Bahar Treatment in Pomegranate: Timing and Method

Pomegranate is unique among fruit crops in India because it can flower and fruit throughout the year. While this sounds like an advantage, continuous irregular flowering actually produces light, poor-quality crops that are difficult to manage and market. Bahar treatment is the practice of deliberately stressing the tree to stop random flowering and force a heavy uniform flush of flowers at one specific time. According to research, bahar treatment can increase pomegranate yield by 20 to 30 percent with significantly improved fruit quality.

What is Bahar Treatment

The word bahar means flowering season in Urdu. Bahar treatment is a combination of withholding irrigation, light pruning, defoliation, and fertiliser application done in a specific sequence to force the tree into rest and then trigger a strong uniform burst of flowering at a time you choose. The main goal is to get all the flowers on your farm to open at the same time so that all fruit develops together, reaches market together, and commands the best price. Maharashtra alone accounts for more than 70 percent of India's pomegranate area and most experienced farmers there practise bahar treatment as a standard practice.

The Three Bahar Seasons

There are three bahar seasons in pomegranate farming. Mrig Bahar has flowering in June to July with harvest from October to December. This is the most commonly practised bahar in India because flowering and early fruit development coincide with the monsoon when water is naturally available, reducing irrigation costs. Hasta Bahar has flowering in September to October with harvest from March to April. Fruits of Hasta Bahar have very attractive rind and dark-coloured arils and command high market prices due to limited supply in that season. Ambe Bahar has flowering in January to February with harvest from June to September. This bahar needs assured irrigation water during April and May and is popular in dry areas of western Maharashtra where it has been found more effective than Mrig Bahar.

Step by Step Method of Bahar Treatment

The process begins 2 months before the desired flowering time. Stop all irrigation completely. In sandy loam soil, withhold water for 40 to 45 days. In light sandy soil, withhold for 30 to 35 days. As water stress builds, leaves will start to wilt and fall. A leaf fall of 50 to 70 percent indicates the tree has entered the required rest state. After 40 to 45 days of withholding irrigation, do light pruning of the tree to remove dead wood, crossing branches, and thin out the canopy. Apply the recommended dose of fertilisers immediately after pruning. The National Horticulture Board recommends 600 to 700 grams of nitrogen, 200 to 250 grams of phosphorus, and 200 to 250 grams of potassium per tree per year. Apply the full dose at this stage. Then resume irrigation. Within 15 days the tree will produce vigorous new growth with flowers and developing fruits.

Use of Ethrel for Faster Defoliation

To speed up leaf fall after stopping irrigation, spray Ethrel at 2 to 2.5 ml per litre mixed with DAP at 5 grams per litre on the trees within 2 days of pruning. This chemical spray triggers faster and more uniform leaf fall achieving 80 to 85 percent defoliation quickly. After this defoliation, do a second light pruning of 15 to 25 centimetres to stimulate further new growth. This two-stage pruning and defoliation approach is now widely used by experienced pomegranate farmers in Maharashtra and Karnataka.

Which Bahar to Choose for Your Farm

The choice of bahar depends primarily on your water availability. If water is limited in summer, choose Mrig Bahar where irrigation is needed least as monsoon rains support flowering and early fruit development. If you have assured irrigation throughout the year, Hasta Bahar is worth considering for the premium prices it fetches. Ambe Bahar suits farmers in western Maharashtra with access to water in winter. Most experienced pomegranate farmers take only one bahar per year to avoid exhausting the tree. A well-rested tree that takes one good bahar consistently outperforms a tree that is pushed for multiple crops per year.

Bahar Treatment Should Start from Year Three

According to research on crop regulation in pomegranate, bahar treatment should only begin from the third year of the tree's life onwards. In the first two years the tree needs to establish its root system and canopy. Stressing a young tree too early through bahar treatment can permanently weaken it. From year three, start bahar treatment and by year four to five the tree should be giving full commercial yields of 60 to 80 fruits per plant per season when managed well.