Growing Butternut Squash in Marsabit

Soil suitability analysis based on Marsabit's nutrient profile

Quick answer

Generally not ideal — Marsabit is poorly suited to Butternut Squash. Marsabit's soil (pH 8.22, alkaline) gives Butternut Squash a suitability score of 20/100. Match fertilizer to Marsabit's nitrogen and phosphorus levels for the best result.

Marsabit County is a challenging environment for Butternut Squash (soil-match score 20/100) and will need significant amendment before planting. At an average pH of 8.22 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 0.52 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 Butternut Squash, which favours sandy loam. Marsabit receives approximately 300 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 #33 soil match of the 106 crops we assess for Marsabit County. Butternut Squash's full potential is about 10,000 kg/acre (~KES 400,000/acre at KES 40/kg), but at Marsabit's 20/100 suitability a realistic target here is closer to 2,500 kg/acre (~KES 100,000/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.

20Suitability score

Soil & climate match

FactorMarsabit soilButternut Squash needsStatus
pH8.225.5–7.5Adjust
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 m0–2,000 mOK

Planting calendar for Marsabit

Long Rains· March–May

March
Sowing hills & Basal Fertilizer (NPK)
April
Vine Training & Top Dressing
May
Fruit Set Monitoring & Harvesting

Short Rains· October–DecemberMain season here

October
Sowing & Basal Fertilizer
November
Vine Management & Pest Scouting
December
Harvesting & Curing

Dry Season· January–March

January
Harvesting & Storage
February
Land Preparation & Manure Application
March
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 in Marsabit
1.51

Marsabit's nitrogen (0.52 g/kg) is 65% of the 0.8 g/kg Butternut Squash needs, so the standard 1 bag/acre is raised to 1.5. Split it across two applications to limit leaching.

Seed varieties for Marsabit

2 butternut squash varieties are rated for Marsabit's altitude (1,100 m) and rainfall (300 mm):

Atlas F1· Medium/DrylandPluto F1· Medium/Dryland
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 40/kg
Expected yield in Marsabit2,500 kg/acre
Estimated revenueKES 100,000/acre
Adjusted for Marsabit's 20/100 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