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Ahar-bahar (bahar treatment) crop cycling in pomegranate

Bahar treatment, also called ahar-bahar, is a crop-regulation technique in which pomegranate growers force the tree into rest for a defined period and then trigger a synchronised flowering flush so that the orchard fruits in a single market window. The technique is the foundation of commercial pomegranate cultivation in India and is described in detail by ICAR-NRC Pomegranate, Solapur.

Principle

Pomegranate is capable of three natural flowering flushes - ambebahar (spring), mrigbahar (June-July, after the monsoon onset) and hastabahar (August-September). Concurrent cropping spreads the harvest, reduces fruit quality and complicates pest management. By selecting one bahar and suppressing the others through stress-then-release management, growers concentrate yield, schedule harvest into a premium market window and limit pest and disease pressure.

Implementation

A typical mrigbahar cycle:

  1. Rest period (around 2-3 months): irrigation is withheld in April-May; trees defoliate.
  2. Pruning: light to moderate pruning removes weak shoots and shapes the canopy.
  3. Defoliant spray: where partial leaf retention persists, a defoliant such as ethrel (1000-2000 ppm) with 0.5% diammonium phosphate is applied.
  4. Flush irrigation: full irrigation resumes; trees flush and flower within a few weeks.
  5. Fruit development: harvest follows in approximately six months.

Ahar-bahar timing is matched to market conditions; in Anantapur, for instance, growers commonly time a September-October treatment to harvest in March-April, ahead of the mango season.

Adoption context

Bahar treatment is standard practice on commercial Bhagwa (Pomegranate Bhagwa) orchards across Maharashtra, Karnataka, Gujarat, Telangana and Andhra Pradesh. It is layered with integrated management of bacterial blight (Pomegranate Anthracnose Bacterial Blight) and root-knot nematode (Nematode Pomegranate) and is increasingly combined with overhead shade-cloth for sunburn protection (Pomegranate Shade Net Canopy).

Limitations

Withholding water stresses trees and can aggravate nematode and Fusarium wilt complexes; high-temperature flushes can also push flowering into a vegetative response if heat coincides with budbreak. Bahar treatment therefore requires careful timing and is calibrated to soil type, age of plants and local climate.

See also: Pomegranate Bhagwa, Pomegranate Anthracnose Bacterial Blight, Nematode Pomegranate, Pomegranate Shade Net Canopy.

References

  1. Bahar Treatment in Pomegranate. Krishi Jagran.
  2. NRC-Pomegranate Solapur. ICAR-IIHR participating institute page.