do the vikarana pratyayas that are added according to the dhatu ganas provide any different meanings?
if not , how to differentiate the meanings of two dhatus which are the same but from different ganas
ex. ऋ - गतौ of bhvaadi and ऋ-गतौ of juhotyadi
Vikarana pratyaya's do not have any specific meaning. It is just to derive the right verb forms. Based on 'सर्वेसर्वार्थकाः' with this, there are multiple meanings for each dhatu. You need to refer Kosha (dictionary) for meanings.