Green gram farming in Kenya—locally known as Ndengu farming—is rapidly gaining popularity among both smallholder and commercial farmers. The crop’s short maturity period, drought tolerance, and strong market demand make it a reliable choice for income generation and food security.

Beyond its economic benefits, green gram is also valued for its high protein content and its ability to improve soil fertility through nitrogen fixation, making it an ideal crop for sustainable farming systems.

This guide highlights the best practices for achieving profitable, sustainable, and high-yielding green gram production in Kenya.

1. Crop Selection and Planning

Start with selecting certified seeds suitable for your Agro-climatic zone and market requirements.

Popular Green Gram Varieties in Kenya:

• N26 – Early maturing (60–70 days), drought-tolerant
• Karembo – High yielding, suitable for arid and semi-arid areas
• Biashara – Preferred for its uniform maturity and market appeal

Planting Seasons:

• Rain-fed farming: At the onset of rains—March (long rains) or October (short rains)
• Irrigated farming: Can be done year-round where water is available

Plan your production based on input availability, labour, rainfall forecast, and market access.

2. Soil and Climate Requirements

Green grams thrive in semi-arid and warm regions with moderate rainfall.

Ideal Conditions:

• Soil type: Well-drained sandy loam or loam soils
• Soil pH: 6.0–7.5 (slightly acidic to neutral)
• Temperature: 20°C–35°C
• Rainfall: 300–600 mm per season

Avoid planting in waterlogged or clay soils to prevent root rot.

3. Land Preparation and Planting Techniques

Land Preparation:

• Clear weeds and residues from the previous crop
• Plough and harrow to a fine tilth to allow good seed-soil contact

Planting:

• Spacing: 45 cm between rows and 15 cm between plants
• Seed rate: 8–10 kg per acre
• Depth: Sow seeds 2.5–5 cm deep

Apply organic manure or DAP at planting to enhance root development.

4. Crop Management (Irrigation, Fertilization, Weeding)

Irrigation:

• Green grams are drought-tolerant but benefit from light irrigation during flowering and pod filling for better yields.

Fertilization:

• Green grams require minimal fertilization.
• Use phosphorus-based fertilizers (DAP) at planting
• Avoid excessive nitrogen as it promotes vegetative growth over pods

Weeding:

• Weed during the first 3–5 weeks after planting
• Avoid deep hoeing to protect shallow roots
• Mulching can help retain moisture and suppress weeds

In order to ensure that your green gram are not competing with the weeds for nutrients, food and overall growth and performance, it is important to control weeds. It is important to contain the weeds earlier on, before they are bigger and more difficult to kill. It is recommended to control at the stage of three leaves and below, and before your beans begin to flower, in order to preserve your crop. Some of the best active ingredients for containing weeds in green grams include Clomazone, that is Systemic, and works by being absorbed by roots and shoots and moved upward. There is also Quizalofop-p-ethyl, Systemic; absorbed through the foliage and translocated via the phloem and xylem to concentrate in the meristematic growing points of grass weeds. Fomesafen, which acts primarily on contact.

WEED MANAGEMENT

5. Pest and Disease Control

Common Pests:

• Aphids
• Pod borers
• Thrips
• Whiteflies

PEST MANAGEMENT

1. Aphids, Whiteflies – Use Acetak 200SL at the rate of 10ml/20L of water.

2. Thrips, Pod Borers – Use Aragon 220ZC that is a systemic insecticides, at the rate of 10ml/20L of water.

Common Green Gram Pests and Chemical Control

Common Diseases

• Powdery mildew
• Cercospora leaf spot
• Root rot

DISEASE MANAGEMENT

1. Bacterial Blight– A copper based fungicide is the best to control this disease. Use I-Perion 50WP at the rate of 50g/20L of water.

2. Rust– Use Orizole 250EC at the rate of 15ml/20L of water.

3. Powdery Mildew – Use Orizole 250EC at the rate of 15ml/20L of Water.

4. Damping Off – To prevent this, it is important to treat your seeds before planting. Use Imidaflo 520FS to treat your seeds pre-planting.

Common Green Gram Diseases and Chemical Control

Control Measures:

• Use resistant seed varieties
• Practice crop rotation with cereals like maize
• Use biopesticides or approved insecticides at flowering

Maintain good field hygiene and plant spacing

NUTRITION

After ensuring that there are no weeds on your green grams farm, and the disease and pests are at bay, there is one more important step to ensuring optimum yields, with quality, quantity produce.

At Kenagro, we have just the right regimen for ensuring that your crops are growing well, producing the best grains, and good enough for local markets and beyond.

PROPER GREEN GRAMS NUTRITION

6. Harvesting and Post-Harvest Handling

Green grams mature in 60–80 days depending on variety and climate.

Harvesting Guidelines:

• Harvest when 80% of pods are mature and turn black or brown
• Uproot or cut plants and dry under shade for 5–7 days
• Thresh and winnow to remove chaff

Storage:

• Dry grains to 10–12% moisture before storage
• Store in aerated, dry, pest-free conditions using gunny bags or hermetic bags

7. Marketing and Value Addition

Demand for green grams in Kenya and export markets (especially to India, Pakistan, and the Middle East) is strong.

Marketing Tips:

• Sell through local markets, brokers, or farmer cooperatives
• Target peak demand seasons (before school terms or religious holidays)
• Explore export channels and contract farming with aggregators

Value Addition Options:

• Packaged green grams for supermarkets
• Roasted green gram snacks

Sprouted green grams for health-conscious consumers

8. Farm Business and Record Keeping

Smart Agribusiness Tips:

• Maintain records of seed rates, fertilizers, labour, and yields
• Monitor input costs and profits per acre
• Access loans, grants, and agricultural insurance
• Leverage mobile apps for market prices, weather alerts, and extension support

Unlocking the Potential of Green Gram Farming in Kenya

Green gram farming in Kenya is a sustainable, low-cost, and profitable venture that fits well in crop rotation programs and drought-prone regions. With early maturity, minimal input requirements, and broad market access, green grams offer farmers a dependable income stream.

By adopting the right varieties, planting practices, pest management, and marketing strategies, farmers can significantly increase yields and profitability in Ndengu farming.

Kenagro

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