"...there are a few areas where there is still a bit of concern. We still need to work on bowling, especially on wickets where there is no turn and spinners are not that much effective. If you don't take wickets in the middle overs and it really puts a lot of pressure on the bowlers," Dhoni said after India took a 2-0 lead in the five-match series here.
R Ashwin took 3-39 while Ravindra Jadeja, Suresh Raina and Ambati Rayudu took a wicket each to help India beat England by six wickets after the hosts collapsed from 82/0 to 227 all out.
"I was surprised by how much it turned. That really brought out spinners into the game," said Dhoni.
"I felt Suresh Raina's spell was crucial because Mohit Sharma got injured and we were not really sure whether he would come back and bowl the seven overs he had to bowl. So I had to get those seven overs from the part-timers. I am happy that Raina and Ambati Rayudu contributed more than the seven overs and there was less pressure on me."
India chased down the 228-run target with seven overs to spare. It was a good day in the field for Rayudu who not only picked his maiden ODI wicket when Dhoni stumped Alastair Cook but also scored 64 not at number four, in place of Ajinkya Rahane who opened the innings after Rohit Sharma's broken finger.
"We have to judge people under different scenarios and under pressure what they do, if they are supposed to play freely and how they do play," said Dhoni, talking about the different situations facing his batsmen.
"Overall it looks like a good team. If you look at the batting order itself, it is a fantastic one. If Rohit Sharma gets fit at the top of the order or if he is batting in the middle it is looking good."
India cannot lose this series now after the first ODI in Bristol was washed away. There are two more games remaining in the series, at Birmingham on September 2 and then at Leeds on September 5.
"It was a fantastic performance by the whole team. Apart from bowling, the fielding was brilliant too. Ian Bell's wicket at that point of time was very crucial and Raina's catch in the slips was fantastic. Those are the things really help you lift as a team," said Dhoni.