Growing Soybeans in Tana River

Soil suitability analysis based on Tana River's nutrient profile

Tana River County is a challenging environment for Soybeans (soil-match score 37/100) and will need significant amendment before planting. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 5–7 band Soybeans 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 low/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. Soybeans prefers loam soils, while Tana River is largely sandy, so drainage and organic-matter management matter more here. Tana River receives approximately 400 mm/year — well below Soybeans's minimum of 600 mm — so supplemental irrigation would be essential for this crop. Soybeans's full potential is about 700 kg/acre (~KES 52,500/acre at KES 75/kg), but at Tana River's 37/100 suitability a realistic target here is closer to 324 kg/acre (~KES 24,300/acre) unless the constraints above are addressed.