The Sapota
(Chickoo)
Introduction: The
Sapota (Achras Zapota L.) is a delicious fruit introduced from tropical America and first
planted at Gholrad near Mumbai in 1898. Its cultivation has spread to Maharashtra,
Gujarat, Karnataka and Tamil Nadu. It is evergreen, tropical fruit tree, spreading habit
and lives longer upto 100 years.
Importance: The
Sapota when fully ripe is delicious and is eaten as dessert fruit. The pulp is sweet and
melting. Besides food values the Sapota fruits are also used in some auverda preparations.
Climate: The Sapota
is a tropical fruit crop and can be grown from Sea level upto 1200 m. height. It prefers a
warm and humid weather and grows in both dry and humid areas. Areas with an annual
rainfall of 125-250 cm are highly suitable. The optimum temperatures ranges between 12
deg.cent. to 36 deg.Cent.
Soil requirement:
The Sapota tree is a hardy perennial and evergreen tree and can be grown on a wide range
of soils. Drainage is most important. There should not be a hard pan in the sub-soil. Deep
and porous soils make a good growth. The Sapota can tolerate the presence of salts in the
soil or in irrigation water to some extent.
Varieties: The
important and widely adopted varieties are Kali Patli and Cricket Ball ( Calcutta Large).
The other varieties are, pili patti, Bangalore, Baramati, Dwarapudi, Chhatri, etc.
Propagation: The
Sapota can be propagated by seeds by grafting or by layering. However, commercially
followed method is softwood grafting on rayan seedlings. This method has replaced the
earlier method called as approach grafting. The Sapato when grafted on rayon has initially
slow growth but the tree lasts longer. The layered plants grow vigorously and the method
is cheaper as no root stock is required.
Planting and Season:
The planting of grafts is done from June to October, for which pits of 1x1x1 m at the
distance of 8 x 8 or 9 x 9 or 10 x 10 m are dug well before the onset of monsoon. The pits
are filled in with a well decomposed manure, 5:10:5 mixture, single super phosphate, neem
cake and a mixture of micronutrients. Hundred to 120 plants are accommodated in a hectare.
Interculturing: The
Sapota has a long pre-bearing age and a wider spacing allows enough interspace for growing
certain crops for few seasons. The short duration fruit crops like banana, papaya,
pineapple or vegetables, different types of lillies or groundnut, chilli, gram,etc. are
suitably grown for some seasons. Frequent weeding or mulching is necessary for first few
years.
Care of young
orchard: A strong windbreak should be established by planting tall and thick growing trees
on the windward or on all the sides of the orchard. Frequent removal of outgrowth on the
stock is necessary in grafting plants. Gap filling and supporting with bamboo is to be
done as early as possible. Young plants are likely to damaged due to the scorching sun,
dry and hot wind and frost. Necessary protective are adopted.
Special
horticultural practices: Training and pruning : In Sapota, a strong central stem is
necessary. The Sapota, in general, has a well balanced distribution of branches and the
crown assumes a uniform shape. There is no neccessity of pruning every year. All the
growths those appear on the rootstock below the graft joint must be removed. After ¾
years of planting, the lowermost branches upto a height of 1 m may be removed. Similarly,
overshaded and crowded branches are also removed. In Sapota, new growth and flowering
occur simultaneously and it has a mixed type of bearing habit. Flowers and fruits appear
in the leaf axils in the new growth and hence pruning of branches should not be done.
Irrigation: Though
Sapota can tolerate drought conditions to some extent, yet it responds well to irrigation.
As the tree is perennial, evergreen and almost growing cum fruiting stage every year,
irrigation whenever is necessary must be provided.
Nutrition: For
healthy growth and good quality fruits manures are fertilizers should be applied
regularly. The trees should be fertilized twice in a year during June and January. A well
grown tree should be supplied with 100 kg FYM, 10 kg Biomeal 2.5 kg, 5:10:5; 1 kg ormichem
or any other micronutrient mixture. The foliar sprays of NpK, Mg & Zn are useful to
increase the fruitset and improve the size of fruit. Nitrophoska 8:12:24:4 at the rate of
100 gm/tree has proved beneficial. Nutritional trial at Ganeshkhind, Pune it was observed
that, the use of vermicompost alone and supported with foliar sprays of biocil and biok, a
bumber harvest was achieved at 3rd year of application.
Plant Protection:
The Sapota crop is affected by insect pests and diseases and also by some disorders. The
important insect pests are as
Stem borer
Scale insects
Leaf webber
Mealy bug.
Leaf minor
Bud eating
caterpillar
Barkeating
caterpillar and
Fruit borer.
Important diseases:
Leaf spot
Sooty mould and
Flatenned branches.
The suitable control
measures are adopted. Clean and well nourished orchard is affected less. Caryaryl,
Malathion, Dimithods, Bavistin, Kuman.L,etc. should be sprayed alternatively apart from
following clean cultivation.
Harvesting and
yield: Sapota is a climacteric fruit and it improves in quality after harvesting but
immature fruits should never be harvested. A well grown and well nourished Sapota tree
yields 2500 to 3000 fruits weighing about 150 kg every year, for 50 to 60 years during its
productive age.
Post Harvest handling:
Well matured fruits ripen within 3/5 days after harvest and can be stored for 10-12 days
in 12 deg.Cent.temperature. Graded fruits are packed in boxes and then transported to
distant markets. For local markets, the fruits are washed in water and carried in baskets
or gunny bags. |
Ag.
Technologies
(Horticulture)
|