Growing Pumpkin in Marsabit

Soil suitability analysis based on Marsabit's nutrient profile

Quick answer

Generally not ideal — Marsabit is poorly suited to Pumpkin. Marsabit's soil (pH 8.22, alkaline) gives Pumpkin a suitability score of 21/100. Match fertilizer to Marsabit's nitrogen and phosphorus levels for the best result.

Marsabit County is a challenging environment for Pumpkin (soil-match score 21/100) and will need significant amendment before planting. At an average pH of 8.22 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 0.52 g/kg, P 37.3 mg/kg, K 420 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. Marsabit receives approximately 300 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 #27 soil match of the 106 crops we assess for Marsabit County. Pumpkin's full potential is about 10,000 kg/acre (~KES 300,000/acre at KES 30/kg), but at Marsabit's 21/100 suitability a realistic target here is closer to 2,625 kg/acre (~KES 78,750/acre) unless the constraints above are addressed.

Better matched to Marsabit's soil: Sisal, Chia, and Aloe Vera — each scores higher on the same soil.

21Suitability score

Soil & climate match

FactorMarsabit soilPumpkin needsStatus
pH8.225.87.5Adjust
Nitrogen0.52 g/kgmin 0.8 g/kgLow
Phosphorus37.3 mg/kgmin 12 mg/kgOK
Potassium420 mg/kgmin 200 mg/kgOK
Rainfall300 mm500–1,200 mmLow
Altitude1,100 m0–2,100 mOK

Planting calendar for Marsabit

Long Rains· MarchMay

March
Direct Sowing & Basal
April
Vine Management & Top Dressing
May
Fruit Development & Harvest

Short Rains· OctoberDecemberMain season here

October
Direct Sowing & Basal
November
Vine Management
December
Fruit Development & Harvest

Top dressing guide

Product
CAN
Timing
Week 4 and at vine-run
Instruction
Top-dress when vines begin to run. Add potassium at fruit set.
Bags per acre in Marsabit
0.50.4

Marsabit's nitrogen (0.52 g/kg) is 65% 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

Market priceKES 30/kg
Expected yield in Marsabit2,625 kg/acre
Estimated revenueKES 78,750/acre
Adjusted for Marsabit's 21/100 suitability. Under ideal conditions Pumpkin can reach 10,000 kg/acre (~KES 300,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(5,700)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag