Growing Vine Spinach (Nderema) in Wajir

Soil suitability analysis based on Wajir's nutrient profile

Quick answer

Generally not ideal — Wajir is poorly suited to Vine Spinach (Nderema). Wajir's soil (pH 8.4, alkaline) gives Vine Spinach (Nderema) a suitability score of 3/100. Match fertilizer to Wajir's nitrogen and phosphorus levels for the best result.

Wajir County is a challenging environment for Vine Spinach (Nderema) (soil-match score 3/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Vine Spinach (Nderema)'s preferred 5.8–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 39.3 mg/kg, K 396 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Vine Spinach (Nderema) prefers loam soils, while Wajir is largely sandy, so drainage and organic-matter management matter more here. Wajir receives approximately 200 mm/year — well below Vine Spinach (Nderema)'s minimum of 800 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Vine Spinach (Nderema) is the #54 soil match of the 106 crops we assess for Wajir County. Vine Spinach (Nderema)'s full potential is about 5,000 kg/acre (~KES 250,000/acre at KES 50/kg), but at Wajir's 3/100 suitability a realistic target here is closer to 188 kg/acre (~KES 9,400/acre) unless the constraints above are addressed.

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

3Suitability score

Soil & climate match

FactorWajir soilVine Spinach (Nderema) needsStatus
pH8.45.87Adjust
Nitrogen0.52 g/kgmin 1.2 g/kgLow
Phosphorus39.3 mg/kgmin 12 mg/kgOK
Potassium396 mg/kgmin 150 mg/kgOK
Rainfall200 mm800–1,800 mmLow
Altitude250 m0–2,000 mOK

Planting calendar for Wajir

Long Rains· MarchMay

March
Direct Sowing & Basal
April
Trellising & Top Dressing
May
Continuous Harvest

Short Rains· OctoberDecemberMain season here

October
Direct Sowing & Basal
November
Trellising & Top Dressing
December
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 2 and after each harvest
Instruction
Top-dress after each cutting for continuous leafy regrowth.
Bags per acre in Wajir
0.50.3

Wajir's nitrogen (0.52 g/kg) is 43% of the 1.2 g/kg Vine Spinach (Nderema) needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 50/kg
Expected yield in Wajir188 kg/acre
Estimated revenueKES 9,400/acre
Adjusted for Wajir's 3/100 suitability. Under ideal conditions Vine Spinach (Nderema) can reach 5,000 kg/acre (~KES 250,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

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