Ins And Outs of Groundnut Farming in Kenya

Exploring Groundnut Farming in Kenya


Why consider groundnuts farming?


Groundnuts, also known as peanuts, offer numerous benefits. They are rich in oil (38-50%), protein (25%), and essential nutrients such as calcium, magnesium, phosphorus, potassium, and vitamins. Beyond their nutritional value, groundnuts are reported to have medicinal properties, aiding in the treatment of conditions like diarrhea and hemophilia. Additionally, groundnuts are versatile; they are processed into cooking oil, peanut butter, and flour. Consuming groundnuts is linked to various health benefits, including fertility enhancement, depression alleviation, improved memory, blood sugar control, cancer prevention, and heart health.


Climate, Water, and Soil Requirements


Groundnuts thrive in warm tropical and subtropical climates below 1500 meters above sea level. Optimal temperatures for growth range from 15°C to 30°C, with frost being detrimental to the crop. While groundnuts are drought-resistant, adequate water (500-600 mm) distributed throughout the growing season is crucial for optimal yield. Well-drained sandy or sandy loam soils are ideal, although groundnuts can also grow in heavier clay soils. However, wet harvesting should be avoided to prevent the development of aflatoxin, a harmful toxin produced by certain fungi.


Crop Propagation and Soil Conditions


Most soils, except very heavy ones, are suitable for groundnut cultivation. Deep, well-drained sandy soils are preferred, with a pH range of 5.5 to 7.3. Groundnut plants are sensitive to salinity and acidic soils, which can induce magnesium or aluminum toxicity. Seed dressing with fungicide is recommended to control soil-borne diseases.


Planting and Spacing


Planting should occur as soon as there is adequate soil moisture. Groundnut seeds should be sown at a depth of 5-6 cm, with rows spaced according to the variety’s growth habit. Close spacing helps reduce weed competition and promotes uniform pod maturity.


Fertilization and Rotation


Groundnuts require adequate levels of phosphorus, potassium, magnesium, and calcium for optimal growth. Organic matter should be maintained in tropical soils. Rotation with cereals or root crops is recommended to mitigate pest and disease buildup. Avoid continuous groundnut cultivation on the same land.


Pests and Diseases


Common groundnut pests and diseases include damping-off, leaf spot, rust, bacterial wilt, and aflatoxin contamination. Cultural practices such as crop rotation, early sowing, and field sanitation help manage these challenges. Chemical control methods and resistant varieties are also available.


Harvesting and Post-Harvest Practices


Groundnuts should be harvested promptly when mature to avoid aflatoxin contamination. Proper drying and storage practices are crucial to maintain quality and prevent aflatoxin formation. Mechanical damage during harvesting and processing should be minimized to ensure marketability.




Groundnuts farming in Kenya offers a promising opportunity for both small-scale and large-scale farmers. With the right agronomic practices and pest management strategies, farmers can achieve higher yields and contribute to food security while tapping into the nutritional and economic benefits of this versatile crop.