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Siaya County Soil Health Report

Lake Victoria Basin agroecological zone

Data: iSDAsoil 30m satellite mapping · Updated 2026

60Soil Health

Nutrient Breakdown

pH
5.33 Acidic
Total Nitrogen
1.2 g/kgAdequate
Extractable Phosphorus
12.1 mg/kgModerate
Extractable Potassium
134 mg/kgLow
Organic Carbon
15.3 g/kgModerate

Best Crops for Siaya

Scored against Siaya's soil nutrients

Sorghum100/100
Clay · KES 80/kg
Finger Millet100/100
Sandy · KES 100/kg
Cowpeas100/100
Sandy · KES 80/kg
Pigeon Peas100/100
Sandy · KES 90/kg
Tea97/100
Clay · KES 25/kg
Cassava97/100
Sandy · KES 15/kg
Macadamia97/100
Loam · KES 150/kg
Rice (Upland)97/100
Clay · KES 120/kg

Wards in Siaya

30 wards across 6 sub-counties — click for precision soil data

Alego Usonga Sub-County

Central AlegoNorth AlegoSiaya TownshipSouth East AlegoUsongaWest Alego

Bondo Sub-County

Central SakwaNorth SakwaSouth SakwaWest SakwaWest YimboYimbo East

Gem Sub-County

Central GemEast GemNorth GemSouth GemWest GemYala Township

Rarieda Sub-County

East AsemboNorth UyomaSouth UyomaWest AsemboWest Uyoma

Ugenya Sub-County

East UgenyaNorth UgenyaUkwalaWest Ugenya

Ugunja Sub-County

SidindiSigomereUgunja

Neighboring Counties

BusiaWestern
60/100
VihigaWestern
70/100
KisumuLake Victoria Basin
70/100

Agrovets in Siaya

Siaya Farm Centre
Siaya Town

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