A field experiment was conducted during 2013-2014 to study the nutrients changes in the leaf of custard apple cv. Arka Sahan, under different pruning with defoliation treatments during off-season flowering. Nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, zinc, manganese, iron and cupper concentrations were monitored before treatment application and after treatments application. N, P, K, Mg, Zn, Mn and Cu in leaves of cv. Arka Sahan more in the treated trees than the control and before application of the treatments, and S more in before application of the treatments than the control and treated trees, but iron and calcium levels were more in the control trees than the before application and after application of the treatment. Such nutrients changes within the Arka Sahan leaves may have resulted in greater vegetative growth, flowering and fruiting, giving rise to off-season flowering with yield of 19.60 kg per plant in the treatment of 25 per cent pruning + orthophosphoric acid 1 per cent than the other treatments.