How Many Bags of Green Grams Per Acre in Kenya 2025 | Ndengu Yield Calculator
In Kenya, you can harvest 4-14 bags of green grams (ndengu) per acre (90kg bags) depending on region and farming practices. Eastern Kenya (Kitui, Machakos, Makueni) averages 6-10 bags/acre, while the Coast region achieves 8-12 bags/acre under good conditions. Green grams are highly drought-tolerant and command premium prices - currently KES 12,000 per 90kg bag (KES 135/kg), making them one of Kenya's most profitable crops with potential revenue of KES 72,000-144,000 per acre.
Green Grams Yields by Region (90kg bags/acre)
| Region | Counties | Yield Range | Average | Revenue/Acre |
|---|---|---|---|---|
| Eastern Kenya | Kitui, Machakos, Makueni | 5-12 bags | 8 bags | KES 96,000 |
| Coast Region | Kilifi, Kwale, Tana River | 6-14 bags | 10 bags | KES 120,000 |
| Western Kenya | - | 4-10 bags | 7 bags | KES 84,000 |
| Arid/Semi-Arid | Garissa, Isiolo, Marsabit | 3-8 bags | 5 bags | KES 60,000 |
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Complete Guide to Green Grams Farming in Kenya
Green grams (locally known as ndengu or mung beans) are one of Kenya's most profitable legume crops, particularly suited to the semi-arid regions of Eastern Kenya. The crop thrives in areas receiving 300-600mm of rainfall, making it ideal for climate-resilient agriculture. Kenya is a major exporter of green grams, primarily to India and other Asian markets where demand remains consistently high.
The economics of green grams are compelling: with yields of 6-10 bags per acre and prices of KES 12,000 per 90kg bag, farmers can earn KES 72,000-120,000 per acre. Input costs are minimal since the crop fixes its own nitrogen and requires only phosphorus fertilizer. This results in profit margins of 60-80%, among the highest for any Kenyan crop.
Green Grams Varieties for Kenya
N26 (Improved)
- Yield potential: 8-12 bags/acre
- Maturity: 60-70 days
- Grain size: Large, uniform (export quality)
- Best for: High-potential areas, export market
KS20
- Yield potential: 6-10 bags/acre
- Maturity: 65-75 days
- Grain size: Medium
- Best for: Drought-prone areas, reliable performer
Case Study: Green Grams Farmer in Kitui
5-Acre Green Grams Farm, Kitui County (2024 Short Rains)
Production:
- • Variety: N26
- • Yield achieved: 9 bags/acre
- • Total production: 45 bags (90kg)
- • Sold at KES 13,000/bag (off-season)
Financial Summary:
- • Revenue: KES 585,000
- • Total costs: KES 85,000
- • Net profit: KES 500,000
- • Profit per acre: KES 100,000
Frequently Asked Questions
How many bags of green grams per acre in Kenya?
Kenya's green grams yields range from 4-14 bags (90kg) per acre. Eastern Kenya averages 6-10 bags, Coast region 8-12 bags with irrigation. Commercial farmers with improved varieties achieve 10-14 bags/acre.
How much do green grams cost in Kenya?
Green grams sell for KES 10,000-15,000 per 90kg bag (KES 110-165/kg) depending on season. Prices peak in February-May (off-season) and drop during harvest (November-January). Export-quality green grams command premium prices.
Is green grams farming profitable?
Yes, green grams are highly profitable with 60-80% profit margins. At 8 bags/acre and KES 12,000/bag, revenue is KES 96,000/acre. With costs of only KES 15,000-25,000/acre, profit is KES 70,000-80,000/acre. This makes green grams among Kenya's most profitable crops.
When is the best time to plant green grams?
Plant green grams during short rains (October-November) for main season harvest. In bimodal rainfall areas, also plant March-April. The crop matures in 60-90 days, allowing quick turnover and potential for two crops per year.
Do green grams need fertilizer?
Green grams need minimal fertilizer since they fix their own nitrogen. Apply only 25-50kg DAP (phosphorus) per acre at planting. Avoid nitrogen fertilizers as they promote vegetative growth at the expense of grain yield.
Start Growing Green Grams
Green grams offer an excellent opportunity for Kenyan farmers, especially in semi-arid areas where other crops struggle. The combination of drought tolerance, low input requirements, high prices, and strong export demand makes ndengu one of the smartest crop choices for climate-resilient agriculture.
Use our calculator to estimate your potential yields and profits. Start with improved varieties (N26, KS20), plant at the right time, and store properly to sell during peak prices. With proper management, green grams can transform smallholder incomes in Eastern Kenya and beyond.