Mandarin Orange (Citrus Reticulata Blanco) Rutaceae

Coorg Orange and Kodai Orange

Sub tropical climate with an elevation of 500– 1500 m above MSL. A rainfall of about 150
cm to 250 cm is required. The winter should be mild and there should be no strong, hot winds
during summer. Deep well drained loamy soils are the best. Soil pH should be between 5.5
and 6.5.

November – December.

Seedlings and budded plants

 6x6m, pit size 75x75x75 cm. Planting during May – June and Sep – Oct.

Apply twice in a year during June and October.
For Palani Hills

For Shervaroyan hills (for trees above 6 years old):
Apply 700:375:600 g / tree NPK along with AM fungi (Glomus fasiculatus) @ 1 kg / tree.
Manures are to be applied in the basin 70 cm away from the trunk and incorporated. Apply
micronutrients as suggested for sweet orange. Apply agricultural lime or Dolomite at 4 kg /
tree during January – February once in 2 – 3 years. This should not be combined with other
chemical fertilizers.

Remove water shoots, rootstock sprouts, dead and diseased shoots.
Remove laterals of the main stem up to 45 cm from ground level. Basins should be provided for
each tree with gradient slope.

Leaf miner

 Neem seed kernel extract 5% (NSKE)
 Neem oil 3%


Aphids

 Neem oil 3%
 Fish oil rosin soap @ 25 g/l.


Fruit sucking moth

 Destroy Tinospora weed host. Bait with fermented molasses
plus malathion 50 EC @ 1 ml/l.
 Bag the fruits with degradable polythene bags (150 gauge)
punctured at the bottom.
 Apply smoke and set up light traps or food lures (pieces of
citrus fruits).


Shoot borer

 Prune the withered shoots 4 cm below the dried portions


Stem borer

 Prune the branches containing grubs.


Fruit fly

 Collect and destroy fallen fruits.
 Set up methyl eugenol trap 0.1% solution mixed with
malathion 50 EC @ 1 ml/lit between 6 a.m. and 8 a.m.
 Use degradable polythene bag (150 gauge) fish meal trap
with 5 gm of wet fish meal + 1 ml. malathion in cotton. 50
traps are required/ha, fish meal + malathion soaked cotton
are to be renewed once in 20 and 7 days respectively
 Neem oil @ 3 % as foliar spray as need based


Green scale

 Apply carbofuran 3 G 15 g/plant
 Spray quinalphos 25 EC 4.0ml/l.


Sooty mould

 Boil 1 kg maida or starch with 5 l of water, cool, dilute to 20 lit
and spray. Avoid spraying during cloudy weather.

Powdery mildew
 Apply sulphur dust @ 25 – 30 kg (350 mesh) in the early morning hours to protect new
flush or spray wettable Sulphur @ 0.3% or triademefon @ 0.1% three times at 15 days
interval.


Sooty mould
 Boil 1 kg maida or starch with 5 l of water, cool, dilute to 20 l and spray
 Avoid spraying during cloudy weather

To increase the fruit retention spray the trees at flowering and again at
marble stage with 2, 4 – D at 20 ppm or NAA 30 ppm.

 Budded plants start bearing from 3 – 5 years after planting while seedlings take 5-7
years.

15 – 20 t / ha / year.

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