Growing Pumpkin in Samburu
Soil suitability analysis based on Samburu's nutrient profile
Generally not ideal — Samburu is poorly suited to Pumpkin. Samburu's soil (pH 8.28, alkaline) gives Pumpkin a suitability score of 28/100. Match fertilizer to Samburu's nitrogen and phosphorus levels for the best result.
Samburu County is a challenging environment for Pumpkin (soil-match score 28/100) and will need significant amendment before planting. At an average pH of 8.28 the soil sits above Pumpkin's preferred 5.8–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.67 g/kg, P 42.1 mg/kg, K 387 mg/kg against this crop's medium/medium/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Pumpkin, which favours sandy loam. Samburu receives approximately 350 mm/year — well below Pumpkin's minimum of 500 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Pumpkin is the #28 soil match of the 106 crops we assess for Samburu County. Pumpkin's full potential is about 10,000 kg/acre (~KES 300,000/acre at KES 30/kg), but at Samburu's 28/100 suitability a realistic target here is closer to 3,500 kg/acre (~KES 105,000/acre) unless the constraints above are addressed.
Better matched to Samburu's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Samburu soil | Pumpkin needs | Status |
|---|---|---|---|
| pH | 8.28 | 5.8–7.5 | Adjust |
| Nitrogen | 0.67 g/kg | min 0.8 g/kg | Low |
| Phosphorus | 42.1 mg/kg | min 12 mg/kg | OK |
| Potassium | 387 mg/kg | min 200 mg/kg | OK |
| Rainfall | 350 mm | 500–1,200 mm | Low |
| Altitude | 900 m | 0–2,100 m | OK |
Planting calendar for Samburu
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Samburu's nitrogen (0.67 g/kg) is 84% of the 0.8 g/kg Pumpkin needs, so the standard 0.4 bags/acre is raised to 0.5. Split it across two applications to limit leaching.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag