Growing Tea in Machakos

Soil suitability analysis based on Machakos's nutrient profile

Machakos County is a challenging environment for Tea (soil-match score 12/100) and will need significant amendment before planting. At an average pH of 7.03 the soil sits above Tea's preferred 4.5–6 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.82 g/kg, P 31.4 mg/kg, K 338 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Tea prefers clay soils, while Machakos is largely sandy loam, so drainage and organic-matter management matter more here. Machakos receives approximately 700 mm/year — well below Tea's minimum of 1100 mm — so supplemental irrigation would be essential for this crop. Tea's full potential is about 2,200 kg/acre (~KES 55,000/acre at KES 25/kg), but at Machakos's 12/100 suitability a realistic target here is closer to 330 kg/acre (~KES 8,250/acre) unless the constraints above are addressed.