Plum farming in Kenya is and has not been widespread as other fruit farming ventures like mango or avocado farming. It has gained popularity in the last few decades with the growing interest in diverse fruit farming options, introduction of suitable varieties and better understanding of the crop’s requirements. Plum trees are deciduous, requiring a cool climate that has distinct seasons for them to thrive. They are primarily grown in Kenya’s highland regions, where the climate and soil are favourable. The main areas being Kiambu, Nyeri, Murang’a, Nakuru, Kericho and some parts of Meru County.
Plums
are stone fruits that belong to the genus Prunus, which also includes peaches,
cherries and almonds. They are known for their juicy flesh and smooth, often
colourful skin, ranging from red and purple to yellow and green. Plums are
known to be rich in vitamins A, C, and K, dietary fiber, and antioxidants,
making them popular for fresh consumption and processing into products like
jams, juices and prunes.
Popular
plum varieties grown in Kenya.
- Santa Rosa
- Satsuma
- Shiro
- Cherry plum
- Harry Pickstone
Ideal
Climate and Soil requirements for the growth of plums
Temperatures:
Plum requires temperatures between 18 and 25 degrees Celsius. They need a cool
period to encourage flowering.
Rainfall:
Plums require well distributed rainfall of about 800-1200mm per year. However,
they do not tolerate waterlogging making proper drainage essential.
Soil
type: Well-drained, loamy soils with good organic matter content are ideal. The
soil pH should be slightly acidic to neutral, between 5.5 and 6.5.
Propagation
of plums
Plums
can be propagated from seeds but for uniformity in fruit quality and early
maturity, grafting is recommended. It is advisable to get the grafted seedlings
from certified nurseries like Richfarm Kenya. You can contact Richfarm Kenya on
0724698357/0723213602/0798919007 to place your order.
Ideal spacing for plum trees
We
recommend a spacing of 5m between your plum trees and by 5m between the rows to
allow enough room for growth and ease of management.
Planting
holes size
When
preparing to plant your plum trees, dig holes measuring 60cm by 60cm by 60cm
that is 2ft by 2ft by 2ft and then mix the topsoil with compost or
well-decomposed manure before refilling the hole.
Planting
time
The
best time to plant your plums is during the onset of the rainy season, usually
in March or October. Timing this period is important to ensure sufficient water
availability and good establishment of the seedling.
Management practices in plum farming
Irrigation
Just
like other plants, plums need supplementary irrigation during the dry seasons
especially during the flowering and fruit development stages.
Pruning
Pruning
your plums is very important as it will help you get rid of the dead or
diseased branches, encourage air circulation and will also shape your plant in
a way that allows sunlight penetration. The best time to prune your plant trees
will definitely be during their dormant season, ideally June or July.
Common
plum pests and diseases
Plum
trees are susceptible to several pests and diseases, which can impact fruit
quality and yield if not properly managed. Some of the common ones are.
- Aphids-These are sap sucking insects that cause leaf curling, stunted growth, and transmit viral diseases.
- Fruit flies-The lay eggs inside the fruit, leading to maggot-infested plums.
- Plum Curculio-Plum curculio pest bores into the fruit to lay eggs causing premature fruit drop.
- Scale insects- These insects attach themselves to the plant branches and suck sap, weakening the tree and causing the branches to start drying up.
- Brown rot: This is a fungal disease that causes fruit rot, blossom blight, and cankers on branches. Its best control is pruning and removing infected parts, applying fungicides and ensuring proper air circulation around the plants.
- Black Knot- A fungal disease that causes black, swollen galls on the branches, leading to dieback.
- Bacterial spot- This disease causes small, water-soaked lesions on leaves, fruit, and twigs leading to defoliation and fruit blemishes.
Maturity
period, Harvesting and Post-harvest handling of plums
Plums
take about 3 years from planting to begin fruiting. Once the fruits are mature
and are ready for harvesting, the biggest indicator is the colour change then
softening of their skin. Plums have a delicate skin and therefore they need to
be handled carefully to avoid damaging them.
Waiting
for a fruit to reach its maturity and properly harvesting it is not enough.
Proper post-harvest handling is crucial to maintain quality for marketability.
Once you have harvested your plums, as a commercial farmer you should grade
your plums, sort them out in terms of quality and size and then store them
ready for market. If you are into value addition, process your plums in to
jams, juices, dried prunes and many other products. This will extend the shelf
life of your produce and also open up new market opportunities.
Market potential for plums
Local market
Plums among other fruits are a popular choice for fresh consumption. In Kenya we have supermarket chains, specialty stores, groceries, market stalls etc offering market for our plums.
Export market
There
is a potential for exporting our Kenyan plums to regional markets such as
Uganda, Tanzania and Rwanda and also to the European markets. However, if you
target the export markets, meeting international quality standards and
certification will be crucial.
Challenges in plum fruit farming
While
plum farming is profitable, it is not without challenges. Some of the
challenges you are likely to encounter as a farmer are,
Changing
climate_ Unexpected weather patterns can really affect flowering and fruit set.
Pest
and disease-Plums are susceptible to pests and diseases and therefore they need
to be managed properly to ensure the plants have high yields
Market
fluctuations -Sometimes the law of supply and demand may actually hit in, and
the prices may fluctuate depending on the supply and demand and this may affect
profitability.