The Profitable Macadamia Nut Farming in Kenya

Macadamia farming has become a prominent agricultural venture in Kenya, offering farmers a lucrative opportunity due to increasing global demand. Kenya currently ranks third in global macadamia production, commanding 13% of the global market, behind Australia and South Africa. In 2022, Kenya’s total macadamia output was 70,000 metric tons, with projections suggesting it will exceed 100,000 metric tons by 2025. Kenyan macadamia is also recognized for its superior quality, ranking second globally after Australia, further enhancing its market appeal and competitiveness.

Professional Macadamia Farming in Kenya: Full Guide

Macadamia Market Outlook

The macadamia nut market has experienced steady growth, driven by the increasing awareness of health benefits associated with nuts. In recent years, Kenya has emerged as one of the leading producers of macadamia nuts in Africa, exporting primarily to markets in the USA, Europe, and Asia. The price for farm gate nuts ranges between KES 80 and KES 200 per kilogram, depending on the quality and market demand. This fluctuating price indicates a robust market potential, encouraging more farmers to invest in macadamia production and hence it being a very profitable agribusiness to invest in.

Macadamia Nut


Macadamia Varieties

There are several improved varieties of macadamia trees suitable for cultivation in Kenya, with the most popular being the ‘Kona,’ ‘A4,’ and ‘A16’ varieties. These varieties are favored for their high yield potential and adaptability to local climatic conditions. Improved varieties can produce an average yield of 70 to 80 kilograms of nuts per tree, significantly enhancing the profitability of macadamia farming.

Grafted Macadamia Seedlings for Sale in Kenya

Where to Grow Macadamia

Macadamia nuts are mainly grown in the central part of Kenya such as Muranga, Kiambu, Kirinyaga, Embu and Meru. These are the places that the tree was first introduced when it came into Kenya. With time, the tree has spread to other areas of the country such as Bungoma, Kakamega, Kitale, Machakos and Taita Taveta.

Macadamia trees, especially the Muranga 20 variety, are highly adaptive to different climatic conditions. As such, they can be grown in most parts of the country. However, the cooler and rainy areas seem to be more favorable. The key ingredient in successful macadamia farming in the lower parts of Kenya is irrigation. The trees will need a significant amount of water especially when they are young in order to grow well.

Macadamia Farming Field in Kenya


Macadamia Farming Practices

To achieve the best results in macadamia farming, farmers should adopt the following best practices:

1. Spacing

Proper spacing is crucial for maximizing tree growth and nut production. A spacing of 8m x 8m is recommended to ensure adequate sunlight penetration and air circulation. With this spacing an acre accommodates about 70 trees. However, due to the fast maturing nature of grafted Muranga 20 seedlings, some farmers plant them with a spacing of 4m by 4 m, getting about 260 trees in an acre.

These farmers enjoy four times the yield compared to those who start off with the recommended 8m by 8m spacing, for about 10 years.

2. Soil

Macadamia are tropical trees hence do well in areas where they get full sunlight but sheltered from wind for healthy fruit production. The soil required should be deep and well drained, acidic to slightly acidic with a Ph level of 5-6.5. Rainfall should be between 800-1200mm per year. The ideal range of temperature is between 16-250C. Conducting soil tests can help determine nutrient requirements, enabling farmers to make necessary amendments.

Why Farmers Make More Money With the New Muranga 20 MacadamiaVariety

3. Pests and Diseases

I. PESTS

a. Termites

Termites are commonly found on the stems of young trees especially during the dry months. Special attention is given to eliminate the queen ants and a drench of RANGER can be applied inside the basin of young trees.

b. Stink bug

Macadamia farmers are losing almost half of their projected production due to damages by the stink bug if left unchecked early enough. The southern green stink bug, Nezara viridula, is the dominant species found in the nut trees. It has piercing sucking mouthparts consisting of a long beak like structure called rostrum. Its life cycle is 65- 70 days and the females can lay up to 260 eggs which are deposited on the underside of the leaves,

Stink bugs prefer feeding on mature nuts with green husks. Damage caused by stink bug is usually observed after harvesting and processing is being done. The stink bug places its stylet like mouthparts on the nut husk and secretes saliva containing digestive enzymes to soften the husk allowing it to insert it in to the husk and kernel leaving a discolored pit on the kernel surface and also leading to immature drops. Molds and fungi can enter the nut through the infected kernel leading to more loss and undesired quality from harvested nuts.

c. Macadamia nut borer

The larvae of the cryptophlebia ombrodelta are the most destructive stage. The eggs are laid on the surface of the green husk. After hatching, the larvae burrow into the husk while the shell is still soft where they tunnel through and feed on the kernel. The damage usually leaves hallow dimple like marks on the shell, which may cause molds to enter through the holes further reducing the quality. Infestation caused premature nut drop reducing production. 

d. Mealy bugs

Mealy bugs congregate on the nut stalk where they excrete honeydew while feeding then sooty mould grows on this secretion reducing the photosynthetic surface area on leaves, eventually the leaves turn yellow and wilt. The female mealy bug is oval shaped and lays up to 600 eggs that look like cotton balls. In addition, adult mealy bugs are covered with a white or gray mealy wax over their bodies and like to hide in shaded areas like crevices of stems or under leaves making it almost impossible for insecticides to penetrate hence more difficult to control.

e. Scale Infestation

The white scale (pseudaulacaspis brimblecombei) and latania scale (heniberlesia lataniae) are the two common types. They form small white to greyish raised spots on the nuts build-up of the pest can affect leaves and branches. Scales are up to 2mm across.

f. Thrips

Thrips damage results in a brown or bronze coloration since they feed on the outer husk. Yields and quality are rarely affected. Adult thrips are small bodied 1.5mm long insects. High infestation may affect the leaves and flowers.

g. Caterpillars

The moths lay eggs on the flower panicle. The larvae feed on the florets for about three weeks before pupating. An infestation during flowering stage can lead to reduced production if not earlier detected and controlled.

Grafted Macadamia Seedlings at our Farm


II. Diseases

a. Husk spot disease

This is caused by the fungus pseudocercospora macadamiae. The symptoms include pale yellow flecks on the husks which expand to become darker yellow to dark brown circular spots. This condition is favored by moist conditions. The spots produce grey velvety fungal spores. Infected nuts drop up to six weeks prematurely.

b. Root rot

Root rot is caused by the fungus phtophthora cinnamomi and occurs in moist, poorly drained areas. The fungal disease results in sudden deaths of plants.

c. Macadamia Canker

This is a serious infection that affects the stem, leaves, fruits, branches, twigs, barks and any part of the tree causing wilt and deaths of the plants.  It is management by ensuring proper hygiene is maintained while handling affected plants to stop spread.

d. Premature nut drop

This is usually caused by natural thinning, fruit spotting bug damage, nut borer damage, husk spot disease, heat stress, and storm damage or tree decline. This is mostly identified by large numbers of green nuts drop. Natural nut drop occurs 3-8 weeks and 10-30 weeks after flowering. Fallen green nuts are monitored and sectioned to identify the cause.

Management

Integrated management of pests and diseases and ensure proper crop nutrition and irrigation. Regular monitoring and the use of organic pesticides including natural predators can minimize damage.

4. Branching

Pruning young trees encourages a strong branching structure, which enhances nut production as the trees mature. When the trees grow very big forming canopies that prevent proper orchard aeration, the farmer should thin off the trees by removing the weak, diseased or unproductive ones.

5. Harvesting

Proper harvesting techniques are essential to avoid damaging the nuts. Nuts are harvested when the skin begins to crack.  The husk of unripe macadamia is white and usually changes to chocolate brown when ripe. The nuts are very easy to harvest as mostly drop off the trees when they are mature. It should be clear underneath the trees to facilitate easier collection of all the nuts.

Muranga 20 Variety Harvest


Maturity of Macadamia Tree

Grafted macadamia trees start fruiting after 2 years and reach an economic production in the third year. At this time, a tree would give you 20 to 30 kilos of nuts per harvest. The production increases steadily over time and by the 7th year, each tree should give an average of 100 kilos per harvest. 

Buy grafted macadamia seedlings from Richfarm Kenya.

Challenges Faced in Macadamia Farming in Kenya

Despite the promising opportunities, macadamia farmers face several challenges:

  • Climate Change: Fluctuating weather patterns and drought can adversely affect yields and nut quality.
  • Pest and Disease Pressure: Increased incidences of pests and diseases can lead to significant losses if not managed effectively.
  • Market: The price of macadamia nuts can be unpredictable, affecting farmers’ profit margins.
  • Limited Access to Quality Seedlings: Many farmers struggle to obtain high-quality seedlings, which can impact their initial yields.

Macadamia farming is rather a secure form of investment: it will need your attention less often than most other crops and is definitely a life-long income generator. We have helped a good number of people establish their macadamia farms and you can also reach us on 0724698357/ 0723213602 to have yours started.

Opportunities in the Macadamia Value Chain in Kenya

The growing macadamia sector presents various opportunities for farmers and entrepreneurs, including:

  • Value Addition: Farmers can explore value-added products such as macadamia oil, flour, and snacks, which can significantly increase profitability.
  • Export Opportunities: With the global demand for macadamia nuts on the rise, farmers can tap into international markets.
  • Training and Support: Various organizations and government initiatives offer training and support to farmers, enhancing their skills and productivity.
  • Sustainable Practices: Adopting sustainable farming practices can improve soil health, increase yields, and attract environmentally conscious consumers.

Macadamia Nuts Farming in Kenya: How to Make it a Highly Profitable Business

  • Cost per seedling- ksh. 300 Muranga 20 variety.
  • Seedlings per acre – varies depending with the variety planted.
  • Spacing- 8m by 8m
  • Fruit price- Ksh. 80-200 farm gate depending on quality and market demand.
  • Yield- 70-80kgs nuts per tree on improved varieties
  • Common pests- Mealy bugs, termites, stink bug, caterpillar, thrips, scales, macadamia nut borer
  • Common diseases- Root rot, macadamia canker, husk spot
  •  Lifespan- deciduous

Frequently Asked Questions

  • Is there a market for macadamia nuts?
  • How profitable is macadamia?
  • How much is a kilo of macadamia nuts?
  • How profitable is macadamia farming in Kenya?
  • How long does macadamia take to mature?

 


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