Is Kajiado good for growing Sweet Potato?

Kajiado County scores 58/100 for Sweet Potato suitability (moderate). Soil pH is 6.55 against a preferred 4.5–7, nitrogen 0.97 g/kg and phosphorus 20.6 mg/kg. County rainfall is 500 mm/year against Sweet Potato's 600–1800 mm range. Soil amendments or irrigation may be needed before planting Sweet Potato.

What fertilizer is best for Sweet Potato in Kajiado?

Base the plan on Kajiado's soil: pH 6.55, nitrogen 0.97 g/kg and phosphorus 20.6 mg/kg. Get an exact bag-per-acre basal and top-dressing schedule free at https://shambaiq.com/app.

What soil pH does Sweet Potato need, and does Kajiado have it?

Sweet Potato grows best at pH 4.5–7. Kajiado averages pH 6.55, which is within that range.

How much can I earn from Sweet Potato per acre in Kajiado?

At roughly KES 18/kg and an expected 5,000 kg/acre, gross revenue is about KES 90,000 per acre before input costs. Use the ShambaIQ budget tool for a net figure based on your fertilizer plan.

Growing Sweet Potato in Kajiado

Soil suitability analysis based on Kajiado's nutrient profile

Quick answer

Yes, with the right inputs — Kajiado is moderately suited to Sweet Potato. Kajiado's soil (pH 6.55, near-neutral) gives Sweet Potato a suitability score of 58/100. Match fertilizer to Kajiado's nitrogen and phosphorus levels for the best result.

Sweet Potato can be grown in Kajiado County, but the soil scores 58/100 and needs targeted management to reach full potential. Local soils average pH 6.55 — neutral and inside the 4.5–7 band Sweet Potato prefers, so no lime is usually required. Nitrogen (0.97 g/kg), phosphorus (20.6 mg/kg) and potassium (257 mg/kg) all meet Sweet Potato's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Sweet Potato, which favours sandy loam. On ShambaIQ's soil-match model, Sweet Potato is the #62 soil match of the 106 crops we assess for Kajiado County. Sweet Potato's full potential is about 5,000 kg/acre (~KES 90,000/acre at KES 18/kg), but at Kajiado's 58/100 suitability a realistic target here is closer to 3,625 kg/acre (~KES 65,250/acre) unless the constraints above are addressed.

Better matched to Kajiado's soil: Sorghum, Cowpeas, and Pigeon Peas — each scores higher on the same soil.

Suitability score

Soil & climate match

Factor	Kajiado soil	Sweet Potato needs	Status
pH	6.55	4.5–7	OK
Nitrogen	0.97 g/kg	min 0.5 g/kg	OK
Phosphorus	20.6 mg/kg	min 12 mg/kg	OK
Potassium	257 mg/kg	min 200 mg/kg	OK
Rainfall	500 mm	600–1,800 mm	Low
Altitude	1,300 m	0–2,200 m	OK

Planting calendar for Kajiado

Long Rains· March–May

March

Vine Cutting Planting & Basal Fertilizer

April

Weeding & Vine Management

May

Harvesting & Storage

Short Rains· October–DecemberMain season here

October

Vine Planting & Basal Fertilizer

November

Vine Trailing & Weeding

December

Harvesting

Dry Season· January–March

January

Irrigation & Vine Planting

February

Weeding

March

Harvesting & Vine Multiplication

Top dressing guide

Product

None

Timing

None required

Instruction

Sweet potatoes rarely need top dressing. Excess N promotes vines over tubers.

Bags per acre in Kajiado

Kajiado's nitrogen reads 0.97 g/kg, but the rate stays at zero: Sweet Potato is not top-dressed, for the crop-specific reason above.

Seed varieties for Kajiado

Varieties suited to Kajiado's 1,300 m altitude and 500 mm annual rainfall — 3 of 5 sweet potato varieties we list.

KabodeMedium/Dryland

CIP/KALRO · 120-150 days · 3–4 tons/acre

Orange-fleshed; high Vitamin A; drought tolerant.

Kenspot 5Medium/Highland

KALRO · 90-120 days · 4–5 tons/acre

Purple-skinned; excellent taste; good market demand.

VitamuMedium/Highland

KALRO · 120-150 days · 3.5–4.5 tons/acre

Orange-fleshed; dual purpose grain and fodder; KEPHIS certified; 1200-1800m; released 2015.

Economics

Market priceKES 18/kg

Expected yield in Kajiado3,625 kg/acre

Estimated revenueKES 65,250/acre

Adjusted for Kajiado's 58/100 suitability. Under ideal conditions Sweet Potato can reach 5,000 kg/acre (~KES 90,000/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

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