Is Machakos good for growing African Nightshade?

Machakos County scores 62/100 for African Nightshade suitability (good). Soil pH is 7.03 against a preferred 5.5–7.5, nitrogen 0.82 g/kg and phosphorus 31.4 mg/kg. County rainfall is 700 mm/year against African Nightshade's 800–1500 mm range. This is a workable match for African Nightshade.

What fertilizer is best for African Nightshade in Machakos?

Base the plan on Machakos's soil: pH 7.03, nitrogen 0.82 g/kg and phosphorus 31.4 mg/kg. Get an exact bag-per-acre basal and top-dressing schedule free at https://shambaiq.com/app.

What soil pH does African Nightshade need, and does Machakos have it?

African Nightshade grows best at pH 5.5–7.5. Machakos averages pH 7.03, which is within that range.

How much can I earn from African Nightshade per acre in Machakos?

At roughly KES 50/kg and an expected 5,000 kg/acre, gross revenue is about KES 250,000 per acre before input costs. Use the ShambaIQ budget tool for a net figure based on your fertilizer plan.

Growing African Nightshade in Machakos

Soil suitability analysis based on Machakos's nutrient profile

Quick answer

Yes, with the right inputs — Machakos is moderately suited to African Nightshade. Machakos's soil (pH 7.03, near-neutral) gives African Nightshade a suitability score of 62/100. Match fertilizer to Machakos's nitrogen and phosphorus levels for the best result.

Machakos County is a solid choice for African Nightshade, with a soil-match score of 62/100. Local soils average pH 7.03 — neutral and inside the 5.5–7.5 band African Nightshade prefers, so no lime is usually required. The main gap is nitrogen — measured at N 0.82 g/kg, P 31.4 mg/kg, K 338 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit African Nightshade, which favours loam. On ShambaIQ's soil-match model, African Nightshade is the #74 soil match of the 106 crops we assess for Machakos County. African Nightshade's full potential is about 5,000 kg/acre (~KES 250,000/acre at KES 50/kg), but at Machakos's 62/100 suitability a realistic target here is closer to 3,875 kg/acre (~KES 193,750/acre) unless the constraints above are addressed.

Suitability score

Soil & climate match

Factor	Machakos soil	African Nightshade needs	Status
pH	7.03	5.5–7.5	OK
Nitrogen	0.82 g/kg	min 1.2 g/kg	Low
Phosphorus	31.4 mg/kg	min 12 mg/kg	OK
Potassium	338 mg/kg	min 150 mg/kg	OK
Rainfall	700 mm	800–1,500 mm	Low
Altitude	1,100 m	1,000–2,200 m	OK

Planting calendar for Machakos

Long Rains· March–May

March

Transplanting & Basal Fertilizer (DAP)

April

First Harvest (leaf picking) & Top Dressing

May

Continuous Leaf Harvest

Short Rains· October–DecemberMain season here

October

Transplanting & Basal Fertilizer

November

Weeding & Pest Control

December

Harvesting & Market

Dry Season· January–March

January

Irrigation & Continuous Harvesting

February

Top Dressing (CAN) every 2 weeks

March

Replanting if stand is old

Top dressing guide

Product

CAN

Timing

Week 2-3 after transplanting

Instruction

Top dress 2-3 weeks after transplanting and after each picking to push tender leaf regrowth

Bags per acre in Machakos

1.51

Machakos's nitrogen (0.82 g/kg) is 68% of the 1.2 g/kg African Nightshade needs, so the standard 1 bag/acre is raised to 1.5. Split it across two applications to limit leaching.

Recommended seed varieties

No variety in our list is specifically rated for Machakos's 1,100 m altitude and 700 mm rainfall, so all 3 are shown. Confirm with your agrovet before buying.

Managu KALROMedium/Highland

KALRO · 30-45 days · 2.5–4 tons/acre

Indigenous leafy vegetable; high iron and vitamin A; multiple harvests; very popular in Western Kenya.

Giant NightshadeMedium/Highland

Simlaw Seeds · 35-50 days · 2.8–4.3 tons/acre

Large-leaved selection; soft palatable leaves; high market demand.

OlevolosiMedium

KALRO · 30-45 days · 2.3–3.8 tons/acre

Broad-leaf type; slow bolting; continuous picking; drought tolerant.

Economics

Market priceKES 50/kg

Expected yield in Machakos3,875 kg/acre

Estimated revenueKES 193,750/acre

Adjusted for Machakos's 62/100 suitability. Under ideal conditions African Nightshade 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

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