Growing Sweet Orange in Wajir

Soil suitability analysis based on Wajir's nutrient profile

Wajir County is a challenging environment for Sweet Orange (soil-match score 5/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Sweet Orange's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 39.3 mg/kg, K 396 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. Sweet Orange prefers loam soils, while Wajir is largely sandy, so drainage and organic-matter management matter more here. Wajir receives approximately 200 mm/year — well below Sweet Orange's minimum of 600 mm — so supplemental irrigation would be essential for this crop. Sweet Orange's full potential is about 12,000 kg/acre (~KES 600,000/acre at KES 50/kg), but at Wajir's 5/100 suitability a realistic target here is closer to 750 kg/acre (~KES 37,500/acre) unless the constraints above are addressed.