Hello Sir
Pomegranate grows well under semi-arid conditions and can be grown upto an altitude of 500 m. above m.s.l.. It thrives well under hot, dry summer and cold winter provided irrigation facilities are available. The tree requires hot and dry climate during fruit development and ripening. Pomegranate tree is deciduous in areas of low winter temperature and an evergreen or partially deciduous in tropical and sub-tropical conditions. It can tolerate frost to a considerable extent in dormant stage, but is injured at temperature below - 110 C.
Important pomegranate varieties cultivated in India are Alandi or Vadki, Dholka, Kandhari, Kabul, Muskati Red, Paper Shelled, Spanish Ruby, Ganesh (GB I), G 137, P 23, P 26, Mridula, Aarakta, Jyoti, Ruby, IIHR Selection, Yercaud 1 and Co 1.
A spacing of 5-6 m. in northern India and also in the plains of Deccan plateau is usually followed. High density planting with a spacing gives 2-2.5 times more yield than that obtained when the normal planting distance of 5 X 5 m. is adopted. Farmers have adopted a spacing of 2.5 X 4.5 m. Closer spacing increases disease and pest incidence.
Square system of planting is mostly adopted. Planting distance is decided on the basis of soil type and climate. A spacing of 4-5 m. on marginal and very light soils is recommended.
Pits of 60 X 60 X 60 cm. size are dug (at a spacing of 5 cm. in square system) about a month prior to planting and kept open under the sun for a fortnight. About 50 g. of 5% BHC or carbaryl dust is dusted on the bottom and sides of the pits as a pre-caution against termites. The pits are filled with top soil mixed with 20 kg. farmyard manure and 1 kg. super phosphate. After filling the pit, watering is done to allow soil to settle down. Cuttings/air layers are then planted and staked. Irrigation is provided immediately after planting.
The recommended fertilizer dose is 600-700 g. N, 200-250 g. P2O5 and 200-250 g. K2O /tree/year. Application of 10 kg. farmyard manure and 75 g. ammonium sulphate to 5 year old tree annually is adequate , whereas application of 50 kg. farmyard manure and 3.5 kg. oil cake or 1 kg. sulphate of ammonia prior to flowering is ideal for healthy growth and fruiting. The time of application is December/January for ambe bahar, May/June for Mrig bahar and October/November for hasthe bahar.
Plants are trained on a single stem or in multi-stem system.
Pruning is not much required except for removal of ground suckers , water shoots, cross branches , dead and diseased twigs and also to give shape to the tree. A little thinning and pruning of old spurs is done to encourage growth of new ones.
Fruit cracking is a serious disorder. This physiological disorder observed in young fruits is due to boron deficiency and that in fully grown fruits is mainly due to moisture imbalances. Tolerant varieties viz. Bedana Bose and Khog may be cultivated and in other cases spraying with calcium hydroxide soon after fruit set has been found to be beneficial.
Pomegranate being a non-climacteric fruit should be picked when fully ripe. Pomegranate plants take 4-5 years to come into bearing. Harvesting of immature or over mature fruits affects the quality of the fruits. The fruits become ready for picking 120-130 days after fruit set. The calyx at the distal end of the fruit gets closed on maturity. At maturity, the fruits turn yellowish-red and get suppressed on sides.
Fruits are graded on the basis of their weight, size and colour. The various grades are super, king, queen and prince-sized. Besides that, pomegranates are also graded into two grades- 12A and 12 B. Fruits of 12-A grade are generally preferred in southern and northern region.
Major sources are:
Indian Institute of Horticultural Research, Hessarghatta, Bangalore-560089, Karnataka.
Directorate of Horticulture, Shivajinagar, Pune, Maharashtra-560003.
Directorate of Horticulture, Lalbagh, Bangalore, Karnataka.
Progressive growers of Maharashtra.