Growing Butternut Squash in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Quick answer

Generally not ideal — Mandera is poorly suited to Butternut Squash. Mandera's soil (pH 8.38, alkaline) gives Butternut Squash a suitability score of 6/100. Match fertilizer to Mandera's nitrogen and phosphorus levels for the best result.

Mandera County is a challenging environment for Butternut Squash (soil-match score 6/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Butternut Squash's preferred 5.5–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.53 g/kg, P 38.3 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 Butternut Squash, which favours sandy loam. Mandera receives approximately 180 mm/year — well below Butternut Squash's minimum of 500 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Butternut Squash is the #28 soil match of the 106 crops we assess for Mandera County. Butternut Squash's full potential is about 10,000 kg/acre (~KES 400,000/acre at KES 40/kg), but at Mandera's 6/100 suitability a realistic target here is closer to 750 kg/acre (~KES 30,000/acre) unless the constraints above are addressed.

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

6Suitability score

Soil & climate match

FactorMandera soilButternut Squash needsStatus
pH8.385.57.5Adjust
Nitrogen0.53 g/kgmin 0.8 g/kgLow
Phosphorus38.3 mg/kgmin 12 mg/kgOK
Potassium420 mg/kgmin 200 mg/kgOK
Rainfall180 mm500–1,200 mmLow
Altitude250 m0–2,000 mOK

Planting calendar

Long Rains

Month 1
Sowing hills & Basal Fertilizer (NPK)
Month 2
Vine Training & Top Dressing
Month 3
Fruit Set Monitoring & Harvesting

Short Rains

Month 1
Sowing & Basal Fertilizer
Month 2
Vine Management & Pest Scouting
Month 3
Harvesting & Curing

Dry Season

Month 1
Harvesting & Storage
Month 2
Land Preparation & Manure Application
Month 3
Seed Selection & Drying

Top dressing guide

Product
CAN
Timing
Week 4-5 at vining
Instruction
Apply when vines begin to run, before flowering; keep granules off the stems
Bags per Acre
1

Recommended seed varieties

Atlas F1Medium/Dryland
East Africa Seeds · 75-90 days · 6–9 tons/acre
High yielding butternut; uniform pear-shaped fruits; good shelf life for export.
WalthamMedium
Simlaw Seeds · 80-95 days · 5–8 tons/acre
Open-pollinated butternut; sweet orange flesh; reliable yield; good local market.
Pluto F1Medium/Dryland
Royal Seeds · 75-90 days · 6.5–9.5 tons/acre
Vigorous hybrid; powdery mildew tolerant; excellent export quality.

Economics

Market priceKES 40/kg
Expected yield in Mandera750 kg/acre
Estimated revenueKES 30,000/acre
Adjusted for Mandera's 6/100 suitability. Under ideal conditions Butternut Squash can reach 10,000 kg/acre (~KES 400,000/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