Growing Radish in Tana River

Soil suitability analysis based on Tana River's nutrient profile

Tana River County is a challenging environment for Radish (soil-match score 9/100) and will need significant amendment before planting. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 6–7.5 band Radish prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 1.04 g/kg, P 8.5 mg/kg, K 108 mg/kg against this crop's medium/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy soils suit Radish, which favours sandy loam. At 200 m, the county sits below Radish's preferred altitude range (500–2500 m), which limits yield potential due to heat stress. Radish's full potential is about 8,000 kg/acre (~KES 320,000/acre at KES 40/kg), but at Tana River's 9/100 suitability a realistic target here is closer to 900 kg/acre (~KES 36,000/acre) unless the constraints above are addressed.