Growing Pixie Oranges in Turkana

Soil suitability analysis based on Turkana's nutrient profile

Quick answer

Generally not ideal — Turkana is poorly suited to Pixie Oranges. Turkana's soil (pH 7.95, alkaline) gives Pixie Oranges a suitability score of 2/100. Match fertilizer to Turkana's nitrogen and phosphorus levels for the best result.

Turkana County is a challenging environment for Pixie Oranges (soil-match score 2/100) and will need significant amendment before planting. At an average pH of 7.95 the soil sits above Pixie Oranges's preferred 5.5–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.41 g/kg, P 38.5 mg/kg, K 417 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 Pixie Oranges, which favours sandy loam. Turkana receives approximately 300 mm/year — well below Pixie Oranges's minimum of 600 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Pixie Oranges is the #83 soil match of the 106 crops we assess for Turkana County. Pixie Oranges's full potential is about 8,000 kg/acre (~KES 224,000/acre at KES 28/kg), but at Turkana's 2/100 suitability a realistic target here is closer to 200 kg/acre (~KES 5,600/acre) unless the constraints above are addressed.

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

2Suitability score

Soil & climate match

FactorTurkana soilPixie Oranges needsStatus
pH7.955.57.5Adjust
Nitrogen0.41 g/kgmin 0.8 g/kgLow
Phosphorus38.5 mg/kgmin 12 mg/kgOK
Potassium417 mg/kgmin 200 mg/kgOK
Rainfall300 mm600–1,200 mmLow
Altitude400 m1,000–2,000 mLow

Top dressing guide

Product
CAN
Timing
Biannual start of rains
Instruction
Apply in a ring around the drip line. Foliar zinc and manganese every season for fruit quality.
Bags per acre in Turkana
0.750.5

Turkana's nitrogen (0.41 g/kg) is 51% of the 0.8 g/kg Pixie Oranges needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.

Recommended seed varieties

No variety in our list is specifically rated for Turkana's 400 m altitude and 300 mm rainfall, so all 2 are shown. Confirm with your agrovet before buying.

PixieMedium/Highland
KALRO/HCDA · 1000-1500 days · 7.2–10.8 tons/acre
Seedless; thin skin; excellent sweetness; high export demand.
Washington NavelMedium
KALRO · 1000-1500 days · 6.3–9 tons/acre
Large navel orange; seedless; good fresh market variety.

Economics

Market priceKES 28/kg
Expected yield in Turkana200 kg/acre
Estimated revenueKES 5,600/acre
Adjusted for Turkana's 2/100 suitability. Under ideal conditions Pixie Oranges can reach 8,000 kg/acre (~KES 224,000/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