Abstract
The effect of auxins (1AA, IBA), B vitamin (thiamine) and boric acid on rooting response of stem cuttings of Azadirachta indica in relation to different seasons was investigated. The cuttings collected from a tree showing complete leaf fall or bud breaking stage in the month of February developed significant adventitious roots and in remaining seasons the rooting percentage was very poor. The cambium of the neem may be dormant during October to December, 1000 ppm IBA is the best treatment which induces 80% rooting in February. The effect of auxins or vitamin on root stimulation may depend upon the physiological and cambial activity of the cuttings and it is seasonal.
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