Farming Practices That Prevent Soil Erosion: 7 That Work

The farming practices that prevent soil erosion all work in one of three ways: they keep the ground covered, they slow water and wind down, or they help the soil soak up rain. The seven with the strongest field evidence are conservation tillage, cover crops and crop residue, diverse crop rotations, contour farming and terraces, grass buffers and windbreaks, careful water management, and steady work on soil organic matter. Used together, they can cut soil loss on a sloping field by well over half.

This guide explains each practice in plain steps, with numbers from the USDA, the European Commission and university research. It shows how much each one can lower soil loss, what it costs, where cost-share help exists, and how to check results in the field. A calculator lets you test whether a cover crop pays on your own acres.

Why soil erosion on farmland needs action

Soil forms slowly, but it can wash or blow away in a single storm. A global model published in Nature Communications estimated that water moved about 35.9 billion tonnes of soil in 2012, and that cropland expansion drove about 80% of the rise in erosion between 2001 and 2012. The same study found that wider use of conservation practices could offset about 64% of that rise.

Chart

US cropland erosion rate, 1982 vs 2017

Tons of soil per acre per year on cultivated cropland, by type

In the United States, the picture has improved but is not solved. A farmdoc daily review of the 2017 National Resources Inventory reports that US cropland lost an average of 4.63 tons of soil per acre per year: 2.67 tons from sheet and rill (water) erosion and 1.96 tons from wind. Water erosion was 3.89 tons and wind erosion 3.24 tons per acre per year in 1982. The review notes that much of the gain came between 1982 and 1997, and that water erosion rates have risen again since 1997.

Europe has the same problem. Eurostat’s soil erosion indicator shows that 5.1% of the EU’s non-artificial erodible land was at risk of severe water erosion in 2023, defined as a loss of more than 10 tonnes per hectare per year. That is about 190,000 km². The share has fallen slowly, from 6.1% in 2000 and 5.3% in 2016.

Lost topsoil means lost yield. The Ontario government’s guide to soil erosion causes and effects notes that tillage alone can move soil down a slope, and that research on tillage-eroded fields has found corn yield declines of up to 40% on eroded knolls. Sediment also carries phosphorus and pesticides into ditches, streams and lakes.

Three kinds of erosion on farms

• Water erosion: raindrops break soil crumbs apart, then runoff carries them off as thin sheets, small rills or deep gullies.
• Wind erosion: dry, loose and bare soil blows away on flat, open land, mainly in spring and after harvest.
• Tillage erosion: plows and discs move soil downhill a little with every pass, thinning the topsoil on hilltops.

Chart

EU countries with the highest share of land at severe erosion risk

% of non-artificial erodible land losing more than 10 t/ha/yr to water erosion, 2023

Comparison table of farming practices that prevent soil erosion

The table sums up the seven practices. The numbers come from the sources named in each section and vary with soil, slope and rainfall, so treat them as a guide, not a promise.

1. Conservation tillage and reduced disturbance

Conservation tillage leaves at least 30% of the soil surface covered with last season’s crop residue at planting. The two main types are no-till, where the planter cuts straight through the residue, and mulch till or strip-till, where only a narrow band is worked. Less disturbance means the soil keeps its structure and the residue acts like a roof against rain.

Chart

US crop acres under conservation tillage

% of planted acres using no-till or mulch till, latest USDA survey year for each crop

US farmers have moved a long way. In representative surveys reported by the USDA Economic Research Service, farmers used conservation tillage on 76% of corn acres, 74% of soybean acres, 68% of wheat acres and 43% of cotton acres. No-till on corn rose from 16% of acres in 2001 to 36% in 2021.

The gains can slip. A Choices magazine analysis of US Census of Agriculture data found that no-till area grew by 7.9 million acres between 2012 and 2017, but would have been 5.2 million acres higher without farmers who stopped using it.

How to start with conservation tillage

1. Pick one field with a moderate slope and good drainage for a trial.
2. Set the planter for residue: row cleaners, closing wheels and down-pressure matter.
3. Spread residue evenly at harvest so it does not bunch in wet mats.
4. Plan weed control without tillage, and check herbicide labels and local rules before use.
5. Keep at it for at least three to five seasons before judging results.

Cost-share help can lower the risk. The NRCS Pennsylvania payment schedule for fiscal year 2026 lists $26.53 per acre for no-till and strip-till under practice 329 (published EQIP payment rates, not a market price). Rates differ by state and year, so check with your local office.

2. Crop residues and cover crops

A cover crop is planted to protect and feed the soil, not to sell. Cereal rye, oats, annual ryegrass, crimson clover and radish are common choices. They hold the soil with roots and shield it with leaves in the months when cash crops are not growing.

Field results are strong. A University of Missouri Center for Regenerative Agriculture review reports that grass cover crops after no-till soybeans cut soil loss by 87 to 96% in Missouri, and that cover crops cut soil loss by 97 to 99% after no-till cotton in Mississippi. In a tomato system, cover crops reduced sediment loss by 83% even though runoff fell by only 44%. The same review says cover crops are not an erosion silver bullet on their own; heavy storms call for a mix of practices.

The Ohio State University fact sheet on cover crops explains why. Plants and residue slow runoff, and runoff speed matters a great deal. If the speed of the water doubles, it can carry 64 times more sediment and nutrients. Cover crops also take up leftover nitrogen, which can then return to the next crop.

Ontario’s soil guide recommends leaving more than 30% residue cover or growing a winter cover crop on annual row-crop land, such as red clover under wheat or oats after silage corn.

Cover crop tips

• Plant as early as you can after harvest; more autumn growth means more cover.
• Use a grass such as cereal rye where erosion is the main worry, as it grows fast and survives winter.
• Add a legume when you want to supply nitrogen to the next crop.
• Plan how and when you will end the cover crop before you plant it.
• Do not bale or burn the residue on slopes that erode easily.

Pennsylvania’s fiscal year 2026 EQIP list pays $76.94 per acre for a single-species cover crop and $80.15 for a multi-species mix (practice 340). Use the calculator below to see whether the numbers work for your field.

▶ Why soil carbon matters for healthy, resilient farm soils. · 12:15

3. Crop rotation and diversification

A rotation that mixes row crops with small grains, hay or pasture keeps the ground covered for more of the year. Ontario’s guide notes that crops which give full cover for much of the year, such as alfalfa or winter cover crops, reduce erosion much more than row crops that leave the soil bare for long periods, above all in the stormy spring and summer months.

Rotations help in other ways too. Deep roots from alfalfa or clover open channels so rain soaks in. Different crops break pest and disease cycles and add a range of residues that feed soil life. A corn and soybean rotation leaves less residue after soybeans, so a cover crop after soybeans fills that gap.

Simple rotation ideas

• Corn, soybeans, winter wheat with a clover cover crop.
• Two or three years of hay or grass after several years of grain on steep fields.
• Small grains or forage on the most erosion-prone parts of a field, with row crops on flatter ground.

4. Terracing, contour farming, and slope management

On slopes, the direction of tillage and planting matters. Rows that run up and down the hill act as channels for runoff. Rows that follow the contour act as small dams.

The USDA’s Agriculture Handbook 537, the reference behind the Universal Soil Loss Equation, gives a “P value” for each support practice. A P value of 0.50 means soil loss is half what it would be with up-and-down farming. For contouring, the P value is 0.50 on 3 to 8% slopes and rises to 0.90 on 21 to 25% slopes, because contour rows lose their effect on steep ground or long slopes. Contour strip cropping, which alternates bands of row crops with hay or small grain, halves the P value again: 0.25 on 3 to 8% slopes. On terraced fields, the handbook lists sediment-yield P values as low as 0.05 for terraces with underground outlets.

Contouring also has slope-length limits. The handbook gives a maximum of 300 feet on 3 to 5% slopes and 120 feet on 9 to 12% slopes. Beyond that, water gathers enough speed to break over the rows, so terraces, diversions or buffer strips are needed.

Choosing between contouring, strips and terraces

• Contour farming: lowest cost; best on gentle, even slopes. Pennsylvania’s EQIP list pays $8.75 per acre (practice 330, fiscal year 2026).
• Contour strip cropping or buffer strips: good on medium slopes and where you already grow hay.
• Terraces: earthworks that break a long slope into shorter ones; they need design help from an engineer or your local conservation office.

Chart

Soil loss left after contour practices, by slope

USLE P value (1.0 = up-and-down farming; lower is less soil loss)

5. Grass buffers, hedgerows, and windbreaks

Strips of permanent grass, shrubs or trees catch soil before it leaves the field. Filter strips along ditches and streams trap sediment. Grassed waterways carry water down natural drainage lines without cutting gullies. Windbreaks of trees or tall grass slow the wind across open fields.

A study of the EU support-practice factor by Panagos and colleagues looked at contour farming, stone walls and grass margins across the European Union. Together, these features cut the estimated erosion risk by about 3% at EU scale. Grass margins gave the largest share of that cut, 57%, with stone walls at 38%. The authors suggest more grass margins and wider contour farming on slopes under 10% as policy options.

In the US, buffer strips can earn payments for the crop you give up. Pennsylvania’s fiscal year 2026 list pays $525.14 per acre of buffer for contour buffer strips with introduced grass species, as foregone income (practice 332).

Where to place buffers

• At the bottom of slopes and along every ditch, stream or pond edge.
• In low spots where water gathers and gullies start.
• On the side of fields facing the prevailing wind, for windbreaks.

6. Water management and irrigation practices

Erosion is driven by water that runs off rather than soaking in. Anything that lets more rain infiltrate, or slows water once it moves, lowers soil loss.

• Grassed waterways and drop structures: carry runoff safely through low spots.
• Irrigation set to soil intake rate: sprinklers and furrows that apply water faster than the soil can take it cause runoff. Drip or low-pressure systems lower that risk.
• Avoid traffic on wet soil: compacted wheel tracks shed water and start rills.
• Drainage where it fits: subsurface drains lower the water table so rain soaks in rather than running off; check local rules before draining wetlands.

Speed is the key. As the Ohio State fact sheet notes, a small rise in runoff speed brings a much larger rise in the soil and nutrients carried away. That is why breaking up long slopes and keeping water spread out works so well.

7. Building soil health and organic matter

Soil with more organic matter forms stable crumbs, called aggregates, that hold together when wet. Stable crumbs resist rain splash, keep pores open for water to soak in and are harder for wind to lift. The Ohio State fact sheet notes that cover crops protect soil aggregates from raindrop impact.

Ways to build organic matter include adding manure or compost at rates set by a nutrient plan, growing cover crops and perennials, keeping residue, and cutting tillage. Changes are slow and best measured with the same soil test every few years. Follow your nutrient management plan and local rules when spreading manure, as runoff from bare, wet soil can carry nutrients to water.

▶ Why soil is a living system and how it holds water and nutrients for crops. · 9:58

Is a cover crop worth it on your field?

Use the calculator to compare the cost of a cover crop with the value of the soil it keeps and any cost-share payment. All default values are examples set near break-even; replace them with your own figures.

Try the numbers for your own farm below.

Adaptive management and monitoring for sustained soil erosion control

Soil conservation is not a one-time job. Weather changes, equipment changes and crop plans change. A simple routine helps you see whether the practices are working.

1. Walk fields after heavy rain: look for rills, fans of sediment at field edges and muddy water in ditches.
2. Measure residue cover: use the line-transect method with a marked rope after planting to check you have at least 30% cover.
3. Map problem areas: mark gullies, bare knolls and low spots on a field map each year.
4. Track crop growth: satellite crop maps show weak, thin or bare patches that often match eroded ground.
5. Review every winter: change practices where problems repeat.

Satellite vegetation maps make step 4 easier on large or scattered farms. Farmonaut’s satellite crop monitoring shows crop health maps for each field through the season, so you can spot thin stands on slopes and plan a site visit. Our carbon footprinting tools track practices that affect soil carbon, and the satellite and weather API lets agronomists pull field data into their own systems. Large operations can use the agro admin app and fleet management tools to plan fieldwork and keep heavy machines off wet ground.

▶ A walkthrough of the web app: draw a field and read satellite crop health maps. · 8:43

Policy and cost-share help

Many governments pay farmers to adopt these practices. In the United States, the NRCS Environmental Quality Incentives Program (EQIP) and Conservation Stewardship Program (CSP) publish yearly payment lists by state. In the EU, Common Agricultural Policy rules on good agricultural and environmental condition include measures to limit erosion, and the Panagos study notes that some member states require contour plowing on slopes. Canada and Australia run their own provincial, state and regional programmes. Rules and rates change each year, so get advice from your local conservation office before you sign up. Lenders and insurers may also value a record of good soil care; see our page on crop loans and insurance.

Fixing the problem at national scale is not cheap. The farmdoc daily review cites research estimating that the US would need to invest $6.4 billion a year to bring erosion below 0.5 tons per acre per year (Pimentel and others, 1995).

Frequently asked questions about farming practices that reduce soil erosion

What are the best farming practices that prevent soil erosion?

Keep the soil covered and slow the water. Conservation tillage, cover crops, crop rotation, contour farming and terraces, grass buffers and windbreaks, good water management and higher organic matter all help. The best results come from using several together.

Which practice helps reduce soil erosion the fastest?

Cover crops and leaving crop residue give protection in the first season. In Missouri trials, grass cover crops after no-till soybeans cut soil loss by 87 to 96%.

How do farmers prevent soil erosion on slopes?

Farm across the slope on the contour, add strips of grass or hay, and build terraces on long or steep slopes. USDA Handbook 537 shows contouring alone halves soil loss on 3 to 8% slopes.

How can farmers reduce sediment runoff from fields?

Plant filter strips along ditches and streams, put grassed waterways in low spots, keep residue on the surface and avoid tilling right before heavy rain.

Does no-till stop soil erosion?

No-till greatly reduces water and wind erosion because residue covers the soil and roots hold it. On long or steep slopes it works best with cover crops, buffers or terraces.

How much soil do US farms lose each year?

The 2017 National Resources Inventory, as reported by farmdoc daily, estimated an average of 4.63 tons per acre per year on cropland, with 2.67 tons from water and 1.96 tons from wind.

Summary: essential takeaways

• Bare soil erodes; covered soil holds. Residue, cover crops and perennials are the base of any plan.
• On slopes, farm on the contour, add grass strips and use terraces where slopes are long.
• Buffers along water and windbreaks across open land catch what the field lets go.
• Slow water down; a doubling of runoff speed multiplies the soil it can carry.
• Check results after storms and every year, and use cost-share programmes to lower the cost.

Related pages on our site: ways to control soil erosion and weeds, stopping water erosion, product traceability, web and mobile apps.