Kiambu county soil health report

Soil suitability and agriculture in Kiambu County

Understanding the local soil chemistry is essential for optimizing crop yields and selecting the right inputs in Kiambu County. Situated within the Central Highlands zone, this region features varied soil profiles that directly influence crop suitability. With a recorded average soil pH of 5.28, farming practices must adapt to balance acidity or alkalinity to ensure optimal plant nutrient availability.

The major soil type here ranges across different sub-counties, requiring tailored fertilizer applications. For crops in Kiambu, standard DAP or NPK inputs may need to be adjusted based on the nitrogen (recorded at 1.01 g/kg) and extractable phosphorus (recorded at 13.7 mg/kg) levels. In acidic regions, applying agricultural lime is recommended to raise soil pH before planting, unlocking bound nutrients and preventing common yield deficiencies.