For many Kenyan farmers, watching their land lose fertility year after year is a familiar and painful experience. The signs are unmistakable: soils that crust over after rain, crops that struggle to reach knee height, gullies that deepen with every storm. An estimated 65 percent of Africa’s land is degraded, posing a serious threat to food security. In some areas, soils have lost more than four-fifths of the organic material critical to soil health and plant growth.

Yet there is good news. Degraded farmland can be restored. Across Kenya, farmers are proving that regeneration is not only possible but profitable.

This guide will help farmers, agribusiness investors, and beginners who have inherited degraded land or watched their soils decline. It provides a practical, step-by-step framework for rehabilitation based on proven Kenyan success stories. The methods outlined here are low-cost, use locally available materials, and have been tested by thousands of farmers across the country.

Understanding Soil Degradation: What Has Gone Wrong?

Before fixing a problem, you must understand its cause. Soil degradation in Kenya typically results from a combination of factors, and identifying which ones apply to your farm is the first step toward effective rehabilitation.

Soil Nutrient Depletion

Occurs when crops are harvested season after season without returning nutrients to the soil. When farmers remove every stalk, leaf, and cob, they export the very nutrients that should be recycled. Studies show that prolonged use of chemical fertilisers without organic matter, combined with monocropping, results in soils becoming acidic and nutrient-poor .

Soil Organic Matter Loss

Happens when crop residues are burned or removed. Agnes Barasa, a farmer in Kimilili sub-county, was among those who used to burn maize residue and dry vegetation in the fields, oblivious to the harm she was causing her soil . Burning destroys the organic matter that feeds soil microorganisms, holds moisture, and gives soil its structure.

Soil Erosion

Strips away the most fertile layer of soil—the topsoil. In Isiolo County, heavy rain has eroded soil around tree roots, leaving a 50-centimetre gap between the top roots and the ground . Erosion is often visible through deepening gullies, exposed tree roots, and soil deposited downhill or in waterways.

Soil Compaction

Results from repeated tillage, heavy machinery, and foot traffic. Compacted soils have poor water infiltration, restrict root growth, and become waterlogged easily.

Soil Acidification

Accelerated by blanket application of inorganic fertilisers without regard to actual soil requirements. The sugar industry in Kenya has seen declining sugarcane yields due to acidification of soils through blanket application of fertilisers .

The Impact of Flooding

This deserves special attention. The floods that devastated Kenya recently can damage soils up to 25 times more than ordinary flooding, leaving them with less than one-fifth of the organic material critical to soil health. This damage can affect crop yields for years ahead .

Before implementing any rehabilitation measures, walk your farm and observe. Where does water pool? Where is the soil bare? Are there gullies? Does the soil feel hard and compacted or crumbly and loose? These observations will guide your restoration strategy.

The First Step: Stop the Damage

Rehabilitation begins not with adding inputs, but with stopping harmful practices. The most critical change you can make is to stop burning crop residues. “I am among the farmers that used to burn maize residue and dry vegetation in the fields, oblivious of the harm I was causing my soil,” admits Agnes Barasa . Burning destroys organic matter, kills beneficial soil organisms, and releases nutrients into the air rather than returning them to the soil.

Instead of burning, leave crop residues on the field. Stalks, leaves, and husks should be chopped and either left as mulch or lightly incorporated into the soil. This plant material provides the carbon that soil organisms need to thrive.

Stop deep tillage. Traditional tilling breaks up soil to prepare fields for planting, but it comes with hidden costs. It releases stored soil carbon into the atmosphere, destabilises soil structure, and leaves land more vulnerable to erosion. Across Kenya’s drylands, highland farms, and mixed-crop systems, minimum tillage is proving itself as a practical, scalable pathway to restore soils .

In Tharaka-Nithi County, trials show that minimum tillage can increase soil moisture by 30 to 35 percent and significantly improve water-use efficiency compared with conventional tillage. Reduced tillage means less soil disturbance—sometimes by 30 percent, sometimes by as much as 90 percent—which preserves organic matter, protects soil structure, and allows biological processes to rebuild fertility .

Step Two: Physical Restoration of the Landscape

For farms with visible erosion features (gullies, exposed roots, or soil deposits) physical interventions are necessary before biological restoration can succeed.

Gully Healing

Gullies are deep channels carved by running water. They worsen with each rain, and if left untreated, they can render farmland unusable. Simple but effective gully-healing techniques have been successfully deployed across Kenya. In Baringo County, the Kachelitwa community learned to construct semi-circular bunds and trenches to capture rainwater, stop erosion, and regenerate vegetation .

The technique is straightforward: use branches, twigs, and other plant materials placed across or inside gullies to slow down water flow, trap sediment, and promote vegetation regrowth. Over time, the gullies fill with soil again, and grass regenerates .

The World Food Programme’s work in Isiolo demonstrates that these low-cost interventions work. “Just three weeks ago, when we had heavy rain, the terraces we built held a lot of water,” reports community leader Lekupes .

Terracing and Bunds

On sloping land, terracing or constructing bunds (raised ridges along contour lines) slows water runoff and allows it to soak into the soil. Semi-circular bunds have proven particularly effective in dryland areas. Nearly 1,000 such bunds have been created in the Kachelitwa community, and neighbouring communities have requested to learn from their experience .

These structures are labour-intensive but require no expensive materials. A simple hoe and a willingness to work are sufficient. For farmers with larger areas, mechanical support from county governments or NGOs may be available.

Water Harvesting

Restoring degraded land requires water. Without moisture, biological restoration cannot occur. Water harvesting structures—small earth dams, retention pits, and sub-surface dams—capture runoff during rains and release it slowly into the landscape. In Kanyerus, West Pokot, the community has harvested water runoff for reuse, improving groundcover and pastures .

Even on a small scale, digging shallow retention pits along contour lines captures water and allows it to percolate into the soil rather than running off.

Step Three: Add Organic Matter

Once physical structures are in place to capture and hold water, the next step is rebuilding soil organic matter. This is the single most effective action you can take to restore degraded soil.

Composting

Compost is decomposed organic matter that feeds soil microorganisms, improves soil structure, increases water-holding capacity, and provides slow-release nutrients. The RegenerAgri Initiative in Makueni County has successfully trained farmers in bokashi composting—a method that ferments organic matter rapidly using beneficial microorganisms .

Basic composting requires only three ingredients: nitrogen-rich materials (fresh plant matter, manure), carbon-rich materials (dried leaves, straw, crop residues), and water. Layer these materials, keep them moist, turn occasionally, and within two to three months you have rich, dark compost.

Jerald M’Mtunga, a farmer in Meru County, adopted composting on his potato farm. “Using composted manure has helped me cut back on synthetic fertilizers while improving my soil structure with longer-lasting benefits,” he reports. Within two seasons, his potato yields increased from 20 bags to 50 bags per acre .

Green Manure and Cover Cropping

Green manure involves growing specific crops specifically to be incorporated into the soil. The best green manure options for Kenya, which are cheap and well-adapted, include cowpeas (kunde), sorghum, and millet. Ideally, these crops should be cut before flowering when they still have soft stems so they can be dug back into the soil and decompose quickly. However, the benefits can still be realised even if the crop is grown to harvest .

Cover crops are plants grown to cover the soil rather than for harvest. They protect bare soil from erosion, suppress weeds, fix nitrogen (in the case of legumes), and add organic matter. Farmers across Kenya are adopting cover cropping using mucuna, beans, and barley between main crops to fix nitrogen, suppress weeds, reduce erosion, and build organic matter over time .

The Plant Material to Manure Ratio

When adding organic materials directly to soil, the ratio matters. Plant materials such as old stems, leaves, husks, and straw should be chopped and dug into the soil to rot. This plant material is mixed at a rate of about 85 percent with animal manure making up 15 percent. Animal manure helps to increase the rate at which the plant material rots and also returns nutrients into the soil. This can be manure from cows, goats, chickens, or any other livestock .

For a one-metre by one-metre plot, add approximately one handful of this plant material and manure mix. Apply it to the soil at a depth of about 30 centimetres—not as a mulch on the surface .

Step Four: Feed the Soil Biology

Healthy soil is alive. A single teaspoon of healthy soil contains billions of bacteria, fungi, protozoa, and other organisms. These organisms break down organic matter, cycle nutrients, build soil structure, and suppress diseases. Degraded soil has lost much of this biological community. Rebuilding it requires both food (organic matter) and habitat.

Compost Tea

Compost tea is a liquid extract of compost that delivers beneficial microorganisms directly to the soil or plant leaves. It can be made by steeping finished compost in water for 24 to 48 hours, then straining and applying the liquid. For farmers without access to specialised equipment, simple compost tea can be made by placing compost in a porous bag, suspending it in a bucket of water, and agitating periodically.

In the BOOST project, farmers learned to apply organic fertiliser produced on their farms. The result has been dramatic: Agnes Barasa harvested 15 bags of maize from her long-rains crop, up from just three bags previously .

Biochar and Microbial Inoculants

Biochar is charcoal produced from plant matter through pyrolysis (heating in the absence of oxygen). When added to soil, biochar acts as a long-term carbon store, improves water retention, and provides habitat for beneficial microorganisms. The Agriculture and Food Authority is promoting the production of biochar from sugarcane bagasse to produce “bio-mud” organic fertiliser for soil rehabilitation .

For most smallholders, producing biochar requires specialised equipment, but community-level production is becoming more accessible. Microbial inoculants can also be effective. In the sugar sector, elite bacteria strains from soil and mature filter mud are being processed as carriers for microbial inoculants .

Step Five: Adopt Regenerative Farming Practices

Restoration is not a one-time activity. It requires changing the way you farm permanently. The following practices, when adopted together, create a system that builds soil health rather than depleting it.

Minimum Tillage and Residue Retention

Reduced tillage preserves soil structure, organic matter, and moisture. In Tharaka-Nithi County, field experience has shown that farms practicing residue retention can improve soil moisture retention, supporting crop survival and reducing irrigation needs during periods of stress .

Residue retention means keeping crop stalks and leaves on the field after harvest. They protect soil from erosion, conserve moisture, and gradually return carbon and nutrients. This practice alone can significantly reduce input costs.

Intercropping and Crop Rotation

Monocropping has depleted soils across Kenya. The BOOST project identified “prolonged use of chemical fertilisers” and “monocropping…resulted in soils being acidic and poor” . Intercropping (growing two or more crops together) and crop rotation (planting different crops in sequence) diversify the demands on soil, reduce pest pressure, and build fertility.

Agnes Barasa now practices intercropping on her farm, growing maize, groundnuts, bananas, beans, and vegetables together. The diversity has transformed her land from dry and lifeless to lush and productive .

Agroforestry

Trees and crops belong together. Agroforestry—integrating trees into farming systems—provides multiple benefits: tree roots stabilise soil, leaf litter adds organic matter, and trees provide shade, windbreaks, and additional income. In Kanyerus, West Pokot, the community has established a tree nursery, and restoration and tree planting exercises are carried out regularly to improve the entire landscape .

The Kanyerus demonstration site includes a food forest area, kitchen garden area, and improved pasture area. More than 250 hectares of degraded pastureland and natural forest is being restored, and biodiversity has improved .

Step Six: Monitor Progress and Adjust

Soil restoration takes time. You will not see results overnight. But you will see signs of progress: soil that becomes darker and crumblier, water that soaks in rather than running off, crops that grow taller with deeper green leaves.

Measure your progress in simple ways. Check soil structure by digging a small hole and observing how easily the soil crumbles. Watch water infiltration by pouring water on the soil and timing how long it takes to disappear. Track yields per acre season by season.

The BOOST project uses portable scanning devices to diagnose soil deficiencies, revealing problems such as low phosphorus levels and high acidity . For most smallholders, a simple observation of crop health and soil condition is sufficient, but periodic soil testing through your county agriculture office or organisations like SoilCares Africa can provide valuable data.

Real-World Success Stories from Kenyan Farmers

Agnes Barasa (Kimilili, Bungoma County)

Three years ago, Agnes Barasa’s backyard in Maeni village was dry and lifeless. Decades of monocropping, burning of crop residues, and prolonged use of chemical fertilisers had left her soil acidic and poor. Her harvests consistently failed to feed her family of five children.

Through the BOOST project, she learned to stop burning residues, apply organic mulch and compost, and practice intercropping. This year, she harvested 15 bags of maize from her long-rains crop, up from just three bags previously. Her vegetable garden now produces kale, beans, and tomatoes. “I am a happy lady because my soil is yielding where it did not,” she says .

Jerald M’Mtunga (Meru County)

Jerald’s potato fields were struggling with degraded soils and low nutrient levels. By adopting composting, residue retention, and cover cropping, he rebuilt soil health while reducing fertiliser costs. Within two seasons, his potato yields increased from 20 bags to 50 bags per acre. His soil now retains water better during dry spells, and cover crops help suppress weeds naturally .

The Kachelitwa Community (Baringo County)

In early 2024, the Kachelitwa community faced barren, eroded hills that could not sustain their pastoral livelihoods. With support from partners, 35 women and 5 men formed a landscape restoration group that now meets three times a week voluntarily to dig semi-circular bunds, trenches, and heal gullies. Nearly 1,000 bunds have been created. “We never imagined we could transform our land with such simple methods,” a participant said. Neighbouring communities have requested to learn from their experience .

The RegenerAgri Initiative (Makueni County)

In Makueni County, the RegenerAgri Initiative has empowered 122 farmers to regenerate over 300 acres of land in one year. Over 70 percent of participating farms reported major improvements in soil health, 73 percent adopted composting, and 72 percent began using natural pest control. Biodiversity has returned to once-degraded plots, and many farms now thrive even during prolonged dry spells .

Common Mistakes to Avoid

Expecting quick results. Soil restoration takes time. Do not expect barren land to become productive in one season. Commit to a three- to five-year timeline.

Applying only one solution. Composting alone will not fix erosion. Terracing alone will not rebuild fertility. Use an integrated approach combining physical restoration, organic matter addition, and regenerative practices.

Returning to old habits. After investing effort in restoration, a single season of burning residues or deep ploughing can undo years of progress. Commit to permanent change.

Ignoring water. Without adequate water, biological restoration cannot occur. Prioritise water harvesting before adding organic matter.

Overgrazing. For livestock farmers, overgrazing is a primary cause of degradation. Implement rotational grazing systems to give pastures time to recover.

Economic Benefits: What You Gain

Restoring degraded farmland is not only an environmental act—it is an economic investment with measurable returns.

Reduced input costs. Farmers who adopt composting and green manuring reduce their dependence on expensive synthetic fertilisers. Minimum tillage reduces fuel and labour costs .

Increased yields. Agnes Barasa’s maize yield increased from 3 to 15 bags per acre—a fivefold increase . Jerald M’Mtunga’s potato yield increased from 20 to 50 bags per acre—a 150 percent increase .

Income from carbon credits. Farmers practising regenerative agriculture can earn additional income through carbon finance programs. Boomitra’s soil carbon project in Kenya has enrolled nearly 3,730 farmers managing more than 68,000 acres, providing payments linked to the additional carbon stored in their soil .

Resilience to climate extremes. Restored soils hold more water, meaning crops survive dry spells better. The RegenerAgri Initiative reports that many farms now thrive even during prolonged dry spells .

Practical Takeaways for Kenyan Farmers

Start with a small area. Do not try to restore your entire farm at once. Choose the most degraded plot—perhaps half an acre—and focus your efforts there. Once you see results, expand.

Stop harmful practices immediately. Burning crop residues and deep tillage. These changes cost nothing and deliver immediate benefits.

Build physical structures first. On sloping land, construct terraces or bunds before adding organic matter. Without water retention, organic matter will not decompose properly.

Use locally available materials. Compost requires only plant matter and manure. Manure crops can be grown from affordable seeds. Gully healing uses branches and twigs from your own farm.

Connect with extension services. The BOOST project has set up ten agroecology service hubs in five counties. These hubs, managed by trained youth, provide services including land preparation, composting, and pest control at reasonable fees .

Join farmer groups. The RegenerAgri Initiative demonstrates the power of peer-to-peer learning. Farmers who learn together adopt practices faster and more effectively .

Be patient and consistent. Soil restoration takes two to three years before significant results appear. Trust the process and maintain your practices.

Moving Forward: A Call to Action

The degradation of Kenya’s farmland is not inevitable. Across the country, farmers are proving that regeneration is possible, practical, and profitable. The methods described in this guide require no expensive technology or imported inputs. They rely on observation, local materials, and consistent effort.

“Our elders say that we, the youth, have loaned them this land, and they owe a debt to us,” says Lekupes, a young community leader in Isiolo . This sense of intergenerational responsibility is at the heart of land restoration. The land you restore today will feed your children and grandchildren.

The World Food Programme, FAO, Biovision Africa Trust, and other organisations are actively supporting farmers in this work. But the primary agents of restoration are farmers themselves, walking their fields, observing their soil, and making daily decisions that either degrade or regenerate.

“When a gulley dies, it means the land is healing,” and your farm can be part of this healing.

Farmers seeking guidance on soil rehabilitation, composting techniques, agroecological practices, and quality inputs can contact Organic Farm via website: www.organicfarm.co.ke, Call or WhatsApp: +254712075915, or email: oxfarmorganic@gmail.com.