Growing Sorghum in Nyeri

Soil suitability analysis based on Nyeri's nutrient profile

Quick answer

Possible but challenging — Nyeri is only marginally suited to Sorghum. Nyeri's soil (pH 5.23, strongly acidic) gives Sorghum a suitability score of 47/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Sorghum can be grown in Nyeri County, but the soil scores 47/100 and needs targeted management to reach full potential. Local soils average pH 5.23 — moderately acidic and inside the 5–8 band Sorghum prefers, so no lime is usually required. Nitrogen (1.09 g/kg), phosphorus (15.5 mg/kg) and potassium (192 mg/kg) all meet Sorghum's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay soils suit Sorghum, which favours clay. On ShambaIQ's soil-match model, Sorghum is the #87 soil match of the 106 crops we assess for Nyeri County. Sorghum's full potential is about 1,200 kg/acre (~KES 81,600/acre at KES 68/kg), but at Nyeri's 47/100 suitability a realistic target here is closer to 705 kg/acre (~KES 47,940/acre) unless the constraints above are addressed.

Better matched to Nyeri's soil: Macadamia, Pineapple, and Avocado — each scores higher on the same soil.

47Suitability score

Soil & climate match

FactorNyeri soilSorghum needsStatus
pH5.2358OK
Nitrogen1.09 g/kgmin 0.5 g/kgOK
Phosphorus15.5 mg/kgmin 6 mg/kgOK
Potassium192 mg/kgmin 100 mg/kgOK
Rainfall1,200 mm250–700 mmHigh
Altitude1,700 m0–1,800 mOK

Planting calendar for Nyeri

Long Rains· MarchMayMain season here

March
Sowing & Basal Fertilizer
April
Top Dressing & 1st Weeding
May
Bird Control & Scouting

Short Rains· OctoberDecember

October
Sowing & Basal Fertilizer
November
Top Dressing & 1st Weeding
December
Bird Control

Dry Season· JanuaryMarch

January
Harvesting & Drying
February
Land Resting
March
Seed Selection

Top dressing guide

Product
CAN
Timing
Week 4 and at flowering
Instruction
Apply at vegetative stage then repeat at early flowering for grain development.
Bags per acre in Nyeri
0.5

Nyeri's nitrogen (1.09 g/kg) already meets Sorghum's 0.5 g/kg requirement, so this is a maintenance rate.

Seed varieties for Nyeri

Varieties suited to Nyeri's 1,700 m altitude and 1,200 mm annual rainfall — 1 of 2 sorghum varieties we list.

SeredoMedium/Dryland
KALRO · 110-120 days · 15-18 bags/acre
Brown grain; excellent bird resistance.

Economics

Market priceKES 68/kg
Expected yield in Nyeri705 kg/acre
Estimated revenueKES 47,940/acre
Adjusted for Nyeri's 47/100 suitability. Under ideal conditions Sorghum can reach 1,200 kg/acre (~KES 81,600/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureClay

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