Growing Dhania in Garissa

Soil suitability analysis based on Garissa's nutrient profile

Garissa County is a challenging environment for Dhania (soil-match score 18/100) and will need significant amendment before planting. At an average pH of 7.96 the soil sits above Dhania's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.61 g/kg), phosphorus (37.7 mg/kg) and potassium (407 mg/kg) all meet Dhania's requirements, so a maintenance fertilizer programme is enough. Dhania prefers loam soils, while Garissa is largely sandy, so drainage and organic-matter management matter more here. Garissa receives approximately 250 mm/year — well below Dhania's minimum of 500 mm — so supplemental irrigation would be essential for this crop. Dhania's full potential is about 1,500 kg/acre (~KES 112,500/acre at KES 75/kg), but at Garissa's 18/100 suitability a realistic target here is closer to 338 kg/acre (~KES 25,350/acre) unless the constraints above are addressed.