Custard apple (Annona squamosa L.) belongs to family annonaceae is a tropical and subtropical delicious fruits grown in Bahamas, Bermuda, Brazil, Egypt, Florida, Malaysia, Peru, Mexico, Philippines, India, Thailand, West Indies and America.The present investigation for studying the effect of Seed treatment using Gibberellic acid (GA3) and KNO3 on seed germination and growth of custard apple (Annona squamosa L.) cvs.Balanagar and Washington were conductedat Guru Kashi University, Talwandi Sabo,Punjab, India during 2021-2022. For present study fifteen different treatments of GA3 and KNO3 i.e. T0 to T14 was used on two different cultivars of custard apple.The result revealed that in custard apple cv. Balanagar and Washington at T14: GA3@ 1000 ppm + KNO3 2 % reported minimum numbers of days taken for first emergence of nodes (8.95 days, 10.44days). Whereas the maximum number of days taken for first emergence of nodes was recorded in T0: Control (24.64, 25.80 days) respectively. The maximum germination percentage was recorded in both cvs. Balanagar and Washington at T14 (78.76, 76.67 per cent) in both Balanagar and Washington respectively.The result revealed that the maximum survival percentage was recorded in both cvs. Balanagar and Washington at T14 (86.96, 84.93 per cent). The result revealed that the maximum plant height, number of leaves at 45 and 90 DAS was recorded with T14: GA3@ 1000 ppm + KNO3 2 % treatment. Therefore the use of GA3 and KNO3 as seed treatment should be recommended as it is showing significant positive results on growth parameters of custard apple crops.
