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					Lanzones Production
        Technology


     Orlando C. Pascua
             RG Maghirang (ed.)
             Edited August 2006
Lanzones
• Grown in Southern Tagalog and
•Mindanao
• 10,330 ha. area planted
• Grows well in clay loam soils and in places
where the ground water is shallow.
• Thrives best in warm humid climate with an
even distribution of rainfall throughout the
year.
 Varieties:
DUKU
       • The tree is usually shorter than the
       other varieties but has a wider crown.
       • Leaves are hairless.
       • Fruits are round and are borne from 4
       to 12 fruits per raceme.
       • Pericarp is thick (up to 6 mm) with no
       latex.
       • It is sweet with a delectable flavor.
PAETE

        • Grown mostly in Luzon, Misamis
        Oriental and Camiguin Island.
        • Fruit is elongated and smallest
        among the varieties.
        • Leaves are lanceolate.
        • The tree is erect.
        • Trees are relatively susceptible to
        bark borer infestation.
LONGKONG

           • A variety introduced from
           Thailand and Indonesia.
           • The fruit is sweet and
           tasty.
           • Almost seedless.
           • The skin or peel has no
           latex.
Site Selection
• Flat to hilly within 600 m above sea level.
• The land should have a loamy or sandy soil.
• 2,500 – 3,000 mm annual rainfall
• 75-80% relative humidity
Preparation of Planting Materials

• Select only plump and well-developed seeds.
• Carefully remove the flesh adhering the seed.
• Germinate the seeds in light loamy soils or in
germination beds with sawdust.
• Germinated seedling are ready for potting in
8” x 11” x 0.003 plastic bag when the first pair
leaves have appear.
Preparation of Planting Materials

• At 12-18 months from pricking the rootstocks
are ready for asexual propagation.
• At 6-12 months after grafting, the asexually
propagated plants are ready for field planting.
• Rebagging should be done when polyethylene
bag becomes brittle
• Rear seedlings under a nursery shade allowing
full recovery of the plants prior to field planting.
Land Preparation
• Clear/underbrush the whole area.
• Plow and harrow to loosen the soil.
• Plant temporary shade (ipil-ipil, madre de
cacao or banana) before field planting.
• Stake a distance of 5 m between hills and 5
m between rows.
• Prepare holes 25 cm in diameter at a depth
of 25 cm or big enough to accommodate the
ball of soil supporting the bagged plants.
Planting

• Apply basally, 50-100 gm of complete
fertilizer (14-14-14) or ammophos (16-20-0).
• Remove the plastic bag and plant the
seedling into the prepared hole.
• Cover the hole with top soil and press
gently.
• Water immediately after planting.
Care and Management

1. Ring weeding should be done when
   necessary.
2. Shallow cultivation of the plant to a
   radius of at least 1 m should be done
   twice a year or as the need arises.
3. Mulch the tree with coconut husks or
   grasses to conserve soil moisture.
 Care and Management




Mulching in
lanzones
Care and Management
4. Pruning
  • Judicious pruning should be done during the dry
  season.
  • Cut surfaces should be applied with copper
  fungicides.
  • Start pruning when the plants is 1.5 m tall.
  • Decapitate the apical shoot to a height of 1 m to
  induce formation of secondary stems and bend the
  stems outward to promote good branching.
  • When the plants are matured, prune every after
  harvest to remove diseased and weak branches, and
  shoots which grow parallel to secondary stem.
Care and Management

        5. Flower thinning


        • Remove excess cluster of
        flowers that emerge in tertiary and
        small branches, short clusters
        (less than 3 inches) and
        overcrowded clusters to prevent
        deformities in fruits.
Care and Management
  6. Fertilization

               Fertilization Schedule
  Plant Age/Stage       Kind of Fertilizer     Rate/Plant
 a) Vegetative Stage   Ammonium Sulfate         100-200
                          (21-0-0) or          g/tree/year
                         Urea (46-0-0)
 b) Bearing Stage       Complete Fertilizer         5-8
                           (14-14-14)          kgs/tree/year
                                              (after harvest)

 • Drill or broadcast the fertilizer 1 m away
 from the base of the plant depending upon the
 topography of the land.
Pest Management
In Lanzones
Pests and Diseases



 • threat to the industry
 • retard the growth of trees
 • reduced both quality and
 quantity
 • reduce yield
INSECT PESTS OF LANZONES

       1. Bark Borer


       •   Serious pest of lanzones

       •   Bark infestation
           suppresses flower
           emergence and reduces
           yield.
        a. Proxinonena sp.

        •    Injurious among
             species
Larva
            • Feeds on bark and
            cambium layer
            • Produce a scaly
            bark
b. Cossus sp.

•   Mines under the bark by
    feeding on it and
    secretes a web that form
    a tunnel.

•   Infestation occurs at the
    crevices between
    branches.

•   Infestation in old trees
c. Gold-banded Moth

•   Larvae predominant on the
    terminal twigs.
•   Dark blister-like appearance
    indicative of its infestation.
•   It penetrates the cambium
    layer of the twigs.
•   Scraping-off of infested bark
    is harder than Proxinonena
    sp.
2. Twig Borer (Cerambycid Beetle)

                      • The larva bore
                      into the stem or
                      twig     of   the
                      lanzones    trees
                      resulting in the
                      death    of plant
                      tissue.


     Control:
     • Damage plant parts must be pruned
     and burned.
Control:

1. Mechanical Method
•      Scraping and pruning infested portions


2. Chemical Method
•      Application of insecticide after
    mechanical     operations in knocking out
    the borer.
DISEASES
1. Root Rot

  •This fungus disease attacks trees in
  areas with waterlogged condtion.

  •Infection starts at lateral roots and
  moves towards the main root up to the
  base of the trunk.

  •Externally the leaves turn yellow and
  gradually fall-off.
Control:


•Provide good drainage


•Digging and burning of dead trees


•Treat infected roots and trunk with
fungicides
  2. Scab
  •   Serious disease
      affecting the Longkong
      variety of lanzones.

  •   Exhibited by bulging of
      the bark.


Control:
• Spray Copper Hydroxide(Kocide) or
Copper Oxychloride)
HARVESTING

• Harvest the fruits 140-150 days from
flower formation to fruit ripening.
• Do the harvesting early in the morning or
late in the afternoon.
• Harvest the fruits by climbing the tree and
cut the ripe bunches with sharp cutters or
pruning shears.
Post Harvest Handling

         • sort, clean, air dry and grade the
         harvested fruits.
         • pack the fruits in cartons or
         crates with liners or cushion to
         reduce damage during handling.
         • store the fruits in cold storage
         at 10 o C with relative humidity of
               o

         85-90 % to extend the shelf-life of
         the harvested fruits.

				
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