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Irrigation, Soil & Fertility TimingErosion Control Timing Calendar
Soil loss happens in short, intense events, so erosion control is about having protection in place before the storm arrives. Timing the cover, the residue and the structures is the whole game.
Key points
- Protect soil before the storm season and after harvest.
- Seed cover crops early after harvest where possible.
- Walk fields after heavy rain and repair small problems quickly.
- Maintain waterways and other structures.
- Check conservation compliance rules with NRCS or FSA.
When is soil most at risk of erosion?
Risk peaks when soil is bare or loosely worked and heavy rain or wind arrives. Common times include the weeks after planting before the canopy closes, the period after fall harvest and the time after tillage.
Slope, soil type and rainfall patterns matter, so learn when your area gets its most intense storms and wind events. Ask your local NRCS office about local erosion risk.
Water erosion removes the topsoil that holds the most organic matter and nutrients, and it can carry sediment, nutrients and residues to streams. Wind erosion is the main concern on dry, flat, unprotected ground. The timing logic is similar for both.
What should you do before spring planting?
Review fields with erosion marks from last year and fix them: repair waterways, check terraces and outlets and plan residue management. Choose tillage and planting methods that leave as much cover as practical.
If you terminate a cover crop, time it so some residue remains on the surface, and plan planting dates with local rain patterns in mind.
Keep a bale of straw and some seed on hand for emergency patching of bare spots.
- Check waterways and outlets for damage.
- Plan residue levels for steep fields.
- Look at the storm season for your area.
How do you protect soil in the growing season?
Between planting and canopy closure, soil is exposed. Residue, mulch and cover crops help. Contour farming and strip cropping reduce the speed of runoff on slopes.
After storms, walk the fields. Look for rills, gullies and sediment at field edges, and fix problems quickly before the next rain.
Crop choice and row direction also play a part. Rows across the slope slow water better than rows straight down it, and crops that close canopy quickly protect soil sooner than slow starters.
What about fall and winter protection?
Seeding cover crops soon after harvest is one of the most effective ways to protect soil over winter, so plan the timing around crop maturity and harvest dates. SARE and extension publications describe species and timing choices.
If you cannot seed a cover, leave residue on the surface, avoid fall tillage on erodible ground and keep waterways in permanent vegetation.
Cover crops should be seeded early enough to establish before cold weather. If the season is too short, a quick grass or a nurse crop may be a better fit than a slow-growing species, and extension can suggest options.
What structures and practices help?
Grassed waterways, buffer strips, terraces, sediment basins and field borders are common structures. Many are planned and sometimes funded with help from NRCS and local conservation districts. Rules and funding change, so contact your local office for current information.
Maintenance matters. Mow or manage vegetation, clear sediment and repair damage so structures keep working.
Newly built structures need time for vegetation to establish, so seed them at the right time and protect them from traffic and heavy runoff until grass is established.
What mistakes should you avoid?
Leaving soil bare on slopes, tilling up and down the slope, ignoring small rills that grow into gullies and neglecting waterway maintenance are common mistakes.
If you farm highly erodible land, be aware that conservation compliance rules may apply to your USDA program participation. Confirm requirements with your local NRCS or FSA office.
Pay attention to field edges and headlands where runoff concentrates, and to places where equipment tracks run downslope. Small changes in layout and traffic can prevent gullies.
How do you keep records and check results?
Photograph problem areas before and after storms, and record dates and rainfall. Note which practices held up and which failed.
Use the notes to adjust next year's plan, and share them with your conservation adviser when you work on a conservation plan.
Check storm forecasts in the high-risk seasons for your area and keep a short list of quick fixes, such as straw, seed and outlet repairs, ready to use.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.