Nursery
Site
Selection
i) The soils in
the site should well drained, preferable sandy soils, heavy clays soils should
be avoided
ii) Soils should
be deep enough not less than 1.5 m. Shallow soils with underlying hard rocks,
low areas which are subjected to water stagnant .
iii) Should be
near water source for daily watering as recommended
iv)Not have big shades. Normally coconuts require
sunshine
v)The area
should be free from soil born diseases or nutrient deficiencies
Preparation
of beds
-Clean the area
and remove all tree stumps
-Beds of 1 m in
width and about 10 m long
-Leave 60 cm
between beds
-Fence the
nursery use any available to keep destroying animals out
Sowing
-Before the nuts
are sown the front side of the nut should be slashed to allow germination
-Nuts are
planted in shallow trenches 15 cm deep.
The trench should be about 45-60 cm apart wide enough to take a coconut
and almost deep enough for the nuts to be buried.
-The nuts should
be planted horizontally in the trenches about 15 cm. without removing the husk.
-They should be only two thirds buried this allows easy inspection for early
germination. Nuts which germinate slowly
must be discarded at early stage.
- Shade is
unnecessary but watering is essential during dry periods.
-
Trenches
are normally 45 cm-60 cm apart (row spacing)
-
Seen-nuts
are placed horizontal with largest eye pointing to the uppermost.
-
Seedbeds
are sometimes mulched but should not be shaded
- Sprouting
may first appear after 3 months but mean of 4-4½ .Anything beyond 5 months
should be rejected because it will be weak.
-Seedlings are
ready for transplanting when they have three or four leaves i.e. about a year
after planting. They are simply
pulled upwards, no harm is done if some of the roots are broken unless bole rot
is prevalent, in which case root damage should be avoided. There should be a further selection at the
three leaf stage when all weak plants are pulled out. Selection should be so rigorous that no more
than 50% of the nuts originally planted .in the nursery is used for planting in
the field.
Germination
-The seed has no
dormancy but germination is slow. Germination may begin while the fruits are
still attached to the palm.
-In most tall
palm, it takes 4 months for the shoot to emerge form planted fruits
-The embryo
grows in two directions. i.e the outer end produces the shoot whilst the inner
end grows into the central cavity of the nuts to form (a spherical, spongy
body) the haustorium or coconut apple.
This has a function of making contact with the endosperm to the growing
seedling.
-The shoot
emerges through the husk, the root grow from the base of the shoot and emerge
at the bottom of the nuts at about the same time.
Selection
of seedling
Choose
seedlings which are straight, healthy seedlings, discard all seedlings which
are twins, too tall, bent, unhealthy and those seedlings which have abnormal
colour.
Nursery
management
-water
management should be observed all the days except on the rainy days.
-Weeding should
be done whenever weeds appear. Prevent
the inversion of pests and diseases, pests like termites etc.
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