Pawar was addressing the 5th National Convention of his party at Atladara on the outskirts of the city.
The NCP chief said the chief minister was "disrespecting" people of Gujarat by raising baseless issues.
Union Heavy Industries Minister Praful Patel dubbed Modi as a "publicity stunt expert" and said the chief minister is claiming "undue" credit for development works in Gujarat.
Taking on Modi over his common refrain of Centre doing injustice to Gujarat and farmers given a raw deal, Pawar said, "We lifted the ban on export of cotton in the interest of farmers. 40 lakh bales of cotton were exported from Gujarat and we will continue to protect the interest of farmers in future as well".
The PMO had last week rubbished Modi's claim that Rs. 1,880 crore were spent on overseas visits of the UPA chairperson, saying it was "untrue and misleading". The PMO underlined that the government had spent no money on Gandhi's overseas visits or her medical treatment abroad or in India.
Tearing into Modi government over fake encounters, Pawar said, "the state government tried to justify the encounter killings saying those killed by police had come to eliminate the chief minister".
"Why should one buy bullets and kill the chief minister?, he asked.
"Some five-six IPS officers and about 20 policemen are behind the bars in the state over fake encounter cases which is unprecedented," the NCP chief added.