why cool produce quickly after harvest?
It slows metabolism, ethylene, moisture loss and microbe growth, which extends shelf life.
How do you work out a payback period?
Cost of the upgrade divided by the net gain per season.
Why test an upgrade with a worse case?
Because a plan that only works with perfect results is risky.
Final exam
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Certificate
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