🌸 Custard Apple - Soil,

This lesson compiles the core production technology concepts in a structured, exam-focused format while preserving the original subject content.

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NUTRIENT AND WATER MANAGEMENT, SPECIAL CULTURAL

OPERATIONS, PHYSIOLOGICAL DISORDERS, PESTS AND DISEASES,

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MANAGEMENT PRACTICES

Custard apple ( Annona squamosa ) can be called as a delicacy of dry region due to its

very sweet delicate flesh. It is a deciduous or semideciduous tall woody shrub of anout 5-6

meters height having irregularly spreading branches. The fruits are rich in carbohydrate mainly

in the from of sugar (23.5%), protein (1.6%), calcium (17mg/100g), phosphorus (47mg/100g)

and iron (1.5mg/100g). The custard apple of India the sitaphal or sugar apple of sweet sop has

many relatives.

1. Bulock’s heart (or) Bull’s heart (or) Ramphal: (Annona reticulata) Fruits are larger in

size, heart shaped, smooth and less seeded but pulp is inferior in quality.

2. Sour sop: (A. muricata). The fruits have many soft spines. Fruits are highly acidic.

3. Cherimoyer (or) Cherimola (or) Cherimoya (or) Lakshman phal: (A. cherimola).

Fruits are most the delicious, slightly adicdic, sweet with buttery consistency of pulp

and low seed content.

4. Atemoya: A. atemoya (A. squamosa x A. cherimola). It is a F1 hybrid with a better

quality of A. cherimola and adaptability to high temperature as that of A. squamosa.

Besides used as a dessert fruit, custard aple can be used in ice cream and in preparation of

jam, jelly etc. Tropical America is considered to be the native home of all home of all

Annonaceous fruits.

The probable origin of A. squamosa is West Indies and South America, while A.

cherimola originated in mountains of Ecuador and Peru.

Climatic and soil requirements:

A warm climate (not very hot) with high humidity and milld winter will be the ideal

climatic condition for the best growth and yield of most of the Annona sp. Except A.

cherimola. Though they can tolerate extremes of temperature (beoow freezing and upto

40 [o] C), suchextermes won’t be ideal for production of flowers and fruits. They can be grown

from sea level up to 1000 meteres. Where the summer temperature is very high (more than

40 [o] C) and humidity is low there willl be no fruitest though the flowering is profuse. An

annual rainfall of 500-750 mm is adequate ofr growth and fruiting. Cherimoyer (A.

cherimola) requires a lower temperature and a subtropical mild climate and it is difficult to

be cultivated at very high temperature. Atemoyas (the hybrids between custard apple and

cherimoyar) have the superior tastes of cherimoyer can tolerate fai8rly higher temperature

just like A squamonsa. Ramphal (A. reticulate) does not tolerate severe summer when

compared to sitaphal.

Annonas can be grown in varied soil right from heavy claly upto sandy one. They can

also be grown on rocky, marginal and even waste lands. However for best yield, a well

drained fertile soil with neutral pH will be ideal. The plants are shallow rooted anod hence a

deep soil is not necessary. They can be grown on slightly alkaline soil and with irrigation

water having slight higher pH and salinity.

CULTIVARS:

Balanagar:

It is a cultivar of A. squamosa. The fruits are greenish yellow in colour. Each fruit

weight 130-140g. TSS is 20.7 [o] brix.

Red sitaphal:

It probably originated as chance seedling. Fruits of this cultivar through belong to A.

squamosa are pinkish dark with erythrite red pulp. Average fruit weight is 150-160g with

22.3 [o] bix TSS.

Mammoth:

It is a cultivar of A. squamosa . The weight of the fruit is about 125g, TSS is 20 [o] brix.

African Pride:

It is a cultivar of A atemoya (Cherimoya x sugar apple). It is a popular variety grown is

subtropical region of Australia.

Pink Mannoth:

It is another popular cultivar of atemoya. The pulp is similar to cherimoyer, being juicy

with an excellent acidic flavour.

Arka Sahan:

It is an interspecific hycrid developed at IIHR, Bangalore. Fruits are big (210g) skin is

light green in colour with waxy bloom, moderately thick with large flat eyes. Fruits have

improved shelf life viz., take 7 days to ripe, 4 days more than ‘Mammoth’. The creamy white

flesh in juicy with mild pleasant aroma and tender with sparse seeds (9/100g of fruit weight).

The fruit of this variety is also characterized by large segments or flakes and many of which are

seedless. Flesh is very sweet (30 [o] brix) compared to 24 [o] brix in Mammoth. Average yield is 12

tonnes/ha.

APK (Ca)-1:

It is a clonal selection from a high yielding type in State Horticultural Farm, Courtallam

of Tirunelveli District of Tamilnadu developed at Regional Research Station, Aruppukkottai. It

is a high yielder in rainfed vertisol (Black soil) 14.90 kg/tree, 30.7% more than Balanagar. Each

fruit weighs 207g. Average number of fruits would be 72/tree. TSS 24.5 [o] Brix, acidity 0.2%.

Adapted to semiarid plains.

Propagation and planting :

Annona is propagated commonly by seeds. Fresh seeds germinate in 20-30 days. Seed

propagation results in variability in plant vigour, prolonged juvenility and inferior fruit quality.

Vegetative propagation by budding or inarching on owoon seedlings and A. reticulata ensures

genetic uniformity. Budding is usually done in early spring or in the autumn. Inarching should

be carried out in early spring using one-year old mature scion and more than one-year old root

stock.

A spacing of 5Mx5M is recommended for annonas. At planting, 50g. phophobacterium +150g of

Vesicular Arbuscular Mycorrhiza are inoculated on the roots and the plants are planted in the pits

filled with 10kf of FYM and top soil. This helps in rapid growth of roots and better

establishment of plants, especially in dry regions.

Since Annonas are mostly cultivated on poor soils, manuring is necessary for production

of good crops. Application of 10 kg Farmyard manure, 250g N, 125g P2 O5 and 250g K2 O is

recommended per tree. The fertilizers hould be applied at the commencement of rainy season.

Black polythene mulch is most effective in reducing the irrigation requirement in anola cv. N.A

7 (60.86%) with an annual water requirement of 777.6 litres per tree.

Intercultivation:

Intercrops like groundnut, minor millelts, crowpea and linseed can be grown in the initial

years of planting.

The problem of poor fruit set in custard apple can be overcome to a large extent by

application of GA at a concentration of 50ppm. Dipping of freshly opened flowers in GA

ensures better fruit-set, better fruit retention, increased fruit size and weight with less seed. The

crop can be sprayed with NAA 20 ppm four times at weekly interval during flowering (March –

April) to encourage fruitset. Irrigatin and mulching during summer season also helps to prevent

fruit drop.

Plant protection:

Pests:

Mealy bugs: ( Ferrisia virgata, Maconellicoccus hirstus)

These cause blemishes on fruits and the pest can be controlled by spraying 0.05 per cent

dichlorvos. Refer : previoue sections for newer insecticides.

DISEASES:

Leaf spot:

Affected leaves drop down prematurely. This canbe controlled by fortnightly sprays of

0.05% carabendazim commencing from the appearance of the disease symptom.

Anthracnose: ( Glomerella cingulata)

Infection begins at blossom-end of the fruit and later spreads on entire fruit surface,

affected fruits shrivel and they may cling to the tree or fall down.

Management:

Spray Indofil M.45 (0.02%) at 15 days interval.

Harvest and storage:

The fruts are to be harvested at correct stage of maturity. Light green fruit colour,

yellowish white colour between the carpels and initiation of cracking of the skin between the

carpels may be taken as maturity indices. The fruits are hand picked. The peak harvest period is

October – November. A sugar apple tree usually produces 80-100 fruits per tree after 4 to 5

years.

The custard apples ripen with in a few days after harvest. The mature fruits can be stored

at 15 [o] to 20 [o] C with RH of 85-90% and low oxygen and ethylene but with 10% CO2. Under such

storage conditions, the fruts can be kept intact for 12-18 days.

Additives like Saccharified starch (1:1), high voltage treatment and packing under

nitrogen gas cover, sugar (1:2) were quite effective in extending the storage of pulp at 4 [o] C (45

days) and –18 [o] C (90 days) temperature.

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Summary Cheat Sheet

Topic	Key exam points
Climate	Warm and mildly humid climate suits most Annona spp.; very high summer heat reduces fruit set.
Rainfall	About 500-750 mm is generally adequate for growth and fruiting.
Soil	Adaptable from clay to sandy and marginal soils; good drainage and near-neutral pH are preferred.
Notable cultivars	Balanagar, red sitaphal types, Mammoth, African Pride, Arka Sahan, APK (Ca)-1.
Fruit set improvement	GA and NAA sprays plus irrigation/mulching during critical phases improve retention.

References

2 sources • [1] [2]

[1]

ICAR production technology references for custard apple

Official

[2]

NHB crop profile: custard apple

Official