All-rounder Jadeja has failed in all three matches against big oppositions with scores reading 3, 2 and 13 against Pakistan, South Africa and West Indies respectively.
Asked if he is happy with Jadeja's application, Dhoni said, "No, I think he needs to improve. He needs to step up really because we have a lot of faith in him, but at the end of the day you can't really play with hope. What you want is actually performance on the field," Dhoni stated about his Chennai Super Kings teammate.
"He has that capability. You don't get three triple hundreds in India just because you know how to bat. He's definitely talented, but he needs to keep believing in himself. Every batsman is tested in a few areas. They will bowl short-pitched deliveries to him. He will have to find a way in which he can tackle it because every batsman tackles it in a different way. So he'll have to find a way, what he can really do."
The Indian skipper felt that there won't be much turn on offer for the spinners in New Zealand where they play the next two matches.
"We also have to keep in mind the slower rate because a lot of people dig into the stats. Someone told me whenever we have played with four fast bowlers, 90 percent of the time we lose and 100 percent of the time the captain gets banned," he said with a smile.