Growing Taro (Nduma) in Machakos

Soil suitability analysis based on Machakos's nutrient profile

Machakos County is a challenging environment for Taro (Nduma) (soil-match score 37/100) and will need significant amendment before planting. At an average pH of 7.03 the soil sits above Taro (Nduma)'s preferred 5.5–6.5 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.82 g/kg), phosphorus (31.4 mg/kg) and potassium (338 mg/kg) all meet Taro (Nduma)'s requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Taro (Nduma), which favours loam. Machakos receives approximately 700 mm/year — well below Taro (Nduma)'s minimum of 1000 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Taro (Nduma) is the #86 soil match of the 106 crops we assess for Machakos County. Taro (Nduma)'s full potential is about 7,000 kg/acre (~KES 630,000/acre at KES 90/kg), but at Machakos's 37/100 suitability a realistic target here is closer to 3,238 kg/acre (~KES 291,420/acre) unless the constraints above are addressed.

Better matched to Machakos's soil: Mango, Sisal, and Moringa — each scores higher on the same soil.