How to Grow Soybean
Soybean (Glycine max) is a cash crop crop that yields 1.5–4 tonnes per hectare and takes 90–140 days from planting to harvest. It grows best in well-drained loam, pH 6.0–7.0; requires bradyrhizobium inoculation for n-fixation, needs 450–700 mm of water, and is widely grown in Nigeria, Ghana, Uganda, Ethiopia. The current average farm-gate price on GeraFarm is about $0.48 per kg.
Yield / hectare
1.5–4 tonnes
Time to harvest
90–140 days from planting
Avg. price
$0.48/kg
Top regions
Nigeria, Ghana
About Soybean
Soybean is the fastest-growing grain legume in sub-Saharan Africa, driven by demand from poultry feed millers and vegetable oil processors. Nigerian production has doubled in five years.
Soybean growing facts
- Scientific name
- Glycine max
- Category
- Cash Crop
- Yield per hectare
- 1.5–4 tonnes
- Time to harvest
- 90–140 days from planting
- Growing season
- May–June planting; harvest October–November (Northern hemisphere)
- Avg. farm-gate price
- $0.48 / kg
- Soil requirements
- Well-drained loam, pH 6.0–7.0; requires Bradyrhizobium inoculation for N-fixation
- Water requirements
- 450–700 mm; critical at flowering and pod-fill
How to grow soybean, step by step
- 1
Prepare soil to the crop’s needs
Test and prepare your soil to match soybean's requirement: Well-drained loam, pH 6.0–7.0; requires Bradyrhizobium inoculation for N-fixation. Correct pH and add organic matter before planting.
- 2
Plant in the right window
Plant during the recommended season: May–June planting; harvest October–November (Northern hemisphere). Use certified seed or healthy planting material to avoid carrying over disease.
- 3
Irrigate to target
Supply 450–700 mm; critical at flowering and pod-fill. Even, well-timed moisture during the critical growth stages drives yield and quality.
- 4
Scout and protect against disease
Watch for Asian soybean rust and Soybean cyst nematode. Rotate crops, keep good spacing for airflow, and act early — AI disease-scan apps can warn you days before damage is visible.
- 5
Harvest at the right time
Harvest after 90–140 days from planting. Handle gently and cool quickly to cut post-harvest losses, which can otherwise reach 20–40%.
- 6
Sell direct for a better price
List your soybean free on GeraFarm, set your own price, and sell direct to verified buyers — keeping the margin a broker would otherwise take.
Diseases & pests to watch for
- Asian soybean rust
- Soybean cyst nematode
- Sudden death syndrome
- Phytophthora root rot
- Frogeye leaf spot
Smart-farming tips for soybean
- Rhizobium inoculant viability testing via AI sensor reduces failed N-fixation (a common 30% yield drag)
- Asian rust spore trap networks + AI alert system triggers spray 7 days before epidemic threshold
- Protein and oil content NIR analysis at harvest enables premium variety marketing
- Soybean cyst nematode soil mapping (from sample AI analysis) guides resistant variety placement
- Carbon credit calculation tools quantify sequestration benefits of no-till soybean systems
Get soybean price alerts & growing tips
Seasonal soybean price updates, planting reminders and disease alerts, plus when to sell for the best price — straight to your inbox. Free.
Growing soybean — frequently asked questions
- How much soybean can you grow per hectare?
- A well-managed soybean crop yields 1.5–4 tonnes per hectare. Actual yield depends on variety, soil fertility, irrigation, and disease pressure — Nigeria, Ghana, Uganda, Ethiopia, Ukraine are among the leading growing regions. On GeraFarm, growers selling direct typically earn 40–60% more than through traditional middlemen.
- When is the soybean growing season and how long until harvest?
- Soybean is typically planted in: May–June planting; harvest October–November (Northern hemisphere). It takes 90–140 days from planting to reach harvest. Timing your planting to local conditions is the single biggest factor in yield.
- What soil and water does soybean need?
- Soybean prefers Well-drained loam, pH 6.0–7.0; requires Bradyrhizobium inoculation for N-fixation. Water requirement: 450–700 mm; critical at flowering and pod-fill. Matching soil and irrigation to these needs is essential for a healthy soybean crop.
- What are the main diseases and pests that affect soybean?
- The most common threats to soybean are Asian soybean rust, Soybean cyst nematode, Sudden death syndrome. Crop rotation, certified seed or planting material, good spacing for airflow, and early scouting are the most reliable defences. AI disease-scan tools can flag many of these before they spread visibly.
- Is soybean farming profitable?
- Soybean sells for around $0.48 per kg at farm gate, and a hectare can yield 1.5–4 tonnes. Profitability hinges on yield, input costs, post-harvest losses, and the price you can negotiate — selling direct to buyers on GeraFarm removes the broker margin that usually takes 40–60% of the gap between farm-gate and retail price.
- Where can I sell soybean after harvest?
- You can list soybean free on GeraFarm and reach verified buyers — restaurants, wholesalers, processors and exporters — in 50+ countries. There are no listing fees, only a small commission on completed sales, and you set your own price in your local currency.